Usage and Application Roller crusher is widely used for fine or superfine crushing in the industries of mining, construction materials, metallurgy, chemical industries and so on.Roll crusher can crush all kinds of materials under middle hardness, such as ore, rock, coke, coal, clinker, ceramic raw materials, slag, refractory materials, chemical materials and so on.
Stone crushers are also called rock breakers, which are essential equipments in mining crushing process. The major types of stone crusher machines are jaw crusher, impact crusher, cone crusher, hammer crusher, roll crusher, compound crusher, etc.
HuaHong Machinery is one of the biggest Crusher manufacturers in China, its main products are Roll Crusher, Hammer Crusher, Impact Crusher, Jaw Crusher, Stone Crusher, Cone Crusher, Stone Crushing Line, Sand Making Machine, Raymond Mill, Ball Mill, Dryer, Etc.
8 x 10 Large Jaw Crusher, welded steel construction, feed chute, cast manganese corrugated jaw plates, cast pitman, cast flywheels, Abrasion Resistant cheek plates, roller bearings, toggle, manual toggle adjustment, 10 HP motor, v-belt drive, OSHA type.
A heavy and rigid cast-iron frame supports the two-roll assemblies, each of which comprises a shaft, a roll centre, and a shell of wear-resisting metal, such as high-carbon steel, or manganese steel. Each roll is independently driven by a flywheel type, flat-belt pulley, or V-belt sheave. One of the two pairs of bearings is arranged to slide horizontally on the side frames.
These movable bearings are spring-loaded to provide a safety relief for excessive pressures, such as are caused by tramp iron, etc. They are drawn up against locating shims which establish the spacing between roll faces discharge setting, and are held in that position by the springs, which are pre-set to the working pressure for which the particular machine is designed. This working pressure may vary fromas low as90kiloper linear centimetre of roll face, for light-duty rolls, to as high as 5.3 tonne per centimetre of roll face for extra-heavy-duty rolls.
So long as flat belts were the established driving medium, it was customary to equip the fixed roll with a large pulley, and the movable or spring roll with a smaller one generally one-half the diameter of the large one. The large pulley was designed to carry the full amount of power needed to drive both rolls, which of course relegated the smaller one to the status of an idling pulley its sole purpose was to bring the spring roll up to speed, and to maintain that speed during idling periods.
There was a logical purpose behind this arrangement. Because of the variables involved, it would be the exception, rather than the rule, if both roll faces ran at exactly the same speed under no-load conditions, and if this slip between faces continued when the rolls were loaded, wear on the shell faces would be greatly accelerated. The large-and- small pulley set-up permits the material to gear the shell faces together so that the speeds are the same, and any compensation that might be required in surface speeds is taken care of by belt slippage on the small pulley.
When the multiple V-belt drive came into its own, and line-shaft transmission was replaced by individual motor drives, an improved driving arrangement for crushing rolls was developed. V-belt sheaves of equal size were installed on both rolls, and the load was divided between two motors. With this system, any speed compensation which may be required is taken care of automatically by increased slip of whichever motor happens to be driving the roll with highest no-load peripheral speed.
Although crushing rolls fitted with corrugated shells have been used in some special applications for secondary crushing, they are essentially a fine-reduction crusher, and as such are always fitted with smooth-face shells. The maximum one-way dimension of feed size is established by that point at which the rolls will nip the feed. This, in turn, depends upon the coefficient of friction of the material, the diameter of the rolls, and the spacing between roll faces.
The diagram in Figure 3 shows the method used in calculating maximum feed size for any diameter of rolls the accompanying table gives a listing of feed sizes for standard diameters. These figures are based upon zero roll spacing therefore the distance between faces i.e., the discharge spacing to be used should be added to them to obtain the maximum feed size for any combination of roll diameter and setting. The calculations are predicated on a coefficient of friction of 0.3, which is safe for most materials, provided that the surface speed of the rolls is not too high.
The theoretical capacity of crushing rolls is arrived at simply by calculating the volume of the ribbon whose cross section is the area of the discharge opening, and whose length is the peripheral speed of the roll faces per unit of time. The formula, for material weighing 100 lb per ft3, is.
Applicable Materials Pebble, calcite, granite, quartz, concrete, dolomite, bluestone, iron ore, limestone, iron ore, coal gangue, construction waste, ferrosilicon, basalt, sandstone, rocks, ore, glass, cement clinker and some metal.
Stone crusher or rock crusher is widely used in mining, smelting, building materials, road, railway, water conservancy, chemical industry, etc. Fote stone crusher uses high-quality composite wear-resistant materials that have strong impact resistance, crack resistance and excellent abrasion resistance, which can be applied to strong vibration and shock working conditions.nbsp.
Currently, the commonly used stone crushing machines are jaw crusher, impact crusher, hammer crusher, roll crusher, compound crusher, etc.
Jaw crusher is mainly applied to coarse, medium and fine crushing of all kinds of ores and rocks whose comprehensive strength is 147-245Mpa, which has such advantages as big reduction ratio, uniform particle size, simple structure, reliable work, convenient maintenance, low operational cost, etc.
Impact crusher is able to crush many kinds of materials with maximum feed size less than 500mm and crushing strength less than 360 Mpa.nbspRelying on its excellent performance, impact crusher nbspis widely used in expressway construction, hydraulic engineering, construction, mining and other sectors.
Hammer crusher is one of the main equipment used for medium and fine crushing of limestone, coal, granite, gypsum, alum, salt and other brittle materials with medium or under medium hardness. It has the features of big reduction ratio, high production capacity, even product granularity, etc.
Roll crusher is suitable for crushing materials with medium hardness, such as limestone, slag, coke, brick, etc. in cement, chemical industry, electric power, building materials, refractory materials and other industrial sectors.
Fote Machinery is a famous stone crusher manufacture in China, in addition to stone crusher for sale, we also have other mining machines, such as ore beneficiation equipment, powder making machine, building materials equipment, complete set of solutions, etc. If you want to know more information about stone crusher price, please leave us a message below or send us emails to infosinoftm.com, we will contact you as soon as possible, thank you.
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Introduction of roller crusher. Roll crusher is applicableto the medium and fine crushing of the brittle bulk materials in industry of cement,chemical, electric power, mining, metallurgy, building materials, refractorymaterials, coal and other industries. The roller crusher can also be used for crushingof the materials with compression strength less than 160Mpa.
Jaw Crushers reduce unusually hard, tough andor abrasive rock, as well as ferroalloys and glass, which cause excessive wear to other types of crushers. LEARN MORE. Single Roll Crushers by Pennsylvania Crusher Brand. Our single roll crushers employ three distinct methods for reducing coal, petroleum coke, lignite and other friable materials.
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