crusher roll material

roll crusher with stable performance | fote machinery

roll crusher with stable performance | fote machinery

Applied materials: coal, pebble, limestone, dolomite, granite, construction waste, pebbles, glass, cement clinker, basalt, iron ore, quartz stone, coal gangue, etc. Its advantages: high capacity, ability to handle wet, sticky feeds.

Roll crusher, as one of the most economical and practical crushers, is designed to handle the first and second crushing of friable minerals and stones such as coal, clay, coal gangue, limestone, slag, cement clinkers, and shale, etc.

According to the number of rollers, the FTM roll crushers can be divided into three types: single roll crusher, double-roll crusher, and multi-roll crusher. And the most common one is double-roll crusher.

Roll crusher is applied more widely than other crushers because of its small volume and cheap price. With the adjustable discharging system, it can be used flexibly in coarse and fine crushing processes of the industries such as cement, chemical engineering, electricity, mining, metallurgy, building materials, and others.

Roll crushers can adjust the wedge device between rollers to control the feed and discharge size of the machine. Also, it is equipped with a spring device to protect the crushing machine and avoid shutdown caused by overload and iron passing.

When the adjustable bolt pulls the wedge upward, the wedge pushes the movable roller away from the fixed wheel, then the gap between the two rollers becomes larger, and the discharge port becomes larger, and vice versa.

The gasket device adjusts the size of the discharge by increasing or decreasing the thickness of the gasket. When the gasket is added, the gap between the two rollers becomes larger, and vice versa.

The unique structure of rollers makes selective crushing of the roll crushing equipment. Since minerals fed are crushed along its internal friable crack, the finished products are uniform with the cube shape.

The minerals are crushed under the force of rollers and machine body, and ores smaller than the gap between roller and machine frame (of single roll crusher) or roller (of multi-roll crusher) will pass directly without repeated crushing.

With the supporting CPU, operators can control roll crushing machines and monitor gaps between rollers, and clean up the crushing cavity through the central control room, which will help save energy of 30% to 50%.

The main working parts of the roller crusher is the cylindrical rollers. The rollers are supported by the fixed and movable bearings, and they are relatively rotating which are driven by the motor. The materials are crushed by the friction of the rotating rollers, and the finished products are discharged from the gap of the rollers.

The spring is used to balance the pressure generated between the rolls. If there are non-crushed materials falling between the two rollers, the compression spring of bearings can be pushed to make a large gap so that non-crushed materials can be discharged immediately.

The quality of the crushers has a great impact on its price. The high-quality equipment will cost more in terms of workmanship, technology, materials, etc. Meanwhile, it will have a long service life, low failure rate, and better performance, and bring more profit to investors.

In 2019, Fote has exported a total of 39 roll crushers to India, Indonesia, Zimbabwe, Vietnam, South Africa, the United States, Pakistan, the Philippines and other countries, mainly for coal, bentonite, rare earth ore, limestone, aluminum, manganese and others.

Exports of mining machinery have been booming in recent years and Fote has already opened markets in Africa, Southeast Asia, etc. Fote Heavy Machinery has supported foreign customers with low-price and high-quality roll crushing equipment, which has been popular among the majority of customers.

In recent years, the Indonesian government has taken actions to improve its infrastructure and promote economic development. As a result, Indonesia's demand for crushers has increased significantly.

The roll crusher produced by Fote has fine finished products and the best effect on sand making for river pebble. Due to its good finished product size, low powder content and low price, it is widely favored by Indonesian customers.

Firstly, Fote Heavy Machinery is a professional manufacturer of roller crushers. In order to improve the company's comprehensive strength, Fote has introduced international first-class production lines on the basis of original techniques.

Secondly, FTM produces various types of crushing equipment that is suitable for crushing, sand making and milling hundreds of minerals, and ensures excellent quality, good performance and low price.

Thirdly, Fote has provided patient and prudential after-sales service and all-round consideration for customers, and actively created high-tech crushing equipment to take the leading position in the international market.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

what are the differences between 7 types of crushers? | fote machinery

what are the differences between 7 types of crushers? | fote machinery

Jaw crusher is a compression type of crushing machine. The flywheel works together with eccentric shaft and toggle plate provides a motion which pushing moveable jaw plate towards stationary jaw dies, and during the process, a compressive force squeezes raw material.

When the size of the material is crushed smaller than the discharging size, it will be discharged from the bottom. Jaw crusher crushes on half-cycle and favors arrested crushing. The fixed jaw crusher foundation needs to be rugged to overcome the working stress.

