german gold mining machines

gold panning machines | automatic gold panning equipment high plains prospectors

Speed up your gold recovery using modern technology by using an automatic gold panning machine. Spiral wheels help you move more gold rich material so you can recover gold quicker. These gold panning machines come in a few different varieties. The most popular is a spiral wheel. This piece of gold prospecting equipment uses an A/C power source like a deep cycle 12V marine battery to process your classified gold bearing dirt. The wheel circulates and sloughs off lighter, non-gold bearing dirt and rocks and slowly spirals the heavier material towards the top and dumps it into a small cup located on the back side of the machine leaving you with gold and a small amount of heavier black sand. These spiral wheels can come with without a speed control. Speed control allows you to control the One of our most popular models is the Dessert Fox gold wheel. This spiral wheel can also be used in conjunction with the Mountain Goat Trommel to process a great deal of gold bearing material without having to classify.

Speed up your gold recovery using modern technology by using an automatic gold panning machine. Spiral wheels help you move more gold rich material so you can recover gold quicker. These gold panning machines come in a few different varieties. The most popular is a spiral wheel. This piece of gold prospecting equipment uses an A/C power source like a deep cycle 12V marine battery to process your classified gold bearing dirt. The wheel circulates and sloughs off lighter, non-gold bearing dirt and rocks and slowly spirals the heavier material towards the top and dumps it into a small cup located on the back side of the machine leaving you with gold and a small amount of heavier black sand. These spiral wheels can come with without a speed control. Speed control allows you to control the One of our most popular models is the Dessert Fox gold wheel. This spiral wheel can also be used in conjunction with the Mountain Goat Trommel to process a great deal of gold bearing material without having to classify.

jig concentrator, gold jigs, gold separators, mineral jig machines - jxsc

Jig concentrator is one of the important gravity separation equipment, which use the different gravity of the raw ore composition to separation materials. The bigger the density difference and the specific gravity difference of raw ore, the better the separation effect.

Capacity: 1-30 TPH Application: It Mainly uses for separation alluvial gold, tungsten, tin, diamond, tantalum-niobium ore, chrome ore, manganese ore, ilmenite, and some poor ore, such as fluorite, garnet, cinnabar, etc.

Our jig machine has one or two gear boxes. In general, the feed particle size is relatively fine such as 3-5mm, the machine with a gearbox is ok. Feed particle size larger, it uses two gearboxes. The feeding minerals can is wet and dry. But feeding the dry mineral, the separation effect will better.

Eccentric connecting rod jig (plunger jig and diaphragm type jig), non-plunger jig, Hydraulically-driven jig, movable sieve jig/buddle jig. At present, the main use of mining concentrators is diaphragm jig, and that of the coal industry is a non-plunger jig and movable sieve jig.

The diaphragm jig mainly used to separate coarse disseminated ore, and are used mostly in the tungsten, tin and other rare metal ore mines. The material should be screened before go into the jig machine, of which capable process particle size between 0.5mm - 16mm.

According to the beneficiability and quality of the raw ore, the jigging machine makes the mixture of ore particles with different specific gravity to be stratified according to specific gravity in the flow of vertically moving variable speed medium (water or air). The ore particles with small specific gravity are located in the upper layer, and the ore particles with large specific gravity are located in the lower layer.

The medium used for jigging is water or air. The use of water as a jigging medium is called hydraulic jigging; the use of air as a jigging medium is called wind jigging. Hydraulic jigs are more commonly used, and wind jigs are used only in dry areas where water is scarce.

1. Firstly, take a detailed investigation into the particle size range and the dissociation of target mineral monomers. The heavy sand with high content may increase the difficulty of jigging separation. It is difficult to separate the heavy sand with the size smaller than the screen hole in the next step. On the contrary, the heavy sand with the size larger than the screen hole will settle down in the layer, when there is more and heavier sand, the jigger can work effectively only when the sand and target minerals are removed from the bed by stopping the machine. 2. As for the muddy material, it is necessary to carry out desliming and classification processes before the material enters the jig machine. How to design the complete mineral processing plant? JXSC engineer team respond detailed online. 3. Under the condition of a large jig room, a small stroke, and insufficient water drum power, the gold mineral jig is losing the normal working function because of the piling up layer bed. 4. Make sure that the required pressure and sufficient amount of water are added to the Jig, especially in the dry season. In addition, the silt content in the water should be reduced as much as possible. The constant pressure water tank, which can not only effectively settle the silt, but also remove the silt conveniently, should be used especially for the dredging operation in the upstream of the river. 5. Pay attention to the selection and determination of artificial bed stone particle size, density and other characteristics.

Mining Equipment Manufacturers, Our Main Products: Gold Trommel, Gold Wash Plant, Dense Media Separation System, CIP, CIL, Ball Mill, Trommel Scrubber, Shaker Table, Jig Concentrator, Spiral Separator, Slurry Pump, Trommel Screen.

gold smelter, electric gold and silver smelter kit for sale - superbmelt

Do you want to know all the essential information about the processes required to produce a piece of pure and usable gold? It is indeed a complete introduction of gold. These processes include how to melt down gold, smelting, refining, and casting.

Efforts are made to describe these gold-making processes as simple as possible. You will learn about the right skill/knowledge and machines needed to undertake smooth gold manufacturing, including some new machines like electric gold smelter. And you will also learn how to apply these technologies successfully in different conditions. Gold-making machines are available wherever there are some silver and gold smelters for sale.

If you are a mine owner, goldsmith, or gold storeowner, you can increase your skills about gold refining by reading it. There are some new gold-making technologies or machines you will discover while reading this book. And if you are just a gold user, you will see how many important procedures went into producing that special gold of yours. In this case, you will be careful about protecting your valued possession.

To gain practical ideas from this book, read it carefully and slowly. Pay attention to every detail described in it. You may have known some of these gold-making procedures, but there are still some concepts that may be new to you. So, go through every procedure or process thoughtfully so that you can find this book to be very useful.

Gold is a special earth metal valued for its shining and long-lasting properties. It can be obtained from its ores, amalgams, or as dispersed, single gold particles. If you have got your gold in its ores or amalgams, you will need to go through some essential steps to refine it, all of which are described in this book. And they include: Gold melting, smelting, refining, and casting.

