Product Knowledge

Roll crusher

With the arrival of the blossom flower and warmly spring, Chinese infrastructure construction is in full swing. An increasing demand for all kinds of building materials, the processing equipment crusher will occupy a very important position and become the backbone industry. As one of the most widely used equipment in mining machinery, roll crusher has developing potential in the industry.

Roll Crushers are compression type crushers, and are once widely used in mining. They have, within the last 10 or so years, fallen into dis-favor among mining and processing companies. The probable reason is because the large mines require very large crushed product output with minimal cost, makes the roll crusher uncompetitive. The double roll crusher is 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.

Roll crushers have a theoretical MAXIMUM reduction ratio of 4:1. If a 2 inch particle is fed to the roll crusher the absolute smallest size one could expect from the crusher is 1/2 inch. Roll crushers will only crush material down to a minimum particle size of about 10 Mesh (2 mm). A teeth roll crusher uses 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 largest feed particle can only be 4 times the gap dimension.

As the roller is smooth, roll crusher is not only able to crush stone, but also grind materials. When the material into the crushing chamber, the materials suffer gnaw force from rotating rollers of the machine. Material is forced to go through gap between the two rollers, squeezed and cut grinded, the material begins to fragmentation. And then small particles go through the gap of two rollers along the tangent of the roller rotation, discharged from the machine. When the particulate material is over the gap, they will continue to be broken until into small particles and discharge them.

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