For gyratory crusher, the outer circle represents the stationary bowl covered by the concave and the inner circle represents the main shaft covered by the mantle. The main shaft rests in the eccentric bushing at the base of the crusher. As the eccentric rotates, the base of the main shaft moves in a circular path around the crusher centerline.

When the gap between the mantle and the concave increases, the ore material is released and falls into the crusher cavity. As the material is getting smaller, it will pass the narrower gap at the bottom and fall through the crusher. Then the discharged material is usually picked up by a feeder or conveyor belt.

Both of them are used in primary crushing process and they do have common points which include that crushing speed is 100 to 200 revolutions per minute, and the crushing is completed by compression force, but they still have their unique features.

If you only want to crush more raw material with more than 1000t/h and no special demands on final particle shape, you can choose gyratory crusher. Because it can be fed with two sides, which greatly reduces crushing time and improve crushing ratio thus saving lots of energy cost.

A jaw crusher can be sectionalized, therefore it is advantageous to install jaw crusher in remote locations, underground. Jaw crusher machine installation cost is relatively higher than gyratory crusher while its investment and maintenance cost is much lower than that of gyratory crusher.

Just like the video shows to us that gyratory crusher is often installed in the hole to make loader trucks directly feed without vibrating feeder. Raw material is fed into the feed opening by two sides, which produces more granite products in short time.

When the size of the material is smaller than that of discharging port, the final product will fall out of the bottom and be sent by the conveyor belt for further crushing. The ultimate mission of primary crusher is done.

Horizontal shaft impact crusher adopts impact force created by high-speed rotating hammer to strike and throw material. Then the crushed material will hit aprons again in the crushing chamber, which is "stone on stone" crushing way.

As a secondary crusher, HSI crusher can process material with a little hardness and abrasive. It is sometimes be used in primary crushing process, but only can process soft material like limestone, gypsum.

When cone crusher works, it uses the force between moveable mantle and stationary bowl liner to crush material. As the material is getting smaller, it keeps moving down along the crushing cavity until being discharged from the discharge opening.

In the beginning, you spend more money on cone crusher than that of impact crusher. But cone crusher does not need maintenance so much because it has hydraulic system to protect the whole machine and has a longer life span.

The wear parts of impact crusher are hammer and aprons. If the machine always processes hard and abrasive material, the crucial parts wear quickly and need maintenance in a short period thus resulting in more money cost on a repair.

The classical size of pebble is 63mm-12mm. The material is very hard to process, leading to piling and land-occupied problems. The customer chose cone crusher which not only solves the problems of land waste but improves productivity by 25%. The success is due to:

This customer knows the physical characteristics of limestone (soft and less abrasive) and his crushing site situation, so he chose a mobile HSI crusher. It can not only produce the ideal cubic finished product but also reduce the closed-loop to finish the product into the final size.

First, the material enters the feed opening along with the high-speed rotating roller drums, then it got crushed by strong compressive forces in the crushing chamber, and ultimately being discharged until its size smaller than the gap between two drums.

The hammer service life depends on the material you process. If you're running abrasive quartz, they'll last somewhere between one to two weeks. The hammers are reversible so you can replace them easily.

Depending on the physical characteristics of raw material, one of the roll crusher types---double roll crusher can provide a reduction ratio with 3:1 in some applications while another type-triple roll crusher 3:1. That makes roll crusher performs also well on hard and abrasive material.

Rotor speed, hammer type and grate configuration can be converted to different applications. They can be used in a variety of applications, including primary and secondary reduction of aggregates and many industrial applications.

Changing the gap can control the product size, shapes, and fineness modulus. Because it can produce high-fineness materials well and cost little, a lot of customers choose roll crusher to make sand.

If there are uncrushable objects, it'll be automatically removed under the action of hydraulic cylinders or springs by increasing the gap between the rollers. The hydraulic system can protect the rollers from damage.

Glass products are common products in our lives, and its recycling rate is 100%. Of the approximately 10 million tons of glass abandoned by Americans, only one-third is recycled, and the rest ends up in landfills.

VSI crusher is generally used for the third or fourth stage crushing after the first and second crushers, which is the final link of aggregate production. It is the best machine to produce manufactured sand even better than a roll crusher.

When raw material falls into the feed hopper, it enters rotor through the central entrance hole and then throwing high-speed rotor at the speed of 60-75m/s. When hitting anvil, it is crushed and comes downwards though the outlet.

