mining jaw crusher lubrication oman

mining tip revisited: proper crusher lubrication - tip of the week - lube talk - mobil connect

Jaw crushers: In jaw crushers, a large feed opening receives material. There are two outer bearings located on either side of the main frame to support an eccentric shaft. There are also two inner bearings known as pitman bearings that support a moveable jaw. The reciprocating motion of the shaft moves the pitman against stationary jaw and as material reaches the bottom of the chamber, it fractures. Jaw crushers typically use spherical roller bearings, which support radial loads and misalignment. These bearings also operate under moderate speeds and loads, with occasional load spikes.

Cone gyratory crushers: In a cone crusher, the main shaft is housed in a frame attached to a mantle. A pinion shaft assembly drives a bevel gear that rotates the cone. As material presses against the bowl, it is crushed into smaller pieces. Cone crushers have two radial and two axial bearings. The radial bearings are cylindrical roller bearing, while the axial bearings are tapered thrust and cylindrical thrust bearings. These bearings operate at moderate speeds but support heavy loads as well as occasional shock loads.

Impact hammer crushers: Hammer mills are typically used as secondary crushing. They have high rotational speeds with variable loading conditions and use spherical roller bearings to handle radial loads and shaft misalignment. These bearings are of split pillow block design and provide support during crusher operation.

Oils: As a general rule, operators should use extreme pressure fortified gear lubricants with a minimum viscosity of 22 cSt at the bearing operating temperature. This typically demands an AGMA 3 EP or 4 EP gear oil. The lube oil should operate in a range between 10 and 50 degrees Celsius. Operators should also implement a routine oil sampling program to effectively monitor oil and crusher condition, as the demanding operating conditions of this equipment can lead to sudden changes in performance.

Greases: Operators should look for lithium or calcium soap-based greases that have a base oil viscosity of ISO 220 to 460 and that contain extreme pressure additives. In some cases, operators may use greases that contain a molybdenum disulfide additive to protect against adhesive wear. Most crusher bearings should be frequently re-greased to ensure proper lubrication and the purging of external contamination.

crushing, screening, conveying, feeding, grinding machine for mining-yantai rhyther mining machinery co.,ltd

Yantai Rhyther Mining Machinery Co.,Ltd specializes in designing, manufacturing, installing, and commissioning mine concentration equipment (10,000t/d), such as crushing, screening, conveying, feeding, grinding, classifying, agitating, magnetic separation, gravity separation, floatation, dewatering, cyaniding, and metallurgical extraction equipment, etc.

Rhyther Mining's EPC service refers to the turnkey project services that we not only supply the equipment, but also provide full set of services including engineering design, equipment procurement, plant construction, installation, commissioning and training to make the mineral processing plant reach the expected recovery rate.

jaw crusher | primary crusher in mining & aggregate - jxsc mine

Product Introduction JXSC jaw type rock crusher is usually used as a primary crusher and secondary crusher to reduce the size of medium-hard materials to smaller physical size. Jaw rock crushers are capable of working with the mobile crushing station, underground crushing because of its related small volume. Capacity: 1-1120TPH Max Feeding Size: 120-1200mm Application Mining, metallurgy, building materials, quarrying, gravel & sand making, aggregate processing, recycling, road and railway construction and chemical industry, etc. Suitable Material Granite, marble,basalt, limestone, coal, quartz, pebble, iron ore, copper ore, etc.

40 years of manufacturing and engineering experience keep us innovative and knowledge in the rock break machines and its applications, which thus provide reliable industry rocks crushers and solutions for every customer using jaw crusher manufacturers JXSC machines to meet their production goals. The jaw crusher machine family consists of different sized models that are designed to bring maximum output with minimum cost. Some workplaces have limited conditions and are unable to provide electricity or are underpowered. According to these conditions, JXSC specially designed diesel jaw crusher. The diesel-jaw crusher is actually with electric, but the original jaw crusher was added with a diesel engine equipment that a dual-purpose crusher.

JXSC the crushers machine with a non-welded frame has been proved that it has outstanding solid and durable strength. All the alloy casting frame components turn out that with premium quality, wear-resistant property.

The design of pitman and long stoke improves productivity and reduction. A wider feeding material opening increases the volume of insulating material and makes the ore material entering the crushers crushing chamber smoothly. A sharp angle makes the materials flow down speed faster and reduces the wear cost. Besides, the strike force could be stronger thus increase the production efficiency as well as the reduction ratio.

Types of jaw crushers: on the basis of the stone break equipment size and capacity can divide into a heavy and small(mini) portable jaw rock crushers. According to the working principle can be split into single toggle and double toggle jaw rock crushers machine.