The market value of gold has increased exponentially since 30 B.C. when the price of a pound of gold was set at 45 coins (meaning, a pound of gold can make only 45 coins) to 1351 when the United Kingdom set the spot price of an ounce of gold at 1.34. Since then, the price of gold has increased sharply. Today, in 2018, the spot price of an ounce of gold is $1,335 (although this price fluctuates widely based on the demand and supply for gold). As of today, the market value of gold worldwide is estimated to worth $8.14 trillion. This value is for all gold above the ground (already mined gold).

It is impossible to estimate the amount of gold that have not been mined yet (still under the ground), but it is likely that the worth/value of gold will continue to increase over the years. The incomparable value of gold prompts people to always inquire: Where is gold formed?

Since gold is a naturally existing earth metal, it can be found anywhere in the world. However, the amount/deposit of gold varies from one source or location to another. The charts below reveal the source, location, and state distribution of gold. It answers the questions people normally ask: Where is gold found in nature or where can gold be found?

Indonesia remains the state/nation with the largest deposits of gold, followed by South Africa. However, the chart below shows the countries with the largest gold-mining and gold-production activities.

China maintains the lead in gold-mining and production activities worldwide, closely followed by Australia. This may be due to Chinas increased manufacturing output which requires continuous supply of gold for several products such as objects that are platted in gold. These may include brand products like bags, eyeglasses, pens, cups, and other valuables.

Anyone who can afford it can buy gold, but the next important thing to worry about is where to store them. As a very expensive possession, people are usually advised against storing their gold at home if they worth a lot of money. So, you must look for a safe place to put your gold. We are not referring to your gold necklace, a gold-platted eyeglasses or coffee cup, or your small bar of gold that can be safely kept at home.

Please note: Your gold may lose some of its value if you store it at home. Because you need to take it to the gold dealer to make it liquid again after taking it off the gold market for a long time. In certain circumstances, you may be asked to refine it again before it can be re-admitted into the gold market. However, your gold bullion will still retain most of its value if you have kept it with a bank or a depository. In principle, your gold may have higher value if you have decided to use the service of a depository and agree to the fact that your gold should be considered as part of the private firms assets. In that case, your gold remains active in the gold circulation.

If you are having a beautiful gold necklace or bracelet and wondering how in the world this beautiful treasure was produced from a dirty piece of gold obtained from the soil, you definitely need to read this self-explanatory part/section of this book.

Some impure amount of gold can be obtained from its ores, mined directly from beneath the soil/ground. In order to get the purest form of the gold used in making your necklace or bracelet, it is essential that the impure gold be subjected to a melting process, which happens to be the very first stage in gold production.

There are traditional and modern methods for melting gold, either of the methods aims at producing gold in its purest form that can be commercialized and used in making shining jewelries, trinkets, wristwatches straps, gold utensils, and other valuable gold possessions.

After you have carefully completed the initial step of melting your gold, the next stage is gold smelting. Gold smelting is defined as the process through which impurities are practically removed from the gold. This can be accomplished by using heat, pressure, and some chemicals. The goal is to obtain gold without any trace of impurities once the smelting process has been completed. There are some important procedures or steps required if you want to get a shining piece of gold from its ores.

After melting and smelting, it is still necessary to put the gold through the process of refining so as to make sure that no small piece of impurities remains in the already purified gold. It is at this point that some gold-cleaning chemicals are utilized. Chemical substances such as borax and soda ash are very useful for purifying gold. They are usually added to the molten metal (gold) while it is still hot; this helps to separate the pure gold from other metals that could precious or less precious metals.

Gold purity is measured in Karatage, which reveals how much pure gold is present in a particular object when compared with another alloy. As a matter of fact, an object, say your necklace, with a high Karatage indicates that it consists a large amount or proportion of gold. Whether you are using gold to beautify your body or holding it as a valuable asset, the primary concept is that it is of the highest quality to be considered worthwhile in the market. The higher the Karatage the more value your gold possesses.

Gold casting is the last stage in gold production. It simply refers to the process of creating desirable designs or shapes using the purified gold. All you need to do is to pour the melted or smelted gold (molten) into an already prepared wax carving. This is referred to as the lost-wax processthis process, which is also called cire-perdue method for casting gold, involves pouring a molten metal (gold) into a mold made from a wax model. And once you have completed the gold mold, the wax model is melted and subsequently drained away.

Let assume you want to cast a gold Buddha, all you have to do is to cast a Buddha image using a wax and then pour molten gold into it. The Buddha mold will be carved in the wax so that after the gold cools down, the gold Buddha can easily come out of the melted wax.

As a goldsmith or gold shop owner, the practical steps highlighted in this book are very useful for you. Efforts are also made to simply describe the appropriate machines you will need to accomplish all the gold production processes.

Your shining gold necklace, ring or bracelet does not just emerge from nowhere: it came all the way from the dirty soil/ground! It is also believed that gold nuggets or fine grains of gold can be found in rock cracks or on other material hosts. Naturally, gold is said to be a by-product of a collision between the meteorites and earth. This is the reason some fine flakes of gold can be found on the ground in areas that have recently experienced a meteorite collision, which is a very rare occasion.

However, large deposits of gold occur as gold ores in the soil by mixing with other substances such as calaverite, petzite, sylvanite, krennerite, or nagyagite. Gold can also be found as an alloy of silver and mercury.

NOTE: All the gold-mining techniques highlighted above have been applied since centuries ago, but modern method such as gold smelting has replaced some of these traditional practices. Gold smelting makes it possible to obtain gold or gold particles in higher purity degree when compared with these traditional processes. While the procedures explained above utilize little or no heat or pressure, gold smelting process applies heat from the furnace. It is believed that gold smelting produces gold with the least amount of impurities, unlike the traditional methods. And you need some specialized gold-smelting machines to carry out your gold-mining operations.

Why do we need to refine gold? The answer is very simple: We cannot use gold in its raw form. Gold must be refined from its alloys or amalgam forms in order to get the pure gold that you can use in whichever way you like. Several people think that their gold pieces are pure. That may not be true, because an alloy of gold and copper still have a brilliant shining color, but it lacks other chemical properties of gold.

Generally, gold can be refined using these two-best-known gold-refining procedures: Aqua Regia and gold electrolysis. These two techniques can be used to separate gold from other metals. This is because a little piece of other metals in gold can change its properties and value.

