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Using a gold wash plant, exposed gold-bearing gravels are mined using a bulldozer that pushes and stockpiles the gravel near a wash plant. The stockpiled gold-bearing gravel is then fed into the wash plant by a front-end loader or large backhoe. This practice promotes equipment efficiency by allowing the bulldozer to continue mining while the loader or backhoe feeds the wash plant at a steady rate. When the mined gravel is fed into the washplant. It is classified by particle size using various stationary or vibrating screens. Classifying gravels provides for more efficient gold recovery, reduced water consumption, and facilitation of mine site rehabilitation, and is practiced by most operators. The oversize material, usually larger than two inches, slides out of the washplant into a pile where it can be moved by a front-end loader or bulldozer. The undersize material and gold-bearing gravel is mixed with water and flows through the sluicebox where the gold and heavy black sands are concentrated. Tailings are gravel, sand, and other materials accumulated at the end of the sluicebox. Tailings are routinely moved away from the sluicebox by a loader or bulldozer.

The water that carries the gold-bearing gravel through the sluicebox becomes sediment-laden and turbid. This muddy process water flows from the end of the sluicebox over a pile of fresh tailings into a series of settling ponds. These ponds are designed to hold the muddy water long enough for the fine sediments to settle. The physical design of the ponds depends upon the amount of water flowing through the system, the sediment characteristics of the gravels being worked, and the physical characteristics of the site. Most mines use a series of small settling ponds to permit more flexible water management. Small ponds are usually easier to build, repair, dean, replace, bypass, and rehabilitate than larger ponds. The use of pre-settling ponds is encouraged. A pre-settling pond is located in the tail race between the sluice and the first settling pond. Sands and other heavy settleable solids are collected here where they are easy to wash.

However, some zero-discharge systems do have occasional discharges, usually due to water seepage through pond dikes. This seepage almost always meets the settleable solids effluent standards, and in most cases, Is probably of better quality than the water discharged from typically operated settling ponds. I.e., less settleable solids and lower turbidity. Carefully designed and Implemented water management practices are required to achieve zero discharge of muddy water into adjacent streams. Water used in the sluicing process Is pumped from the nearby stream through the washplant and into the settling ponds. Water Intake from the stream Is suspended when the ponds contain adequate water to support continued sluicing operations by recycling pond water to the washplant. In some cases, groundwater seepage Into the settling ponds may be sufficient to eliminate the need for adding stream water to the system. The practice of zero discharge and the recycling of mine water contributes to compliance with federal effluent limitations and State water quality standards.

Placer mining involves equipment ranging from a simple gold pan all the way up to trucks, excavators, and a gold wash plant.This type of gold prospecting usually involves less investment and will consistently yield small amounts of gold, with occasional bonanzas for those who are persistent. If you can learn to reliably return from every trip with decent concentrates, so that over time you fill a five-gallon bucket, and then maybe even a fifty-five-gallon drum, with black sands, magnetite, ilmenite, rare earth elements (REEs), and gold, you will be rewarded in the long run.

Either way, your long-term goals are your own.Very few prospectors are simply in it for the money, looking at this as a way to become a millionaire overnight. Some of us just like to get out of town, camp in the mountains, and enjoy the spirit of the outdoors. Some people like to work up a little sweat and appetite, improve their health, and learn a little. Some of us like to solve problems and run machinery, and enjoy the challenge of keeping a pump going or making sure the sluice is running right. Still others like the wildlife, the scenery, and the historical importance of the Wild West, and bring back their riches as photos and videos. In each case, if you toss in a little gold fever as motivation and stay scientific about your sampling and exploration, you will prosper far and above the value of your recovered material.

Still, a nice payday is always a treat. One sure way to reach that goal is to keep trying. Keep practicing, keep exploring, and keep getting out in the field. Another truism that seems to hold is that the farther away from civilization you get. the better your chances.

The development of a load/placer mine and the selection of the proper gravity recovery plant is more difficult than most people realize. Television shows have glamorized mining making it look like anybody can start a mine with little to no experience. What people dont realize is that mining is a structured engineering discipline taught at university. Just as you should not build your own bridge without knowledge of civil engineering, you should not think becoming a miner is a simple task. If you have no experience in the mining field you need to get educated about the process before you embark on this adventure. We have compiled a basic guide to assist in that process.

