A Roller Crusher crushes using compression, with two rolls rotating about a shaft, towards the gap between the rolls. The gap between the rolls is set to the size of product desired, with the realization that the prime feed particle can only be 4 times the gap dimension. The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raise forms on the face of the roll.
Roller Crushers are compression type crushers, and were once widely used in mining. They have, within the last 10 or so years, fallen into dis-favor among mining and dispensation companies. The probable reason is because the large mines require very large crushed product output with minimal cost, makes the roll crusher uncompetitive. The roll crushers are not nearly as productive as cone crushers, with respect to volume, and they do have a little higher maintenance associated with them. Roll crushers do, however, give a very close product size distribution, and if the ore is not too abrasive, they do not have high maintenance costs.
Our organization designs and manufactures a quality range of Roller Crusher that is used as secondary or tertiary crusher for smaller fraction. The range is fabricated using superior quality raw material and is reckoned for its higher capacity with less fines generation, uniform cubical output product size, smooth operation and low maintenance.