This is an effective gold-refining process that requires the use of a chemical solution (flux) known as Aqua Regia. The purpose of this method is to dissolve any other metals that may attach to gold in its ores or alloys. This process can be done small-scale and it is practically affordable because a 500ml of Aqua Regia kit costs about $63.95. Aqua Regia comprises of nitric acid and hydrochloric acid in the ratio 1:3. Its density is 1.01-1.21 g/cm3. It is soluble in water, and its boiling point is -42oC. Its hazardous level is expressed to be NFPA 704, which helps users to identify how dangerous the chemical is and what equipment or materials can be used alongside this chemical.

Aqua Regia has been used to separate gold from other metals for a long time. It is a kind of gold smelting flux like Borax, which is another chemical substance used in gold purification. Aqua Regia originates from a Latin word that means royal water. Actually, Aqua Regia is a chemical solution which fumes, and it is corrosive in nature. It is either yellow or red in color. You can freshly prepared Aqua Regia by mixing concentrated hydrochloric acid with concentrated nitric acid.Aqua Regia gets its royal name from its ability to dissolve some noble metals such as gold and platinum. The diagram below explains the Aqua Regia gold refining process:

Step five: The dropping (sedimentation) of gold from the other metals happens in this step. And this step is completed by treating the solution with a reducing agent such as SO2, sodium metabisulfite, or other reactants. If you are using either SO2 or sodium metabisulfite (SMBS), the gold will not be reduced until the excess or all nitric has been eliminated.It is also possible to remove nitric by adding urea to it.

Aqua Regia is a well-known process for obtaining gold in its pure form. And the chemical reactions involved in this procedure are simple and straightforward. The chemicals are available everywhere and not too expensive.

However, the main disadvantage of this procedure is that permissions from the local authorities may be needed. This is because some of the chemical reactions may produce by-products that could have some destructive effects on the environment. This include toxic fumes and chemical by-products that may not be good for human health.

Gold electrolysis is the second, popularly used method in gold-making industries to separate gold from the other metals. This procedure has been noted to produce gold that is almost 99.999% pure. It involves setting up an electrolytic equipment, which consists of two separate nodes/poles known as anode and cathode.

This procedure is particularly great for extracting gold from its low-yield oresthat is, ores that contain very small amount of gold. For this arrangement, Chlorine is mainly used as the solubilizing agent for the separation of gold or other precious metals from their ores.

Gold electrolysis was invented by Emil Wholwill in 1874. But various versions of this process have been developed over the years. It is an electrochemical process which has been applied in many large-scale gold-refining establishments or industries.

The principle of gold electrolysis is very straightforward or simple: Dore bar, which is a cast gold ingot at 95% plus purity is used as the anode. The cathode (s) for this electrochemical procedure are small sheets of 24 Karat (pure) gold sheeting. When current is applied to the system, the electricity moves through hydrochloric acid, which is the electrolyte for this process. Then gold and other metals are deposited at the anode during the electrolysis, but the pure gold that has passed through chloroauric acid by ion transfer is deposited or plated on the cathodes.

Mostly, the gold obtained through gold electrolysis is usually very pure, almost 99.999%. In fact, this procedure is the best method for processing gold with the highest karatage (24 Karats = 100 percent gold). This is why gold electrolysis is very common in countries where pure gold pieces are given priority over the ones with low karatage.

However, it is a very expensive procedure because a permanent stock of gold is required to run the electrolytic process. Take for instance, for every gold produced through this method, 20% of it is lost on the anode.

In other words, if you aim at producing 100kg of gold, you should make provisions for 120kg, because at the end of the process, 20kg will be plated or wasted on the anode, leaving you with only 80kg of gold (in case you have not previously made any plans for the loss of gold on the anode).

There are different types of furnaces based on the kind of metal they melt, how they work, and the size of the gold-smelting operation they are used for. Provided below are some examples of gold smelting furnace:

NOTE: Induction furnace technology also has the same advantages; it doesnt produce much noise, air pollution, and any harmful by-products. It consumes very low power and has higher melting efficiency. And it does not have harmful effects on gold workers.

Some of the gold-mining processes discussed in this chapter have been phased out because of the fact that they are no longer applicable or useful in gold mining operations nowadays. Here are some of the factors that can affect modern-day gold mining:

As a result of this, some gold-mining companies have programs aimed at undertaking social and cultural transformations in their communities. They send their employees on numerous trainings so as to learn how to add value to their services and products as well as educating their customers about how to perfectly use those services and products. Some of the employees can also be trained to become social workers or educators who will impact new ideas to the people in their communities.

The history of gold digging/gold mining is a long one, spanning several centuries. Before it becomes a worldwide commercial activity, gold mining was carried out by a person or a group of people. Personal gold mining was possible because gold, as a metal, appeared naturally as a brightly shining substance. It was easy for a person to see its beauty and desire to coat his/her valuables with it.

The earliest origin of gold digging/mining can be traced to the ancient Egypt where people mined gold to cover several of their materials/possessions such as jewelry, masks, figurines, beads, cups, buttons, as well as their tombs.

However, gold was later discovered in other places around the globe such as in the Middle East, Saudi Arabia, South Africa, China, Australia, and even in the United States. Geologists believe that there are still some undiscovered gold deposits around the world, and it might take years before we can discover them.

As gold continues to be a valuable metal that everyone aspires to have, how long does it take to melt gold? This may speed up the process of searching around (prospecting) for gold deposits in every corner of the world.

The gold smelting process is a simple but essential procedure in extracting gold from its raw ore. It involves more than just heating, pressurizing, or melting the gold into a bar; it also removes impurities from the gold before it is passed on for further refining. To successfully carry out gold smelting, some specialized equipment or machines are required. You will need a furnace, some chemicals, a source of heat, and molds.

The essence of treating gold ore and its components with heating and chemicals is to make sure that only the purest form of gold is left after the process. Then you can heat and pour the purified gold into mold to obtain pure ingots. Ingots are of different shapes and sizes.

It is important to stress that the effectiveness of this process depends on the type of gold smelting furnace you are using. However, do not forget to smelt gold in a well-ventilated area. This is because some of the impurities like sulfur can produce pungent smell.

