## estimate jaw crusher capacity

My friend Alex the SAG Mill Expert, says this equation you picked up doesnt look right.The numerator is calculating the volume of one swing of a jaw, times thedensity of material in the chamber, times the number of cycles perminute. This should give you the mass of material crushed per minute.

The example youve given is missing information needed to calculate theA term it doesnt tell you the height of the crushing chamber. The two measurements youve got are the top opening width and top openinglength; A should be the jaw throw (not given) times the crushing chamber height (also not given).

Tables hereincontain information that is typical of output from crushers discussed above. The capacities are based on the crusher receiving full, continuous feed of clean, dry, friable stone weighing 100 lb/cu ft.

These capacity tables show several significant differences between the two common types of primary crushers. A jaw crusher has a wider range of settingsgenerally, a maximum of two to three times the smallest setting. The tables also show that for a comparable maximum size of feed and setting, a gyratory crusher has a much greater capacity than a jaw crusher. Thegyratory crusher obtains this advantage only at the cost of greater power to drive the crusher.

The selection of an appropriate primary crusher for a given use has to be based on a consideration of several factors. These are not limited to the design features of the crusher. If the feed is blasted rock from a quarry, the size and method of handling the feed influence crusher selection. For instance, a power shovel is limited by the dimensions of the dipper in the maximum size of rock it can handle well. It may be that the bucket of a 1- yd shovel would be too small to load the maximum size rock allowed in a jaw crusher with a 42-in. opening.

If a 60-in. gyratory crusher is to process material from a quarry where a shovel loads the raw material, the shovel would probably have to have a dipper capacity of at least 5 cu yd to be compatible. It may be more economical to change the blasting pattern to produce larger rock that can be handled by a larger loader-hauler combination and still fit in the primary crusher. Generally, a large reduction ratio will be required of the primary crusher.

If gravel has relatively small maximum particle sizes, a large feed opening is not needed. It may be more economical to feed all of the pit-run material into the primary crusher rather than to remove the part that is already smaller than the crusher setting. That calls for a crusher with a higher capacity. There are many feasible solutions to the crusher selection problem, so the aggregate producer must select crushers with total operations and economics in mind.The selection of reduction crushers is also a complex problem.

The economic selection of any particular crusher depends on the ability of the crusher to handle the maximum size of feed, reducing this at the highest possible reduction ratio and least cost for the original installation, maintenance, and power. For any particular aggregate production plant, it is advisable to make preliminary determinations of the types of crushers needed. If most of the feed is coarse and stage crushing is required, primary crushers that meet the requirements of reduction and economy and have straight crushing surfaces may be most economical.

Where only a very small percentage of the feed approaches the size of the feed opening of the crusher,nonchoking crushing surfaces in a high capacity crusher may be advisable for the sake of economy. If the plant requires several stages, and several different types of crushers could be used for each stage, the costs of each feasible combination must be analyzed to find the crusher plant with the least total cost.

## jaw crushers | glen mills, inc

The Jaw Crusher BB 200 is used for therapid, effectivecrushingand pre-crushing ofmedium-hard, hard, brittle and tough materials.Itsvariety of materialsoffered, including heavy-metal free steel, itsefficiency and safetymakes it ideal for sample preparation in laboratories and industrial plants.

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

The Jaw Crusher BB 300 is used for therapid, effectivecrushingand pre-crushing ofmedium-hard, hard, brittle and tough materials.Its variety of materials offered, including heavy-metal free steel and itsefficiency and safetymakes the BB 300 ideal for sample preparation in laboratories and industrial plants.

For small amounts of sample the Jaw Crusher BB 300 can be usedbatch-wise; for larger amounts it can be operatedcontinuously. 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.

TheJaw Crusher BB 50 has been specially designed for sample preparation in the laboratory. It is used for therapid, effectivecrushingand pre-crushing ofmedium-hard, hard, brittle and tough materials.

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 500 is used forrapid, 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.

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.

## jaw crusher

The produce is used for coarse-crushing of medium hard material which is of lower moisture content and big block and it is the common equipment in the production line which uses shale and coal gangue as raw material

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## jaw crusher bb 100 - retsch - efficient and safe crushing

The Jaw Crusher BB 100 is used for the rapid, effectivecrushing 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.

alloys, basalt, cement clinker, ceramics, chamotte, coal, coke, construction materials, feldspar, glass, granite, minerals, ores, oxide ceramics, quartz, rocks, silicon, slag, ...continue to application database

The BB 100 is a robust and powerful forced-feed Jaw Crusher. The feed material passes through the no-rebound hopper and enters the crushing chamber. Size reduction takes place in the wedgeshaped area between the fixed crushing arm and one moved by an eccentric drive shaft. The elliptical motion crushes the sample which then falls under gravity. As soon as the sample is smaller than the discharge gap width, it falls into a removable collector within the Jaw Crusher. The continuous gap width setting with scale ensures optimum size reduction in accordance with the set gap width.

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