The terminology used for this type of mining is often interchanged. The term for the type of deposit under consideration is alluvial. Alluvial deposits are formed when the gold has migrated from its original deposition by weathering to a new location often inactive stream beds or in historic watercourses now overlain by sediments or glacial sediments.

In general Placer Mining is typically the recovery of gold from stream sediments through the use of dredges and sluices or other gravity means. Load mining generally involves the stripping of an overburden layer (soil) to uncover the underlying gravels that contain the gold. These deposits are often mined with mobile equipment and the ore trucked to a gravity treatment plant.

1. Permitting am I allowed to disturb the land excavating pits, leaving tailings behind, water usage, noise, air quality. In most cases you are not allowed to simply start mining even on your own land without the proper permits.

2. Resource estimation how much gold is present (grade and tonnage) and what does the deposit look like over burden depth, ore depth, gravel size. Generally, a placer resource is established by drilling or augering holes around the deposit to delineate the extent of the gold. This is often combined with field gravity recovery testing to provide an estimate of the recoverable grade.

6. Mine plan do you have a mine plan where are you going to mine first, where is the overburden going to be placed, where are the tailings going to be placed, is the plant going to be in one spot or moved during the mine life, what are the haulage distances. Is this a seasonal operation?

Mine Conditions Where is your project located? terrain, climate, infrastructure variables How large is your concession? Is a mobile or fixed plant right for this application? How many yards/hour (m/hr or tons per hour) do you want to process? How much water do you have available (GPM or m/hr)? Is there power available from the grid or do you required generation?

Plant Characteristics Are you looking for a mobile machine that you move regularly or a stationary plant that you haul your ore to? What type/size of equipment will you be feeding the plant with (front end loader, dredge pump, other)?

Feed Characteristics Ore consistency: What is the estimated maximum boulder size (in, mm)? Is there significant clay present? What is your maximum gold size (mm or um)? Is there fine gold present, what is the typical size (um)?

8. Economic Model Once you have made some initial assumptions you need to develop an economic model (even a basic one) so that you know if the project is viable before you start. No matter what type of project you should try and establish some basic economics unless this is just going to be a small hobby operation where profit does not matter. There are a lot of assumptions required to develop the model and you need to be realistic in your assessment. Add contingencies for operating costs of 10-15% and 20-30% for capital costs.

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The iCON IGR 1000 is a semi-portable Gold Wash Plant that includes a scrubber/trommel and was designed by experienced mineral processing engineers. The classification process (double deck screen) assures that you are capturing both the big gold and fine gold efficiently. In this process, the grizzly will reject and rock larger than 75 mm. The rotating scrubber will then wash the feed and break up any clay. Next, the screen will classify the material. Any rock over 8mm will be rejected to tails. The material between 8mm and 2mm will be directed to the sluice. Material passing the 2mm screen will flow to the iPump which conveniently moves the slurry to the concentrators wherever you choose to locate them.

Using 2 gravity concentrators, the feed to the plant must be stopped to rinse the batch concentrators. Depending on your feed this may be every 2 hours. Installation of a third concentrator will allow continuous operation of the plant: 2 concentrators will be operating while the third is being rinsed.

This Gold Wash Plant Scrubber/Trommel and Screen capacity are 10 tph but iCONS are limited to 2 tph each of -2mm. For example if the feed gradation is 40% passing 2mm, the plant can be fed a maximum of 10 tph. If the feed gradation is 100% passing 2mm, then the plant can be fed 4 tph.

Before turning on the power, look into the bowl using a flashlight. Here you can see the end of the feed tube. You can see the three concentrate riffles at the top of the bowl. In the back of the concentrate riffles, you can see the holes/water jets.

Where the bottom of the bowl joins the wall, you see the narrow gap where the concentrate will exit the bowl. It is important to notice the size of this gap. If you feed your concentrator material larger than this gap it will plug up.

Next, hold your fingers of one hand in this gap and gently rotate the bowl with your other hand. The gap will be smooth all the way around the bowl. In the future, you may notice that the concentrate is not draining and you may feel that this gap is packed with oversized material. If this is the case you will have to form a wire into a hook and remove these oversize pebbles to allow the concentrate to flush easily.

Open the process water valve slowly while looking into the bowl. Slowly turn the bowl with one hand. Notice that all of the holes are spraying water. If, in the future, these holes are not spraying water, you will have to clean the filter or clean these holes.