Some gold-smelting equipment are required to smoothly undertake the gold smelting process. Since heat and pressure are required in the smelting operation, a good furnace is required. Outlined below are some high-performing furnaces and relative information about their technologies:

Generally, when you recycle something, you give it a new shape or form. The same thing is applicable to gold. So, gold recycling means making a piece of gold pass through the known processes of melting, smelting, refining, and casting. Like a silver smelter, there are different kinds of machines that are used in the gold smelting process. What matters is the end-product, which is a piece of pure gold.

Gold melting requires a series of procedures, some of which are typically traditional in nature. There are also new, modern techniques for melting gold. Highlighted below are four strategic methods for melting gold:

The principle behind this method is that when heat is applied to gold material, it will melt at its natural melting method of 1,200. A propane torch is capable of melting gold within minutes. But since fire is involved, you have to be extra careful during this process.

Using a propane torch to melt gold is a simple, straightforward procedure: Place the gold to be melted in a crucible. Place the crucible and the gold in it on a fireproof surface. Bring the propane torch to the crucible and focus the flame on the gold to melt it.

If you want the gold to melt at low temperature, you should first treat the gold with Borax before melting it. Dont forget to heat the gold slowly if you are using gold powder, or else you will blow it all away. And do not apply too much heat to the crucible because it can crack in the process. The goal is to melt the gold uniformly and perfectly.

Once your gold has been finely melted, the next step is to mold it into your desired shape. Choose your desired mold shape and pour the molten gold into it while it is still hot. It is advisable that your mold is made of the same material as the crucible. This will prevent unnecessary stickiness when molding the gold into your chosen shape.

Note: You may experience that the gold pieces melt at different temperatures even though they are the same metal. The main reason for this difference in melting temperature is that they have different states of purity.

The principle of induction-melting of gold is based on the fact that gold material can be protected in a good environment, saved from oxidation, and proactively refined through this approach. And this is one of the effective ways to melt gold, whether on a small or industrial scale is to use induction gold melting furnace. The features, working principle, and the usefulness of an induction gold melting furnace are clearly described below:

The basic function of an induction melting furnace is to melt multi-metal. This gold smelting furnace is an electrical one that utilizes high degree of power or electricity to melt metals into a molten form. It can be used to melt metals that are less than a kilogram and those that are hundreds of tons. You can utilize this furnace to melt precious metals such as steel, copper, iron, and aluminum. When compared with the regular heating furnace, induction melting furnace outperforms it due to its efficiency and wide application in melting different amounts of iron scrap.

Because of the points highlighted above, the cupolas in the ordinary furnace are now replaced by induction furnaces due to its ability to melt iron without producing harmful pollutants. And the loss of valuable alloying elements has been prevented or completely reduced.

To better utilize your induction melting furnace as a part of your gold smelting kit, you need to understand how it works. It functions on the principle that a high electrical voltage originating from a primary coil/source leads to the induction of a low voltage and high current in the secondary coil/metal. This is why induction furnace is regarded as the best approach for melting different types of metals and for producing their alloys with little or no metal losses. This machine utilizes IGBT induction technology, and the induction power rates from 3.5KW to 16KW.

However, the drawback about the resistance furnace is that it is time-consuming when compared with the induction melting furnace. You will discover that resistance furnace is sealed; this feature makes it possible for it to stop heat from escaping into the atmosphere. And its temperature-controlling system is automated, which means that it functions perfectly on its own.

One of the great points of the resistance furnace is that it has a gaseous medium that makes it possible for it to prevent oxidation and hardening of whatever gold sample one may be working on. This kind of furnace is predominantly useful for small and medium-sized gold-mining operations, but it is too small for a large-scale or industrial gold miningit cannot be used for large quantities of gold.

On a small scale, you can use a 1,200-W microwave oven to melt your good pieces, particles, or powder. Choose a microwave oven that has no magnetron on top of it, but on its side or back. You will need a gold melting kiln or kit that would be placed in the microwave oven. Put the gold particles, powder, or pieces that you will like to melt in the kiln or kit. It is quite advisable to cover the kiln so that some particles do not sputter out and cause fumes to emanate from the microwave oven. If you can, fix a shelf in the microwave oven inside which you are going to place the kiln. Start heating the gold to the temperature up to 1,200 Watt. As the gold reaches it melting point, pour the molten gold into the already prepared mold to get your desired shape or cast.This microwave oven has already been contaminated with some gold particles and it would be risky to use it to cook food or other things that you will like to eat.

It is very important that you should know the differences and similarities among the four types of furnaces described above. This knowledge will help you make a wise decision/choice when you want to purchase your gold-melting furnace.

To most people, the terms gold melting and gold smelting appear to be the same but sometimes confusing. However, even though they are both essential metallurgical procedures required to recover gold in its purest form, they are different in operations. The table below reveals the sharp contrast between gold melting and gold smelting.

The term gold-melting flux refers to a chemical solution used in purifying gold. This solution may be added immediately after smelting or melting. It can also be added during gold-refining operation. The importance of a gold-melting flux is to make sure the impurities in a gold bar is completely dissolved. This makes it easy for the impurities to be removed without any difficulty.

The best approach to choosing the right furnace for your gold-melting process is to first identify the comparative qualities of the different types of furnaces in the market. This section looks critically at the important factors every gold-melting expert must take into consideration while shopping for the most appropriate furnace.

Sometimes you may have some pieces of gold you will like to melt at home, instead of taking them to a gold dealers shop or goldsmith. There are 2 simple gold-melting processes that can teach you how to melt down gold:

To obtain the best result in your gold-melting process using a stove, it is important that you utilize a good one. Outlined below are some qualities you should focus on while selecting the most appropriate stove for your gold-refining operations:

It is a small furnace with a crucible/kiln in it and a stand. The furnace is covered so that the melted gold particles will not jump out of the crucible/kiln. It is usually heated using the electric power.

However, this kind of furnace poses a great danger to workers as well as to the environment. This is because precious metals are easily oxidized during the melting process, and heat, noise, smokes, and other hazardous materials are released to the atmosphere. The good thing about this furnace is that it maintains a constant amount of heat to the precious metal being melted, but the employees/workers at the Foundry must wear heat-resistant coat to prevent their bodies from being burnt or scorched.

The best advice for anyone looking to purchase a gold-melting furnace is to select the one that is very easy to install. If not, you will have to pay a lot for re-installing every time the furnace is dismantled for cleaning and maintenance.