A series of jaw stone crushers use compressive and squeezing force for reducing materials. This physical force is created by the two jaw plates, one of which is a movable plate and another is fixed, both of them are made of manganese. A V-shaped cavity, crushing chamber, is formed and the hydraulic discharge gap width of the crushing chamber, we can determine the suited feeding material size and discharging size, the width of top feeding is larger than that of bottom discharging.

Jaw crusher is a heavy-duty machine that crushes hard materials. So its hence muse be robustly constructed. Crusher frame is made from steel or cast iron. The jaws are made of cast steel. The liners are made fromNi-hard, Ni-Cr alloyed cast iron or manganese steel which can replaceable and use to reduce frame wear. The cheek plates are also made from hard alloy steel and installed to the sides of the crushing chamber to protect the frame from wear.

The jaws can be made in smooth or corrugated, but often corrugated. Because the latter crushing the hard and abrasive ores is better. The angle between the jaws is usually less than 26. This is because a large angle will cause the particle to slip which non-crush.

It uses curved plates to avoid the near the discharge of jaw crusher blocking. The bottom of the swinging jaw is concave, and the relative lower part of the fixed jaw is convex. The materials reduction in size when nears the exit. So the material is distributed over a larger area, and the jaws plates wear less.

The type of crushed materials determines how to design the max amplitude of swing of the jaw and the amplitude adjusted by changing the eccentric. The length from 1 to 7 cm depends on the crusher machine size. Jaw crushers are supplied in sizes up to 1,600 mm (gape)1,900 mm (width). For coarse crushing application (closed set~300 mm), capacities range up to 1200 tph.

Jaw crusher parts must have some wear after a period of use, but the easily damaged parts will wear out more. The price of crushing equipment with the same specifications and handling capacity is different in the material of parts.

Guard Plate The guard plate is made of high-quality high manganese steel, which is located between the fixed plate and the movable plate. The whole body is mainly to protect the jaw crusher frame wall.

Toothed Plate Tooth plate is divided into movable and fixed tooth plate, but both is made from high manganese steel casting. In order to prolong its service life, its shape is designed to be symmetrical. That is when one end of the wear can be used to turn the head. The movable and the fixed teeth plate are the main parts for stone crushing. So the movable teeth plate is installed on the movable jaw to protect the movable jaw.

Toggle Plate The toggle plate is a cast iron piece that has been precisely calculated. It is not only a force transmission component but also the safety parts of the crusher. When the crusher falls into the non-crushing material and makes the machine beyond the normal load, the toggle plate will immediately break. Then the crusher machine stops operation, thus avoiding the damage of the whole machine. The toggle plate and the toggle plate spacer adopt the rolling contact model which less attrition under normal use. It just needs smear a layer of grease on the contact surface is ok.

Triangular Belt When the motor transmits power, the triangle belt is connected with the pulley and the grooved pulley of the motor to drive the eccentric shaft and make the moving jaw move back and forth according to the predetermined track.

The tooth plate of the most jaw crushers are made of manganese steel, bearing linings are made of babbitt alloy, sliding blocks are made of carbon steel, toggle plates are made of cast iron, springs are made of 60SiMn. Regular Inspection and maintenance of the machine can extend its service life. In order to reduce customer costs, we will generally be in the purchase of customers are advised to buy some spare parts. Because once the parts need to be replaced, the temporary purchase will take some time. The wait time may cause the entire breakage line to suspend operations, thereby increasing operating costs.

In short, the jaw stone crushers are mainly used for primary crusher, the crushing stone is relatively large. The types of crusher machine's chamber are deep and no dead zone. It improves that the feeding capacity and output. The crushing ratio is large and the product particle size is even. Shim type outlet adjustment device, reliable and convenient, large hydraulic adjustment range that increased the flexibility of the equipment. Simple structure, reliable work and low operation cost. The adjustment range of hydraulic discharge opening is large, which can meet the requirements of different users, low noise and less dust.

Impact crusher for crushing medium-hard stones, and mostly used for secondary crusher. The impact crushers have a big feeding port, high crushing cavity, high material hardness, big block size and little stone powder. Convenient maintenance, economic and reliable, high comprehensive benefit.

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

projects oman mining company

OMCO owns the rights to Block 10 with well connected roads and towns in its vicinity. It is located approximately 100 km South of Sohar. Block 10 has significant resources of Cu-Au mineralization found during various exploration activities. Besides Cu-Au the block includes significant chromite potentials. OMCOs strategy is similar with the copper blocks in dealing with the environmental heritage from before and implementing a green and sustainable operation thereafter.