With the water supply turned on, close the process water valve and record the pressure. Now, open the process valve fully and observe the pressure be careful not to allow this pressure to exceed 50 psi.

Spin the bowl electronically. Using the VFD control, spin the bowl at 2 hertz and then at max (i150 50 hz, i350 37 hz). Now turn on the process water and spin the bowl at min (2 hertz ) and max (i150 50 hz, i350 37 hz) while observing the jets inside of the bowl. At low rpm, the jets will spray to the center of the bowl. At high rpm, water will flow, but not in the form of jets.

While the bowl is spinning and the process water is flowing, note that the water is exiting the machine through the tails outlet. Assure that that fluid is satisfactorily flowing away from your machine and work area.

Once you are satisfied with the concentrators electrical function and satisfied with the plumbing inlets and outlets, it is time for a complete wet run. Follow the process: Standard operating procedure.

Small diameter concentrators require nearly no maintenance. For equal gs larger concentrators will have sand exiting the bowl faster and the areas contacted by this high velocity sand will wear out quickly. In both iCONs, this wear part is a used tire, available anywhere in the world.

iCONs also have higher reliability than larger concentrators. The bowls are connected directly to the motor shafts leading to a dramatic reduction in the count of moving parts to service and replace. This leads to higher reliability.

The process water should be fed from a dedicated supply line and pump. Connection to a manifold where other people may be using this same supply may cause wild fluctuation in the pressure and lead to unpredictable gold recovery.

In the case of running multiple icons in series, it is recommended to use a pressure regulator at each icon. Stopping the process water at 1 concentrator may cause a pressure spike at neighboring concentrators. Use of a pressure regulator will limit the effect of this spike.

The water pressure and cycle time are really the only parameters to consider to optimize the iCON operation. From time to time, the operator can gently place his fingers in the riffles of the spinning bowl at reduced rpm. If the riffles are loosely packed and the material rinses easily from the riffles, pressure is good. If the riffles are so densely packed that it is difficult to rinse them, then increase the water pressure.

Standard cycle times are 30 minutes for the hard rock ore and 60 minutes for alluvial. The simple way to assess the cycle time is to pan the tails every 5 minutes. The time at which you begin to find an increase of gold in the tails will determine your cycle time.

If poking out the holes does not allow all the jets to spray, you will have to dis-assemble the bowl to clean out the water jacket. The bowl does not have to be removed from the shaft. You only need to remove the 16 long bolts that hold the 2 part bowl together. With these bolts removed, the bowl can separate into 2 pieces allowing you to rinse the inside of the water jacket and poke the holes from the inside out. This can be done in less than 60 minutes.

For the benefit of the original user, IGR warrants all new equipment manufactured by IGR to be free from defects in material and workmanship; and will replace or repair, FOB at its factories or other location designated by it, any part or parts returned to it which IGRs examination shall show to have failed under normal use and service by the original user within one (1) year following initial start-up or eighteen (18) months from shipment to the purchaser, whichever occurs first. Such repair or replacement shall be free of charge for all items except for those items that are consumable and normally replaced during maintenance with respect to which repair or replacement shall be subject to pro-rata charge based upon IGRs estimate of the percentage of normal service life realized from the part. IGRs obligation under this warranty is conditioned upon its receiving prompt notice of claimed defects which shall in no event be later than thirty (30) days following expiration of the warranty period and is limited to repair and replacement as aforesaid.

THIS WARRANTY IS EXPRESSLY MADE BY IGR AND ACCEPTED BY THE PURCHASER IN LIEU OF ALL OTHER WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHETHER WRITTEN, ORAL, EXPRESS, IMPLIED, OR STATUTORY. IGR NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY WITH RESPECT TO ITS EQUIPMENT. IGR SHALL NOT BE LIABLE FOR NORMAL WEAR AND TEAR, NOR FOR ANY CONTINGENT, INCIDENTAL, OR CONSEQUENTIAL DAMAGE OR EXPENSE DUE TO PARTIAL OR COMPLETE INOPERABILITY OF ITS EQUIPMENT FOR ANY REASON WHATSOEVER.

This warranty shall not apply to equipment or parts thereof which have been altered or repaired outside of a IGR factory, or damaged by improper installation or application, or subjected to misuse, abuse, neglect or accident.