Your gold-melting furnace supplier or manufacturer will not be always at your side to offer help in routine dismantling and assembling of your furnace. You or your employee must understand how to do this so that you can save on hiring external consultants to do it for you during routine maintenance of the furnace.

For all SuperbMelt products, the installation procedures are very simple: The machines will be debugged before shipment, tested well, and used to complete a gold-melting work. After these processes, the machine can be used directly on site.

And what is gold used for? This brings us to gold casting, which is the final step or process in gold-making. After refining your gold, all you want to do is to cast it in the appropriate form or shape that you desired. Today, there are different items platted or covered with gold, from necklace to bracelet. And some gold objects are shaped or cast as keyholders, Buddha, or even plates or cups.

So, gold casting is the process of obtaining the right shape or form that you are proud of or happy to have. Gold casting is a delicate process because you want to have a perfect shape/form: So, you will need to have the most appropriate equipment to carry out this process.

Gold purity is measured in Karatage: A 24 Karats (24K) gold has one hundred percent purity (100% pure gold), while an 8 Karats (8K) gold has only 33.75 percent purity (33.75% pure gold). The higher the Karatage number, the more valuable the gold is, and the higher its cost price.

The mathematical calculations above are only useful for determining the exact amount/quantity of pure (fine) gold to be added to the original karat, the main Karat manufacturing involves the use of two important machines/equipment: Vacuum granulating machine and vacuum induction furnace.

A general granulator is employed in producing master grains and alloy grains for all kinds of metals (gold inclusive), using the molten raw material obtained from induction-heated furnace. This is poured into a water tank which goes through a multi-hollow crucible that functions as a flow-breaker.

industrial mining equipment & machinery | general kinematics

GKs core strengths rest in our ability to create energy efficient, high-quality vibratory mining equipment to solve the toughest of process problems. Our proven track record as mining equipment manufacturers & suppliers can be found in our extensive vibratory installation base of over 40,000 units in 35 countries. GK stands behind all our vibrating mining equipment, with unmatched after-sales service and support throughout our global network.

Along with drill rigs, blasting tools, and earth movers, the industry looks to feeders, screeners, and grinding mills. When mined materials are moved from the mine or quarry to the surface, sorting area, or factory, feeders keep the process running smoothly by moving the elements in the correct flow rate, to the correct place. Along with feeders, screeners take on a substantial load by filtering out the wanted substances from the unwanted. For example, a vibratory screener may allow for particles of dirt, rocks, and dust to fall away, leaving the valuable material moving towards its destination. Grinders also help to remove excess material for easier collection of goods. This is often done through crushing, grinding, or breaking down larger chunks of material to extract the desired product.

The mining industry has made great strides in extracting deposits and removing the desired material from waste. Mining machines are now more efficient because updated technology saves energy and reduces the number of harmful chemicals needed to extract desired material from its surroundings. Heavy duty, weather-resistant equipment is still necessary to extract, transport, and process minerals, ores, coal, and precious metals from soil, sand, and rock.

GK equipment properly activates and regulates the flow of material and can easily be integrated throughout your process line. Innovative mining equipment from GK is more compact and able to process material efficiently, increasing a mining companys ability to invest in superior machinery without breaking the budget. Improvements have also been made in the automation of this ground-breaking mining equipment, making it easier to monitor and maintain more machines while reducing overall man hours.

GK has products that are crucial to the mining industry. Our focused detail to every facet of our machinery is emphasized throughout the world. Known for their dependability, longevity, and expert performance, you are sure to have a product of the highest quality to boost your goals.

bitcoin mining machine shortage worsens as bitmain sells out through august - coindesk

Even though leading bitcoin mining manufacturer Bitmain doubled prices to capitalize on overwhelming demand resulting from the surge in the price of bitcoin, it still pre-sold three months of inventory in a few weeks.

In early December, Bitmain was pre-selling bitcoin ASIC miners with an expected shipping date of May 2021, per CoinDesks prior reporting. Less than a month later, Bitmain has sold out through August 2021 and has raised its prices significantly.

Bitmains prices have gone up, said Kevin Zhang, vice president of business development for New York-based mining company Foundry, noting that demand for new ASICs shows no sign of abating soon. But there also has been very limited extra allocation for May though July next year for S19s and S19 Pro models.

With miners eager to buy any available machines, secondary mining markets continue to benefit from primary manufacturers low inventory, with activity surging to its highest levels since 2017. Prices for more efficient, second-hand models have climbed to 12-month highs, per Luxor Technologies market data.

Secondary markets are also booming, said Amanda Fabiano, head of mining at Galaxy Digital. S9s that were being sold in May 2019 for $20 are now being sold at $130 on some channels, she told CoinDesk in an email.

The surge in mining activity comes as bitcoin ended 2020 with a more than 300% gain, currently trading just below $31,000. Miner revenue has also soared, with the dollar amount earned per terahash per second (TH/s) reaching $0.25 Sunday, its highest level since August 2019, per data from Luxor.

Fabiano described the current mining machine market conditions as a perfect storm for supply constraints: limited capacity at the foundries, larger facilities buying up supply and companies with strong balance sheets entering the market with the ability to place massive orders.

Those massive orders are coming from mining firms like Riot Blockchain (RIOT), which bought over 31,000 new machines this year; Core Scientific, which bought 59,000 machines from Bitmain in one order, and Marathon Patent Group (MARA) which expanded its mining fleet to over 100,000 machines.

The leader in news and information on cryptocurrency, digital assets and the future of money, CoinDesk is a media outlet that strives for the highest journalistic standards and abides by a strict set of editorial policies. CoinDesk is an independent operating subsidiary of Digital Currency Group, which invests in cryptocurrencies and blockchain startups.

24 digging machines that created a world beneath our feet

Engineers have done some pretty remarkable things in the past 200 years. But some of the most exciting have taken place entirely underground. From the digging of the NYC subway system to the Yucca Mountain tunnels, these machines are responsible for boring entire worlds below our feet.

Linking cities with subterranean tunnels? Mining minerals thousands of feet below the Earth? No problemengineers have spent more than two centuries designing and building monstrous machines for purposes that, fairly recently, sounded like science fiction. we can create monstrous machines for any digging purpose you want!

worlds top bitcoin mining-rig maker halts sales as clients flee

(Bloomberg) -- Bitmain Technologies Ltd. has suspended sales of machines for spot delivery globally, aiming to prop up local prices after crypto miners fleeing Beijings crackdown dumped used mining rigs on the market.

