The double roller crusher is mainly used for the crushing of medium orlower-hardness mines and rocks with medium or lower rigidity in thetrade of cement, metallurgy, chemical industry, electric power, coal andother industrial. The crushing materials include limestone, slag, cokeand coal.
  Working Principles:
  The double roller crusheruses compression, with two rolls rotating around a shaft, towards thegap between the rolls. The gap between the rolls is set to the size ofproduct required, with the realization that the largest feeding particlecan only be 4 times the gap dimension. The particles are drawn into thegap between the rolls by their rotating motion and a friction angleformed between the rolls and the particle, called the nip angle. The tworolls force the particle between their rotating surface into the eversmaller gap area, and it fractures from the compressive forces presentedby the rotating rolls.
  
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