This warranty applies only to equipment made or sold by iCON Gold Recovery Corp. IGR makes no warranty with respect to parts, accessories, or components manufactured by others. The warranty, which applies to such items is that offered by their respective manufacturers.

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China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: mining equipment, gold mining machine, mining machine. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Gold Mining Plant. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Gold Mining Plant factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.

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We offer consulting services and can help you decide the viability of your potential site and what mining equipment is right for you. Our gold wash plant prices are set based on the intensity of usage at these sites.

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This small scale rock gold processing plant is suitable for 1-2 tph capacity.It will include a jaw crusher, a hammer mill, a ball mill and 1-2 sets of shaking tables. Except these machines, you can also add a 8-10 meters belt conveyor and make a hopper with grizzly bars. It will help you to feed the ores by the load vehicle. Contact Us to get more details of this processing plant.

1. The 1st step Crushing. The Raw rock minerals will be fed into the crushers to get the discharge size less then 25mm. Usually it will need 2 crushers, the primary crusher is for cutting down the big size of rocks, and the second crushers is for getting the size of -25mm.

2. The 2nd step Grinding. The grinding machine will be ball mill or wet pan mill. If you need to grind the minerals without waters, then you should choose ball mill. The ball mill has a grinding rotary drum, there are liners inside of the drum. Usually the liners are manganese steel liners, some times, the customers ask the liners can be corrosion resistant, so we will make ceramic liners and rubber liners. The discharge size from the ball mill will be around 200 mesh. It will make a good performance for the mineral particle separators by gravity separators or flotation machines.

3. The 3rd step Separating. The discharge from the grinding machines will be in the size of 0-2mm. Most gravity separators can do a good work for separating the concentrate from the ores. It includes the shaking tables, centrifugal concentrators, jigger machines and spiral chutes. Sometime, we do also choose the flotation machines to get the concentrate mud. It depends on the ores situations.

Due to the size,shape and specific gravity of alluvial gold, the most effecient method is using washing plant. It always includes a trommel screen, vibrating sluice boxes, a centrifugal concentrator and shaking tabls. If the alluvial gold with very sticky clay, then the trommel screen should be changed into a rotary scrubber with a trommel screen.

We have more than 25 years experience, and the machines are sold to all over the world. Our engineers can go to your local mining site for leading the processing plant installation and train your staffs.

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Heckler Fabrication offers custom Gold Trommel Washplants & Large Commercial sized dredge, hand sluice, trommel wash plant , , dredge,, gold dredge, No gimmicks, just proven riffle designs & easy to use Email inquiries/ orders to: [email protected] *Phone inquiries/orders:916-782-1777 Roseville CA.

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In total, five 36" centrifuge's were used for primary gold and sulfide recovery. placer mining equipment company placer mining equipment for sale placer The exploration plant shown here was a scrubber/classifier trommel with twin 20" the large scale of this 5 ton/hr Air-Impact mill for a hard-rock operation in Nevada.

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28 Sep 2012 Casablanca Mining Installs Alluvial Wash Plant at Free Gold Property gold wash plant large capacity gold ore washing plant trommel Product Listing Policy Intellectual Property Policy and Infringement Claims Privacy Policy Terms of Use [email protected] PO Box Mesquite, NV Skype:

How and where to find gold in the deserts and mountains. a few miles up into the Sierra Nevada range, where you'll find streams that may put gold fines and small nuggets into your pan. dollars, that sucks up dirt and gravel from the stream bed for separation; a trommel, Small one ounce bottles are used to store gold.

Gold Watch Project. [email protected] PO Box 2605. Mesquite, NV 89024 Manufacturers of high quality, affordable, mercury free gold wash plants for all All machines use Premium Rexnord bearings on the shaker system that Little to no set up required; No trommels to slow production or get jammed up

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15 Mar 2013 Heavy equipment will be used to break up the structure. . Casablanca Mining Installs Alluvial Wash Plant at Free Gold Property | Business:http://sol. gold wash plant large capacity gold ore washing plant trommel Final drive is adjustable between 9-19 [email protected] PO Box Mesquite, NV

Lode Mining Claims For Sale. YOU BET MINE. A unique opportunity to joint venture While Nevada County has produced more gold than any other county in They first used drift mining techniques whereby tunnels were driven in along bedrock. a six-yard bucket loader, and a portable trommel (wash plant) capable of

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(CIP gold processing plant diagram) #1. Crushing. The raw gold ore transported to the CIP gold beneficiation plant must first be crushed. Crushing is a process of breaking large pieces of ore into smaller-sized ore. Multi-stage crushing combined operations are often used in carbon slurry plants.