The project was to find out how to apply a cost effective technology to clean up contaminated ground and surface water, and tailings. In parallel the pilot analyzed how to get metals, especially gold, into solution and to test GGTs proprietary gold extraction technology, mostly to establish cyanide free leaching and a cost effective, environmentally friendly, large scale leaching process to remediate large amounts of mining waste. The proof of concept has been successfully delivered and in extensive serials of tests and analysis it could be established how to proceed with the next phases of the project.

The Gold plant is located in Rakah, Wilayat of Yanqul. The plant was commissioned and commenced production in August 1994. The annual design capacity was to produce approx. 500 kg of gold. The process plant was a simple conventional cyanide leaching method with the gold recovery by activated carbon. The gold ore produced by OMCO was sent to an overseas refinery for further processing.

Run of ore was crushed in jaw crusher. The concentrator utilized autogenous milling and water flotation. This was a two stage fully autogenous circuit; the primary mill provides pebbles for a secondary mill through a pebble extractor valve in the primary mill discharge trunnion actuated by the power draw of the secondary mill.

The concentrate was pelletized and dried to 1% moisture. The pellets were mixed with limestone, silica flux and recycled copper bearing flue dust and fed into a 7 MVA electric furnace. The furnace smelted the copper concentrate and fluxes produce copper matte and slag. The copper was transferred to one of two Pierce Smith converters where sulphur and iron were oxidized by blowing with air. The blister copper was finally fire refined in an anode furnace, blown successively with air increasing the copper grade and the copper was cast into anode.

In the electrolytic refinery, the anode copper was further refined to produce copper cathodes of 99.999% purity, which was exported to various destinations. The designed annual production capacity was 20 000 tonnes copper cathodes. A study was undertaken to increase the capacity to 24 000 tonnes per annum.

Electric power to Sohar Copper Project and Township was catered by two 18 MW heavy duty industrial gas turbines owned and operated by OMCO. Surplus power over OMCO requirement was currently exported to other entities.

nordberg c150 jaw crusher archives - international mining

What will crushing plants of the future look like? Mineral Resources Ltd and Metso Outotec have pondered that question and have since gone on to answer it with the delivery of a modular, scalable and relocatable plant at an iron ore operation owned by one of the worlds biggest miners.

Called NextGen II, the solution represents a ground-breaking approach to delivering safe and reliable production to the hard-rock crushing industry, Mike Grey, Chief Executive of Mining Services for Mineral Resources, says.

We were sitting around the boardroom table with David De Haas, one of our key engineers on this project, and gave him the challenge to come up with a crushing plant that we could literally relocate anywhere very quickly, build on a very small footprint, and have it plug and play, Grey told IM in a recent IM Insight Interview.

A provider of world-class tailored crushing, screening and processing solutions for some of the worlds largest mining companies, CSI specialises in build, own, operate (BOO) projects where it provides both the capital infrastructure and the operational expertise to ensure these crushing plants operate to their potential on site.

Having initially commenced discussions with the global OEM in early 2019 (when it was still Metso), Mineral Resources, later that year, agreed with Metso on the design and delivery of a new type of crushing solution.

The largest bulk commodity operations in the world are made up of multiple pits that get mined over time. As these operations expand, miners are left with a dilemma: extend the haulage time from the pit to the plant or build another plant.

De Haas, collaborating with Metso Outotec, has delivered on the boards brief with the design for a crushing plant able to produce 15 Mt/y using a modular design made up of several stations. The plant can move with the mining, being erected and taken down quickly without the type of in-ground services that can scupper such moves.

The NextGen II is a crushing and screening plant to crush iron ore and produce lump and fine products, he said in the IM Insight Interview. The process starts with a primary station made up of a Metso Outotec apron feeder (below left), followed by a vibrating grizzly scalper. Then starts the size reduction process with a Nordberg C150 jaw crusher (below middle).

The screen was designed specifically for the project offering the compact dimensions that could fit inside the stations footprint. Other customised add-ons included specialised cooling rooms for the lubrication units and extensive steel fabrication works.

Lambert added: Really, the tailoring of design is around the modularity of the different stations. Each station is made up of several modules. All those modules can be pre-assembled and tested in a factory and transported by road to the site. This has been established to enable a fast erection process.

Despite a timeline setback caused by the global pandemic, the 1,500 t of steel needed for the plant construction was built in 16 weeks, starting in March 2020 and ready by July 25 of that year. It was shipped to CSIs Kwinana facility in Western Australia for pre-assembly before delivery to site.

