Double Roll Crusher for Sale @india
Double Roll Crusher
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, having compressive strengths up to 1500 kg/cm 2 . These crushers are successful in the reduction of moist sticky materials. They are especially suitable for crushing limestone, marl, clay and shale. Roller crushers are nearly always the first choice when there is a need to reduce wet and very sticky or plastic materials. The term ‘Crushing Rolls’ applies to the double roll machine with smooth or corrugated shells. 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.
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