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~ Reinforced 3/16 steel hopper base (most built with 1/8 steel), side loading (either side) with a hopper length of 10(120) and a width of 52(62), ideal for backhoe, front-end loader or skidsteer loading, which feeds down to 32 x 25 screen (3/8 classification) to sluices (reinforced below screen for stability).

~ Height of the hopper for transport is 78 (66) tall at about a 3% grade, but two front jack stabilizers increases pitch up to 18% grade, with center jack with two locking pin guides with multiple setting heights.

~ 4 heavy duty springs (rated at 2k lbs each) between the hopper and the frame to allow for hopper to vibrate more freely. Hopper weight is approximately 600 700 lbs, so even with a full yard of material (around 2500 lbs), the springs are more than adequate.

~ Reinforced with galvanized steel pipe water lines over hopper sides and screen deck (to protect lines when feeding hopper). Screen deck water lines were made adjustable, to adjust pitch of spray through the wash chute.

~ Flared slick plate, which is to send pay material from the collection to the sluices, this is 17 (to match to sluice), so set up to run into 18 wide sluices, which seem to work ideal with 2 to 3 water pump.

~ 3 concrete vibratory motors (along with carriage bolts) with this unit, one (already installed) on the steel plate mounted directly to the screen deck and two new additional concrete vibrators for the hopper. As this is brand new, it is better to start running water and material first through hopper area, before determining the best position for those concrete vibrators. These can be easily ran from a small generator.

New, basic units like this sell for $12k+ (when you can find them, without shipping costs, and without as many adjustable features). Again, I am not planning to include hoses (to and from pump and to connect to wash plant), generator, sluices or trash pump in the package, but can make a bundle package for it all, for $7,000.

Selling because; In the spring of 2019, a fellow mining colleague and I, built an additional wash plant (the grey one you see being loaded) to use for taking samples and running material at one of our side operations. We found that this is an excellent unit for someone to run solo, perhaps with a backhoe or small piece of equipment. But as our other operations expanded we found little use with our larger operations and other trommels and equipment we ran. The first (grey) wash plant was a great unit, easy to maneuver into place, no hauling issues whatsoever. In the fall of 2019, we posted an ad, and the unit sold in two days. I had several of my long-term clients a bit upset that it sold so fast, so over this last winter (while I wasnt able to mine), I committed to build 4 more identical wash plants for clients. I did add in a few extra features that the grey one didnt have, and the 3 clients the other plants already went to, are pretty pleased with how their units turned out. What I will make pretty clear though, after this project taking many months to complete (longer than anticipated), I do not intend to build any more of these in the future, unless it is for my own operation, it is just not worth it to me. I have had others already inquiring, so please do not contact me to build you something, and when this unit is gone, well, that is it.

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Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line. Dewo Machinery can provide high quality products, as well as customized optimized technical proposal and one station after- sales service.

Alibaba.com offers 1,792 portable gold mining equipment for sale products. About 23% of these are Mineral Separator, 0% are Other Mining Machines, and 9% are Crusher. A wide variety of portable gold mining equipment for sale options are available to you, such as condition, local service location, and applicable industries.

Goldlands' technicians have designed and manufactured proprietory industrial gold mining equipment since 1977. The mining machinery manufactured include a host of Gold Recovery and Mineral Processors including Gold Concentrators and Separators, Portable Placer or Alluvial Wash Plants, Portable Crushers, Trommels and Scrubbers, Gold Centrifuges, Jig Recovery Units, Rotary Helix Concentrating ...

Portable Highbanker Trommel $999 with FREE SHIPPING! Looking for a versatile gold mining machine classifier, highbanker, trommel that will get the gold? Want one light-weight machine that will do it all? Check this out! Use as a highbanker or switch out the top box in minutes and install the 5 inch "Lil Monster" and run as a trommel!