A distinctive blue colour, the plant reflects Mineral Resources commitment to mental health awareness and support, carrying the phone number and colour of Lifeline, a Western Australia-based charity formed to prevent suicide, support people in crisis and reduce the stigmas which can be a barrier to seeking help.

It is really important for us to promote mental health; our fly-in fly-out workforce has matured over some years, but the challenges around working remotely remain, Grey said. It is important that we demonstrate we have the support mechanisms in place to support our workers and their families.

The NextGen II plant is at the forefront of that it is the first thing people see when they come to work and the last thing they see when going home. They can always reflect and make sure their work mates are OK.

The plants operating success has been helped by a local service and support network from both companies, with Metso Outotec providing critical spares and all large rotable refurbishments serviced by CSIs Kwinana facility.

Understanding the challenges and potential delays for parts deliveries due to MRLs remote location, the companies agreed to a specific consignment inventory close to the site to ensure parts availability and exclusivity for MRL to better support the operation.

Working with Metso Outotec on this project has allowed us to define the scope together, rather than remotely, Grey reflected. That allows us to ensure we deliver to the timelines and then make any necessary changes on the run, hand-in-hand. We deliver the solution together.

Lambert added: Metso Outotec is an indisputable leader in crushing and screening technology, as well as plant. However, working with MRL, we learned a lot about improving the design of our station to maximise safety and improve accessibility in a very, very compact environment for high-capacity plant.

The NextGen II plant is very flexible, he said. Each station is individually plugged into the solution, and we can easily upgrade the crusher, the screen, etc throughout the year depending on capacity needs.

Adding or removing some stations could see the throughput reduced or increased, with Lambert even talking about the ability to construct a 30 Mt/y plant that can be built, erected and relocated in the same way as the first 15 Mt/y plant.

In addition, NextGen II, today, is designed for iron ore applications with lump and fine products, he said. If we want, we can add a tertiary crushing stage in order to produce only fines for iron ore. This can match with copper and gold operations also.

There are plenty of gold miners extracting ore from multiple pits that could provide a strong business case for the installation of such a plant. Similarly, there is potential for this working at major open-pit copper mines.

Lambert concluded: There is, for sure, global demand for modular crushing plants. Today, having a fast and safe erection process is a must in many countries and locations. In addition, we have more and more short-term operations emerging in very remote locations, so having the possibility to minimise civil works is key for a lot of our customers.

pe jaw crusher

This type of crusher has a long history and belongs to traditional crushing equipment. Its motor drives the eccentric shaft to rotate via V-belt pulley and movable jaw to carry out a periodical complex pendular movement to generate crush capacity. There are two types: coarse crusher and fine crusher.

With the features like simple structure low price reliable operation and convenient adjustment of discharging opening it is very suitable for crushing the damp ore and the ore with a large content of clay with relatively coarse crushing grain size.

Since the end of the 19th century, jaw crusher has been used in ore crushing and aggregate processing industries for more than a hundred years. Rhythers PE Jaw Crusher is developed based on century-old accumulations. So, performances of PE Jaw Crusher is totally reliable.

Allowing for the operating conditions of jaw crushers are relatively severe and the quick-wear parts may be consumed rapidly, Rhyther thought deeply in selecting materials for core parts and adopted high-quality high-manganese steel casting which is most recognized in the world at present. This casting greatly extends the service life of core parts and effectively avoids too many shutdowns and maintenance tasks.

When materials which cannot be crushed fall into the jaw crusher and a load of crushing machine exceeds the normal level, the elbow plate designed by Rhyther can realize automatic fracturing and then stop the jaw crusher, thus avoiding the damage of the entire machine and guaranteeing the production safety.

Even though the structure of PE Jaw Crusher is relatively simple, all processing procedures require precise processing, for example: only precise machining, heat treatment and flaw inspection can guarantee the eccentric shaft to possess sufficient strength and rigidity; only precise blanking can guarantee the weights and structures of flywheel and grooved wheel to enhance the operating balance of the jaw crusher. For this purpose, Rhyther formulates strict quality inspection procedures and uses advanced machining equipment to deliver perfect jaw crushers.

Rhyther, whose businesses cover production and sales, takes responsibility for every machine produced by ourselves. We can offer customers technical services about products and original spare parts to ensure the worry-free operation.