The worlds biggest maker of Bitcoin machines told the local mining community Wednesday it has stopped selling new equipment after prices for top-tier rigs plunged by about 75% since April. By postponing sales, it could help miners exiting the industry get better prices for their machines. Bitmain could also benefit if the reduced supply buoys prices over the longer term for new machines.

The firm said it will continue to sell gear for future delivery of devices used to mine smaller altcoins. A company spokesman confirmed the decision, which was reported earlier by local blogs, without saying when business will resume.

In May, Chinas State Council -- its cabinet -- called for a renewed crackdown on Bitcoin trading and mining activities. Local governments in places from northern Inner Mongolia to hydro-rich Sichuan acted quickly to sever power for mining facilities. The unprecedented crackdown is spurring more and more major miners to uproot or abandon their operations, a growing exodus thats rocking cryptocurrencies globally while flooding the domestic market with cheap machines. The Bitcoin networks computer power has suffered a plunge in recent weeks amid the disruption.

On the second-hand market, top-tier mining machines developed by companies including Bitmain and rival Whatsminer are now sold at around 150 yuan ($23) per THash/second -- the reference unit for their computing power -- down from 600 yuan in April when Bitcoin hit an all-time high of $64,870, according to Arthur Li, founder of Bitmain-backed mining startup Sai Technology.Last week, Bitmain hosted a closed-door event with hundreds of miner clients at a Chengdu Hotel. The firm pledged to serve as a matchmaker to help miners hook up with data centers in countries like the U.S. and Kazakhstan.

The good news: That pension and your savings are and will be great assets for you in retirement, so congratulations on that! There are many factors that go into knowing how much youll need for retirement, and a few ways to break down these annual estimates. For example, if you were to use the 4% rule, which is a traditional rule of thumb that suggests you take out 4% of your retirement savings every year to live on, youd generate about $30,000 to $35,000 a year, said Morgan Hill, chief executive officer of Hill and Hill Financial.

Shares of Novavax (NASDAQ: NVAX) dropped 12.7% this week as of the market close on Thursday. The primary reason behind this decline appears to be increasing concerns about the rise of coronavirus variants, especially the highly contagious delta variant. This lack of information about the efficacy of Novavax's vaccine against the delta variant seems to be troubling investors to some extent.

"This is speculative but I think you stick with it," responded Jim Cramer. According to the company's website they do "research and product development of pharmaceuticals and biologic agents for the prevention and treatment of human neurological and neurodegenerative disorders, pain and cancer." In the daily bar chart of AVXL, below, we can see that the shares made a base in the second half of 2020 and then started a strong advance in late January and early February.

Job openings are at a record high and most companies are trying to hire, but they can't find enough workers even though millions of people are still unemployed. Why aren't they looking for work? When do they plan to find a job?

Interest rates have dropped to near zero, bond yields have fallen substantially from pre-COVID levels, and a number of traditional dividend paying stocks cut or postponed payments due to the pandemic. This compounding effect, combined with rising inflation, has created an environment that has seen real yields (nominal interest rate minus inflation) at their lowest level since the 1970s, as measured by the U.S. 10 Year Treasury bond. The current inflationary environment is, to put it mildly, less than ideal for yield-focused investors especially retirees.

(Bloomberg) -- The official autopsy of the great Texas winter blackout of February 2021 quickly established a clear timeline of events: Electric utilities cut off power to customers and distributors as well as natural gas producers, which in turn triggered a negative feedback loop that sunk the state deeper and deeper into frigid darkness.Its now becoming clear that while millions of Texans endured days of power cuts, the states gas producers contributed to fuel shortages, allowing pipelines a

Shares of Illumina (NASDAQ: ILMN) gained 17% last month, according to S&P Global Market Intelligence. The stock climbed steadily throughout the month after its Grail spinoff presented impressive data from its liquid-biopsy test at the American Society of Clinical Oncology (ASCO) meeting. Other companies like Guardant Health and Freenome are also working on liquid biopsies.

KUALA LUMPUR (Reuters) -Malaysia's government and state fund 1Malaysia Development Berhad (1MDB) are seeking over $5.6 billion in damages from KPMG partners for alleged breaches and negligence linked to a corruption scandal at the fund, court documents seen by Reuters showed. Audit firm KPMG on Friday denied the allegations and pledged to "vigorously" contest the suit filed against 44 current and former partners and linked to its audit of 1MDB's financial statements between 2010 to 2012.

With the ebbs and flows of global markets, industries are born, mature, and sometimes fade away into the abyss of irrelevance. In recent years, we have seen crypto-mining, electric vehicles, and now the cannabis industry taking off. Although already legal in 36 states, the substance is still federally illicit, placing the publicly traded companies dealing with it in a precarious, yet potentially prosperous position. Once full legalization is reached in the U.S., most any company which handles ca

(Bloomberg) -- Chinese regulators rejected Huya Inc.s proposal to acquire rival DouYu International Holdings Ltd., killing a deal that would have helped cement Tencent Holdings Ltd.s lead in video game-streaming.The deal wasnt approved because it would strengthen Tencents dominance in Chinas game streaming market, giving it an anti-competitive edge, the State Administration for Market Regulation said in a statement on Saturday. Huya and DouYu together have more than 80% of the market based

Oil futures end sharply higher Friday, extending a bounce from the previous session triggered by a sharp fall in U.S. crude and gasoline inventories, but fail to erase a weekly loss as a spat over OPEC production levels remains unresolved.

mining 101: ultimate list of gold mining equipment - precious metal info

Found in Bulgaria are some of the oldest gold artifacts known to mankind, in the Varna Necropolis, a collection of graves built between 4700 and 4200 BC. This finding, dating back nearly 7000 years, provides evidence of the first civilization to use gold mining equipment. Some archeologists claim the Sakdrisi site in southern Georgia, which dates to roughly 4000 BC, is the worlds first gold mine.

In the 19th century, gold rushes occurred around the globe and people migrated to different regions hoping to strike it rich. The Victorian Gold Rush took place in Victoria, Australia, between 1851 and the late 1860s, and the Second Boer War took place in South Africa between 1899 and 1902. In America, the famous California Gold Rush took place in 1949, and discovery of Nevada's Carlin Trend,North America's largest gold depository,took placein 1961.