For example, good classification according to the required ratio, no organic and soluble compounds that affect the setting time and performance of cement, and it can maintain strength when applied to concrete and asphalt.

To choose the best equipment, you need to do a comprehensive analysis of your projects, such as material characteristics (hardness, strength, humidity), worksite (in the city center or on the mountain, or other places), cost analysis, etc.

Different conditions will result in various solutions. If you need a more detailed analysis tailored to your crushing operation, please contact Fote Company's experts. The company has more than 35 years of design and practical experience, and it helps you to make the best choice.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

four-roll crusher - roll crusher | agico roller crusher machine

four-roll crusher - roll crusher | agico roller crusher machine

Roll crusher, also called roller crusher machine, is a kind of traditional crushing mill, mainly used for the middle and fine processing of raw material applied in cement plant, chemical industry, building materials industry, etc. It is usually classified into three types: single-roll crusher, double-roll crusher and four-roll crusher. The double-roll crusher is the most commonly used one in the factory, but there are still many cases where it is not suitable. While the more efficient and reasonably designed four-roll crusher can bring a better crushing effect. AGICO provides a high-quality four-roll crusher with different capacities. They all have the characteristic of high yield, low noise, and long service life.

Four-roll crusher can be divided into two crushing stages from top to bottom. When working, motors will drive the belt pulleys on both sides of the crusher to rotate the two pairs of rollers. Rollers of the same stage run in the opposite direction and mesh with each other. When materials enter the crusher, the material with smaller particle size will directly pass through the middle clearance of the first pair of rollers into the second stage crushing. The clearance is equivalent to the sieve plate so that materials meeting the requirements of clearance (particle size) can fall automatically. Otherwise, they will be crushed by the rollers in the first crushing stage firstly, and then fall into the second crushing stage. The four rollers all move at a certain differential speed so that each pair of rollers can rub against each other, thus ensuring that materials with different moisture content do not stick or block when crushing. And because of the deceleration movement of the roller, materials are constantly turned over on the roller and crushed at the weakest point, so as to achieve the purpose of quickly crushing with the smallest force.

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

roll crushers | mclanahan

roll crushers | mclanahan

Roll Crushers are designed to handle the primary, secondary and tertiary stage crushing of friable materials such as coal, salt, clay, bauxite, limestone and other minerals of similar characteristics in the mining, power generation and numerous other industries. Roll Crushers are one of the most widely used crushers in the mining industry and have numerous advantages, such as high capacity, low headroom, low horsepower, the ability to handle wet, sticky feeds and the generation of minimum fines while producing a cubical product.

The simplified design gives these units excellent reliability and requires very little maintenance. Roll Crushers are designed with built-in tramp relief that allows for the passing of uncrushable materials while continuing operation and returning to the initial product setting.

Since patenting the first Single Roll Crusher in 1894, McLanahan has become an expert and leader in the industry in the design and manufacture of single and two stage Roll Crushers. The selection process for each application is based on extensive equipment knowledge and a wealth of test data developed in our research lab or through on-site testing.

McLanahan offers belt-driven Roll Crushers in four designs: Single Roll, Double Roll, Triple Roll and Quad Roll Crushers, which provide a substantial return on investment by operating at low cost and maximizing yield by generating minimal fines. The rugged design, which incorporates a fabricated steel base frame lined with replaceable abrasion-resistant steel liners, stands up to the toughest mineral processing applications while providing safe and simple operation, including an automatic tramp relief system to allow uncrushable objects to pass while the crusher remains in operation. These crushers are also versatile, allowing for adjustments in roll speeds and gap settings to meet most any application requirement.

Whether the application requires a single-stage or two-stage crusher, the forces necessary to perform the crushing remain the same: a combination of impact, shear and compression. The impact force occurs as the material enters the crusher and is impacted by the rotating roll. Shear and compression forces occur as the feed material is pulled between the crushing plate and/or crushing rolls.

Depending on the feed size, material is fed into the crushing chamber and encounters a single or a pair of rotating rolls. If a two-stage reduction is required, either a Triple or Quad Roll configuration can be used. In this scenario, the top stage of the crusher performs the primary reduction either by crushing the material between the roll and crushing plate or between a pair of rolls. The material is then fed directly between the two bottom-stage rolls for additional processing.

If a single-stage reduction is required, then depending on the feed-to-product-size ratio of reduction, either a Single or Double Roll Crusher can be selected. Regardless of the crusher type selected, Roll Crushers allow for the material to fracture along naturally occurring cleavage lines, which helps with minimizing fines generation.