The motor transmits power through belt, drives the moving jaw do periodic motion to the fixed jaw surround the eccentric shaft. The angle between toggle plate and moving jaw increases when moving jaw moves up. So the moving jaw closes to the fixed jaw, and the staff will be crushed in multiple ways. The angle of Jaw crusher between toggle plate and moving jaw decreases when moving jaw moves down, the moving jaw of jaw crusher moves away from fixed jaw by the pulling force of rod and spring, the products after crushing will be discharged from the outlet of Jaw crusher.

jaw crushers | retsch

Retsch Jaw Crushers are used for the rapid, powerful crushing and pre-crushing of medium-hard, hard, brittle and tough materials. The variety of materials offered, their efficiency and safety make them ideal for sample preparation in laboratories and industrial plants. Applications Alloys, basalt, cement clinker, ceramics, chamotte, coal, coke, construction materials, feldspar, glass, granite, minerals, ores, oxide ceramics, quartz, rocks, silicon, slag...

Retsch Jaw Crushers are used for the rapid, powerful crushing and pre-crushing of medium-hard, hard, brittle and tough materials. The variety of materials offered, their efficiency and safety make them ideal for sample preparation in laboratories and industrial plants.

The Jaw Crusher BB 50 has been specially designed for sample preparation in the laboratory. It is used for the rapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials.

The space-saving, dust-tight instrument fits on any laboratory bench and is ideally suited to crush small amounts of sample with large feed sizes gently and without loss. To avoid metallic contamination, the grinding chamber of the jaw crusher is available of ceramic materials. With its digital gap width display and zero-point adjustment, the jaw crusher BB 50 allows for reproducible results.

The Jaw Crusher BB 100 is used for the rapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Its variety of materials offered including heavy-metal free steel, its efficiency and safety make this Jaw Crusher ideal for sample preparation in laboratories and industrial plants.

The Jaw Crusher BB 200 is used for the rapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Its variety of materials offered, including heavy-metal free steel, its efficiency and safety make it ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample, the BB 200 can be used batch-wise; for larger amounts, it can be operated continuously. Control of the gap width and zero-point adjustment allow for reproducible results. The Belleville spring washer protects the Jaw Crusher from overloads and in conjunction with maintenance- and lubricant-free sliding bearings guarantees a long service life.

The Jaw Crusher BB 250 is used for the rapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Its variety of materials offered, including heavy-metal free steel, its efficiency and safety makes this jaw crusher ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample, the BB 250 is used batch-wise; for larger amounts it can be operated continuously. Control of the gap width and zero-point adjustment allow for reproducible results. Thanks to the modular construction of housing and frame this jaw crusher is suitable for a wide range of applications

The Jaw Crusher BB 300 is used for the rapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Its variety of materials offered, including heavy-metal free steel and its efficiency and safety makes the BB 300 ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample, the Jaw Crusher BB 300 can be used batch-wise; for larger amounts it can be operated continuously. Control of the gap width and zero-point adjustment allow for reproducible results. The Belleville spring washer protects the unit from overloads and in conjunction with the central lubrication guarantees a long service life.

The Jaw Crusher BB 400 is used for therapid, effective crushing and pre-crushing of medium-hard, hard, brittle and tough materials.Its variety of materials offered, including heavy-metal free steel, its efficiency and safety makes it ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample, the BB 400 is usedbatch-wise; for larger amounts it can be operatedcontinuously. Control of the gap width and zero-point adjustment allow for reproducible results. Thanks to the modular construction of housing and frame this jaw crusher is suitable for a wide range of applications.

The Jaw Crusher BB 500 is used for rapid, effective, crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Its variety of materials offered, including heavy-metal free steel, and its efficiency and safety makes the BB 500 ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample, the BB 500 is used batch-wise; for larger amounts it can be operated continuously. Control of the gap width and zero-point adjustment allow for reproducible results. The BB 500 with its steep crushing chamber and powerful drive provides for very effective crushing kinematics.

The Jaw Crusher BB 600 is used forrapid, effective, crushing and pre-crushing of medium-hard, hard, brittle and tough materials. Due to the low installation height (1 m), the BB 600 isideally suited for continuous operationin automatic installations and sampling stations. Thanks to the compact design of the BB 600 it may replace a jaw crusher in existing installations. Small sample amounts with large particle sizes can be crushedbatch-wisein the Jaw Crusher BB 600.

Retsch is the leading solution provider for size reduction and particle sizing technology with subsidiaries in the US, China, Japan, India, South Africa, France, Italy, Benelux, Russia, UK and Thailand and an export share of 80%.

Retschs philosophy is based on customer orientation and leading edge technology. This is reflected in instruments whose high-quality components are designed for perfect interaction. Retsch products not only guarantee representative and reproducible results for grinding and particle analysis but also allow for easy and comfortable operation.