Since the beginning of civilization, humans have mined around 6 billions troy ounces of gold. Today, 2.5 percent of all gold production happens in Nevada, making it one of the primary regions on earth. As of 2017, China produced the most gold per year at 429 metric tons, followed by Australia, and then Russia. However, there's still a lot of gold out there, and you can join in the gold mining industry by investing in basic gold mining equipment.

There are two basic steps to gold mining: prospecting and production. "Prospecting" refers to the actual search in a certain area for valuable minerals, and "production," also known as mining, is the physical act of removing the gold from where you found it. Since different equipment exists for prospecting and mining, this article explores, briefly, equipment used for prospecting, and then focuses, primarily, on gold mining equipment.

How do you find gold? In the gold mining industry, theres a lot of value in learning from others who have gone before you. No one ever gets all the gold out of any one location. So, try going to where gold exists in abundance. Consider this: the California Gold Rush only removed a small percentage of the gold thats out there. That's right.

There are areas in California that are still open to recreational prospecting, including the Auburn State Recreation Area and the South Yuba Recreation lands. Once you get your feet wet in an area proven to have gold, you can move on to other areas closer to home. After mastering prospecting and gold-mining techniques, you might even want to look for gold in your own back yard.

Some people say, Gold is where you find it. What this means is you have to learn what to look for. First, understand that the way water moves in rivers and streams determines where gold deposits might settle. Next, you need to learn why gold concentrates in certain areas, and then search those areas.

Once youve selected a specific waterway for mining, youll want to pick specific points to search. Since it is impractical to search the entire stream or river, there are ways to read a waterway to determine the most likely places to find gold. The following describes how to find those places.

The first thing to know is gold is heavy. Its about 19 times heavier than the same amount of water and 6 times heavier than solid material found in streams and rivers. So, anything that slows the movement of water is likely to trap gold deposits. Things that slow down moving water are:

Water on the downriver side of obstacles will move slower, and this is where heavier gold will settle. When looking at a chosen waterway, begin by searching for natural dams where gold may have collected. Another place that collects heavier objects in a waterway is inside bends, places where water naturally slows down. Heavy objects will often form a bar at these points, and the upside of a bar inside bends is a great place to look for gold.

Once gold has settled in a stream, over time, it works its way down layers of soil and settles in bedrock. A great location for gold is in the material coating bedrock under a stream. Choose a location on the inside a bend where there is an obstruction and then dig to the bedrock. Sifting the soil coating bedrock, usually, will produce gold.

Learn to delay the excitement of seeing gold for the first time and you will have more gold-filled dirt to take home with you. Once you get better at choosing locations, and especially if you find a proven location, its best to spend your time digging and removing dirt, rather than sifting and cleaning it on site. Delay celebrating and get as much dirt as possible to take home. Once you get home, sift and clean the gold youve found.

Another great place to look for gold is in tall grass growing above an inside bend. Grass acts like a sieve and the largest gold pieces end up at the roots of grass. They often call this kind of gold oat gold. The pieces might be smaller than gold found in other places, but there could be a lot.

If you want to invest a little in your endeavor, you can purchase a metal detector designed to find gold. This gold mining equipment can cut down on the time spend hunting, but a mid-level detector can cost about $600.

When considering getting involved in gold prospecting and mining, make sure you learn and follow the rules. There are certain places where prospecting is legal and others where it is not. Many prospecting clubs exist and joining one can help ensure you are following rules. For examples, most sites require that you refill any holes you have dug, and that you do not destroy local plant life. Learn the rules before you head out with your gold mining equipment.

Once youve finished prospecting and have a location where you know there is gold, you will need gold mining equipment. What you use will depend on the size of your operation. If you are working in the gold industry, you will have industrial gold mining equipment. If you are mining on your own as a hobby, youll need smaller, personal gold mining equipment. Lets look at both.

If you want to use industrial mining equipment, make sure you have the proper training. If working for a business, they should provide needed training. However, if you purchased industrial gold mining equipment for a personal claim, be certain you know what you are doing. Safety should always come first.

Miners use drills for underground mining to create access holes for descending underground, or to place explosive charges to bring material to the surface. The drill miners choose depends on how and what is being mined.

Blasting tools create an explosion to blast away chunks of material to access minerals. Blasting can also remove chunks of unwanted materials that are keeping other machines or people from getting to a seam of wanted materials. In underground and open pit mines, miners use both drilling and blasting tools, often together. They use drills to place blasting tools at the right depth and in the right place.

Earth-moving machines move around large amounts of materials. They might haul material after blasting, move other materials allowing access to seams of minerals, dig underground mines, or get down to the bedrock where minerals might exist.

Crushing equipment moves materials around an underground mine. Miners use this equipment to keep the flow of materials going at an efficient rate, and to save money. It is easier to remove crushed rocks rather than heavy chunks, so crushing equipment saves time and effort.

A sluice box is a way to sift through raw material more quickly. Essentially, its automated panning. These machines used to be large and heavy in the early days of panning, but are now lightweight and easier to use. If youre serious about mining, they are worth checking out.

A higher quality sluice box, high banker boxes have a water pump allowing more material to move through faster. These boxes recycle water so you dont have to rely on water flow in the river. They recover more gold than basic models.

If you arent going into the professional gold mining industry, but are looking for a hobby or a part-time job to bring in a little extra money, consider joining a mining club to help you once you begin your prospecting journey. The club will help you learn about personal gold mining equipment, but, for now, lets take a quick look at what you will need.

There are lots of different sizes, colors, and options in gold pans. Essentially, a 14-inch plastic pan is the best size, by far. Color does not matter, however gold shows up better in black. Black sand shows up better in blue or green. There are many new kinds of pans, but a basic pan with sharp, undercut riffles is all you need. Make sure the bottom of the pan is as wide as possible to catch more gold.

You will need a place to store the gold you find. All you need is a waterproof container you can close tightly, such as a 35mm film container. You can purchase containers on the internet, specifically made for holding gold.

The last thing to consider is investing in Gold Lab, a personal system that recovers gold from the concentrate you have refined. A good gold panner can get most of the gold from refined dirt, but a Gold Lab kit will allow you to further refine and recover 100% of your gold.