In the Portable Wash Plant, the Smelting Furnace is used after the Gold Concentrating Table, to remove the unwanted impurities while melting the Gold. The result will be a melted gold and a slag that are separated from each other due to the difference in its melting point and density.

We supply 18 inch, 30 inch, 48 inch, 60 inch, & 7 foot Trommels for Placer Mining. Refurbished trommel parts will be fully repaired or replaced as required. Our Trommels and Gold Recovery Equipment are for sale worldwide. We sell Portable Gold Trommels, Mini Wash Plants, and Gold Trommel Wash Plant.

200tph rock gold mining plant in sudan - jxsc machine

Gold-bearing minerals are divided into gold placers and mines. Therefore, there are two kinds of gold mining equipment: one is placer gold mining equipment, which mainly uses gravity separation and amalgamation principle. One is the mine crushing gold, mainly using gravity, flotation, amalgamation and cyanidation methods. Gold ore dressing equipment is mainly used in places where there are rivers or sand and other raw materials-based areas, especially on both sides of the river and dry riverbed used more. Mine crushing equipment used for gold mines, gold ore needs to be broken after ball milling for gold dressing.

Gold placer equipment to stir the clay trough, shaking table, Jig or centrifuge-based. Both the clay tank and the centrifuge can mechanically clean the coarse concentrate with a large capacity and a high recovery rate. From the process configuration, it also reduces the space position and floor area as compared with the solid tank.

It will no doubt replace the process dominated by a single fixed clay groove. This kind of flowsheet equipment is compact in configuration, makes reasonable use of space and the natural height difference of the gold-mining equipment, realizes the self-flow return of the ore pulp, thus simplifies the gold-dressing process and reduces the loss of gold by the cleaning operation. This process will eventually take the place of the hole-jig process.

In addition, the process of dewatering and desliming of raw ore will be added to the placer gold equipment, and the gold-bearing heavy sand will be extracted, and the final product will be extracted in the onshore concentrator, which can simplify the gold separation process on the placer gold equipment, reduce the loss of gold and increase the recovery rate of gold.

gold processing,extraction,smelting plant design, equipment for sale | prominer (shanghai) mining technology co.,ltd

Prominer maintains a team of senior gold processing engineers with expertise and global experience. These gold professionals are specifically in gold processing through various beneficiation technologies, for gold ore of different characteristics, such as flotation, cyanide leaching, gravity separation, etc., to achieve the processing plant of optimal and cost-efficient process designs.

Based on abundant experiences on gold mining project, Prominer helps clients to get higher yield & recovery rate with lower running cost and pays more attention on environmental protection. Prominer supplies customized solution for different types of gold ore. General processing technologies for gold ore are summarized as below:

For alluvial gold, also called sand gold, gravel gold, placer gold or river gold, gravity separation is suitable. This type of gold contains mainly free gold blended with the sand. Under this circumstance, the technology is to wash away the mud and sieve out the big size stone first with the trommel screen, and then using centrifugal concentrator, shaking table as well as gold carpet to separate the free gold from the stone sands.

CIL is mainly for processing the oxide type gold ore if the recovery rate is not high or much gold is still left by using otation and/ or gravity circuits. Slurry, containing uncovered gold from primary circuits, is pumped directly to the thickener to adjust the slurry density. Then it is pumped to leaching plant and dissolved in aerated sodium cyanide solution. The solubilized gold is simultaneously adsorbed directly into coarse granules of activated carbon, and it is called Carbon-In-Leaching process (CIL).

Heap leaching is always the first choice to process low grade ore easy to leaching. Based on the leaching test, the gold ore will be crushed to the determined particle size and then sent to the dump area. If the content of clay and solid is high, to improve the leaching efficiency, the agglomeration shall be considered. By using the cement, lime and cyanide solution, the small particles would be stuck to big lumps. It makes the cyanide solution much easier penetrating and heap more stable. After sufficient leaching, the pregnant solution will be pumped to the carbon adsorption column for catching the free gold. The barren liquid will be pumped to the cyanide solution pond for recycle usage.

The loaded carbon is treated at high temperature to elute the adsorbed gold into the solution once again. The gold-rich eluate is fed into an electrowinning circuit where gold and other metals are plated onto cathodes of steel wool. The loaded steel wool is pretreated by calcination before mixing with uxes and melting. Finally, the melt is poured into a cascade of molds where gold is separated from the slag to gold bullion.

Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.