Yes, it will. When a wet, sticky feed is fed to a two-stage crusher, you run the risk of plugging the crusher between the top and bottom stages. If a wet, sticky feed is anticipated and the ratio of reduction requires two stages of crushing, it is recommended that two separate single stages be used.

A good rule of thumb is: Single Roll Crushers have a 6:1 ratio of reduction, Double Roll Crushers have a 4:1, Triple Roll Crushers have a 6:1 on the top stage and a 4:1 on the bottom stage, and Quad Roll Crushers have a 4:1 on both the top and bottom stage.

Single Roll Crushers are typically used as primary crushers that provide a crushing ratio of up to 6:1. They crush materials such as ROM coal, mine refuse, shale, slate, gypsum, bauxite, salt, soft shale, etc., while producing minimal fines. Designed with intermeshing roll teeth and a curved crushing plate, they are extremely effective in reducing slabby feeds.

Double Roll Crushers provide a 4:1 reduction ratio. They are typically used as a secondary or tertiary crusher for materials such as ROM coal with refuse, limestone, gypsum, trona, shale, bauxite, oil shale, clean coal, coke, salt, quicklime, burnt lime, glass, kaolin, brick, shale and wet, sticky feeds. Each machine is custom engineered with roll elements and tooth patterns selected depending on theapplication requirements to produce a cubical product with minimal fines.

Triple Roll Crushers are ideal for producers who want to accomplish two stages of reduction in one pass. They can be used in coal, salt, coke, glass, and trona operations, among others. Triple Roll Crushers combine a Single Roll Crusher with a Double Roll Crusher to form a crusher that is capable of achieving a 6:1 reduction ratio in the primary stage and a 4:1 reduction in the secondary stage while producing a cubicle product at high capacity.

Quad Roll Crushers are ideal for producers, including those with preparation plants, who want to accomplish two stages of reduction in one pass. They can be used in coal, salt, lime, pet coke and potash operations, among others. Quad Roll Crushers are capable of achieving a 4:1 reduction ratio before feeding the crushed material to the secondary stage for an additional 4:1 reduction to make the final product.

double roll crushers | mclanahan

double roll crushers | mclanahan

Double Roll Crushers typically follow a primary or secondary crusher and are used for secondary and tertiary reduction of various minerals, such as ROM coal, clean coal, limestone, gypsum, trona, shale, bauxite, oil shale, coke, salt, lime, glass, kaolin, brick, shale and wet, sticky feeds. They are one of the most widely used crushers in the mining industry and have numerous advantages, such as high capacity, low headroom, low horsepower, the ability to handle wet, sticky feeds and the ability to produce a cubical product with minimum fines generation. Roll diameters and widths are dictated by the feed size, product size and capacity. The rule of thumb for the Double Roll Crushers ratio of reduction is 4:1.

The simplified design gives these units excellent reliability and requires very little maintenance. The crushers are designed with built-in tramp relief that allows for the passing of uncrushable objects while remaining in continuous operation and returning to the initial product setting. With a variety of roll surface designs, this crusher is capable of producing a much finer product. Since each machine is custom engineered, roll elements and tooth patterns are selected depending on each unique application.

McLanahan Double Roll Crushers feature slower roll speeds and a larger surface area to add prolonged life to the crushing elements, resulting in less maintenance downtime and decreasing your cost per ton. Double Roll Crushers generate minimum fines while producing a cubical product.

McLanahan Double Roll Crushers are designed for safety and many years of rugged operation. Effective tramp protection against non-crushable material is provided by an automatic spring-and-toggle system. This allows a movable roll to open, pass the material and return to its original setting for continued operation. Hydraulic product size adjustment allows producers to adjust for changes in product size requirements or to compensate for roll wear.

Operating Double Roll Crushers is quite simple. Whether it is a single or dual drive arrangement, the rolls are powered by electric motors and V-belt drive configurations, resulting in reliable and quiet operation. If it is a single drive arrangement, power is transferred from the driven roll to the non-driven opposing roll by an interstage V-belt drive. If it is a dual drive configuration, each roll is powered independently through a motor and V-belt drive.

During normal operation, the material is fed between the crushing rolls. A combination of compression and shear forces created between the opposing rolls reduce the feed material to the desired product size while producing a cubicle product with minimum fines.