Once you have your equipment, its time to get in the river to pan for gold. This simple technique mimics what the river does naturally. You recover material, or dirt and place it in the pan, from a river location where you think there might be gold. Then, you shake it in a left-to-right motion underwater to sweep away light materials while causing heavier materials to go to the bottom of the pan.

Take the pan with the riffles on the far side and shake it, vigorously, left and right. This breaks up materials sending heavier items to the bottom. Do not slosh water out of the pan. If you need to, repeat the previous step and break up larger chunks again.

Continue shaking the pan back and forth and keep removing the top layer of lighter materials until you are down to only the heaviest materials, such as coins, BBs, old bullets, buckshot, nails, garnets, black iron rocks and black sand. You should now be able to see gold in the pan when shaking and tilting it forward slightly.

Use a magnet to remove black sand and other metal objects. Keep removing things until only gold remains. Remove the larger gold pieces and save any leftover concentrate. Let it sit for a while so you can recover any remaining pieces of gold that settle.

If you have enjoy the outdoors, and have just a little ambition, you can make a hobby out of gold prospecting and mining. All you need are basic tools that as your gold mining equipment and the willingness to do a little research. Once you decide where to go, or join a mining club to help you find locations, pack up your tools and prospect. It may take practice at panning before you find anything, but once you do, youll love the feeling of satisfaction and discovery. If you find you enjoy the hobby, invest in semi-professional gold mining equipment and see if you can up the amount you discover. Even if you only discover a few flakes, prospecting can be a great way to make new friends, learn about the gold industry, and understand a little about gold prospectors of old. Its an inexpensive hobby, so grab basic gold mining equipment and get started today.

911MPE has for target market what mining professionals consider the pilot-plant scale mining operation or artisanal mining operations with a focus around under 500TPD. Metals you can extract include: gold, silver or other of the precious group as well as the classic base metals; copper, lead, zinc, nickel, molybdenum. Much of our ultra-small scale equipment allows you to process from just a few kilo (pounds) per day and work on your passion for a small budget.

gold detectors for sale buy the gold metal detector 2021 reasonable prices

Gold Master Company is an exclusive agent for major international factories in Dubai, UAE and the Middle East, with a length of 30 years experience in the field of gold and ancient treasures detectors, specializing in the trade of precious metal detector, raw gold detectors, groundwater detection devices. In association of a diamond and gemstone detector as well, Gold Master is unique in conducting an auditorium experiment for the device previously purchased, professional training and detached preserve throughout the warranty growth primordial that reaches 5 years, we have the funds for payment help, regarding receipt in most countries.

During our journey of more than 30 years, we have relied on being the exclusive agents of the largest German, American, and Russian factories, by adopting a direct partnership with international factories specialized in gold detectors, precious metals detector and archaeological treasures hunting

If you are hesitant about devices and do not have sufficient knowledge to choose the appropriate device for your goal, do not worry and leave it to us. We have a team of engineers specializing in training on devices and professionals in metal detecting system. our sales team will help you in choosing the right device for you based on the goal that You are looking for and the type of soil and the country where the device is used.

Browse our online store and choose what suits you from the devices based on the information provided on the page of each device, or visit our showrooms to see the latest modern and accurate technologies in the field of mineral exploration, and a specialized engineer will help you choose the appropriate device.

To complete the purchase and payment process, you can execute it electronically on our online store via Visa or Mastercard payment methods or by bank transfer to our companys official account by sending a purchase invoice approved by the company with the devices details, components and its serial number.

After completing the payment process, the shipping process will begin immediately, and the device will be delivered to you within 5 working days with the availability of tracking the shipment directly from your account on our website if you made the purchase online. But if you made the payment via a bank transfer, we will send you the tracking number.

There are a lot of successful gold detectors that have proven their efficiency in performance and detection of many valuable targets, but we will shed light on the latest of them, which is the German gold and metal detector Cobra GX8000. The device works with long range locator system, and this system is considered one of the best systems used in detecting metals. The device contains 4 research systems, which facilitates the search process for the user and obtains goals easily. The device is distinguished by its superb ability, which is the expansion of the research field up to 2000 meters in the frontal range, which helps to survey vast and open places,as well as difficult terrains such as mountains and valleys. The device also reaches a depth of 50 meters below the ground surface and this is the maximum depth that can be reached by Metal exploration devices.The device also contains 12 programs for the targets to be searched such as golden treasures, raw gold, veins of gold, silver, bronze, platinum, copper, iron, caves and voids, gems, diamonds and free frequency.

Gold Master provides a five-year warranty on all products and during the warranty, we provide maintenance, training and professional consulting that help you in achieving your goals, our after-sales services are working 24/7 to support you.

Browse our online store and choose what suits you from the devices based on the information provided on the page of each device, or visit our showrooms to see the latest modern and accurate technologies in the field of mineral exploration, and a specialized engineer will help you choose the appropriate device.

To complete the purchase and payment process, you can execute it electronically on our online store via Visa or Mastercard payment methods or by bank transfer to our companys official account by sending a purchase invoice approved by the company with the devices details, components and its serial number.

After completing the payment process, the shipping process will begin immediately, and the device will be delivered to you within 5 working days with the availability of tracking the shipment directly from your account on our website if you made the purchase online. But if you made the payment via a bank transfer, we will send you the tracking number.

chinese logistics firm airlifting bitcoin mining machines to maryland: report - coindesk

Photos appearing to show the equipment packed up and ready to be airlifted were shared on Twitter Monday by CNBCs senior correspondent in Beijing, Eunice Yoon. Guangzhou-based Fenghua International told CNBC it is airlifting 3,000 kg (6,600 lbs) of machines to Maryland.

The CNBC photos fit into an emerging narrative of bitcoins exodus from China but the Fenghua shipment represents a very small load, Heller said. The recent crackdown on bitcoin mining involves partial bans on the industry in multiple provinces.

Citing blockchain data, Heller estimates that 50 exahash per second of mining capacity in China has been turned off recently, or the equivalent of 526,000 S19 machines. One EH is equal to 1 million TH.

The leader in news and information on cryptocurrency, digital assets and the future of money, CoinDesk is a media outlet that strives for the highest journalistic standards and abides by a strict set of editorial policies. CoinDesk is an independent operating subsidiary of Digital Currency Group, which invests in cryptocurrencies and blockchain startups.