Roll crusher is available for ore dressing, chemical, cement, refractories, abrasive, building materials industries, finely crushing all kinds of ore and rock below the high, medium hardness,especially in the building materials industry to produce melon meters stone and green bean products etc, and have the more excellent effect than general stave machinery , in recent years, also widely used in crushing steel grit industries.
Roll crusher (http://www.sell-crusher.com/pro/p12.html) is to use two sets of alone transmission roller with squash and grinding strength generated by relative rotation to broken material. When the material into the machines crushing chamber , materials by the force function of rotating roller, let the material being forced to through two roller clearance, and by the cutting and grinding of roller , material namely began to fracture, the small particles broken down along the roller rotation direction of tangent, through two roller clearance, thrown to machine below, the big particle materials more than the clearance , , continue to be broken into granules and back out.
Crushing is entirely by compression of material between the surfaces of the roll faces. Although crushing rolls fitted with corrugated shells have been used in special applications they remain, essentially, a fine reduction crusher used in the secondary or tertiary reduction stage. One disadvantage of the double roll is that one set of rollers delivers product to the conveyor in the opposite direction to the belt travel. A curved chute can be fitted to reduce the effect but if the feed material is sticky or contains a percentage of clay then a build up of material in the chute can occur leading to clogging. The sticky material can also form boulders in the dead space between the rollers which ‘ride’ on them and become such a size that when eventually discharged cause damage to the conveyor belts.
Double Roll Crusher is a kind of roller crusher that has two rollers. The crushing action of double roll crusher takes place between the two rolls. On large machines both rolls can be mounted on slides which can be adjusted to give the correct size product. In special cases these machines can b e supplied with rotors running at different circumferential speeds. The shearing force due to this increases the comminuting effect. Crushers with medium rotor speeds have proved suitable for dealing with materials that are difficult to comminute.