McLanahans mechanical tramp relief systems employ a spring-and-toggle mechanism that activates whenever an uncrushable object enters the crushing chamber. Once an excessive force is applied to the movable roll, the toggles break open to allow the uncrushable item to pass. The high torsion springs then close the toggles, returning the movable roll to the previous setting. The crusher continues to operate uninterrupted.

When an uncrushable object, such as metal, roof bolts/timbers, etc., enters the crusher and the force necessary to crush this material is greater than the crushing forces of the crusher, the crusher allows the moveable roll to open and pass the tramp material and then return to its previous setting and remain in operation.

Depending on the customers desired product size and fines consideration, Mineral Sizers or Hammermills could be considered. The reasons people would consider a Roll Crusher over these alternative technologies include lower power requirements, less fines generation and costs.

Black Diamond Double Roll Crushers are the most versatile and popular model of McLanahan Double Roll Crushers. Ideal for secondary and tertiary crushing applications where product requirements drop down to (6mm), Black Diamond Double Roll Crushers are most commonly used to crush clean coal or friable materials with little or no hard refuse. They are available with single or dual V-belt drive.

Heavy-Duty Double Roll Crushers are ideal for the primary, secondary and tertiary crushing of limestone, gypsum, ROM coal, etc. where higher compressive strength material is anticipated. Due to the V-belt drive design, a lower horsepower is required compared to other crushers designed for the same applications.

Shalemaster Double Roll Crushers are driven mechanically with V-belt drives and gear reducers. They offer the same durability as other McLanahan Double Roll Crushers but are designed to handle wet, sticky feeds such as soft shale, kaolin and clay. The Shalemasters special tooth design and differential roll speeds provide optimum performance against plugging and other problems often associated with handling sticky materials.

Typically used as secondary or tertiary crushers, McLanahan Double Roll Crushers provide a 4:1 reduction ratio and can be used following other McLanahan equipment, such as Feeder-Breakers, Rotary Breakers, primary DDC-Sizers, or Single Roll Crushers, when further reduction of primary crushed material is required. Each Double Roll Crusher is selected and engineered for its specific application, thus roll elements and tooth patterns are selected based on the customers unique applications and designed to produce a cubical product with minimal fines.

roll crusher | hrc - hazemag

roll crusher | hrc - hazemag

For industrial beneficiation of primary and secondary raw materials, selection of the most appropriate crushing method plays a key role in the production of specific grain sizes, shapes and surfaces, or to break down multi-component materials.

The selected crusher must conform to todays stringent requirements for processing rocks, ores and coals. Materials to be crushed are becoming more and difficult to process, high throughput capacities are required. High focus is now placed on energy consumption, and the use of energy-efficient roll crushers, with high throughput rates, is becoming increasingly important from an economic and ecological point of view.

Roll Crusher operation is based on the principle of continuous pressure generated between two counter-rotating rolls; allowing uninterrupted crushing, in contrast to the intermittent action of jaw crushers. During operation, the high rotational energy of the crushing rolls and the drive components reduces peak loads, resulting in a more regular level of power consumption.

If non-breakable tramp metal is present in the feed material, it is essential that the crushing gap can open to let the tramp material pass. This is achieved by employing a floating roll, which is mounted in pivoting rocker arms. The rocker arms are supported by the lower housing via hydraulic cylinders. In order to guarantee parallel retraction of the floating roll, a torsion shaft connects the two rocker arms. The rotational reaction of the floating roll allows an almost seamless movement and creates a wide escape path.

HAZEMAG Roll Crusher housings and drive mountings are robustly-designed for heavy-duty applications. They are fitted with easily replaceable wear parts, with removable maintenance hoods below the feed hopper enabling quick and easy exchange of crushing segments.

The drive is assembled on a base frame, which is connected with the roll crusher. The floating roll drive, also supported in pivoting mode, is connected with the floating roll rocker arm by a coupling rod. This ensures that a constant drive belt tension exists during the retraction movement of the floating roll, and during gap adjustment.

The crushing rolls for primary and secondary crushers comprise a polygonal roller body equipped with exchangeable crushing segments. Unique geometry between the roller body and crushing segments, achieves an optimal, form-fitting attachment, allowing them to withstand the high crushing forces. The shape and number of teeth are determined by the respective application.

With the standard PLC control the crushing gap, and therefore the product, can be controlled and monitored from the control room as well as from the switchgear cabinet on the crusher. With this system, the crushing gap can be reduced very easily just by the push of a button to compensate for wear of the crushing tools.

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