The double roller crusher is mainly used for the crushing of medium or
lower-hardness mines and rocks with medium or lower rigidity in the trade of
cement, metallurgy, chemical industry, electric power, coal and other
industrial. The crushing materials include limestone, slag, coke and
coal.
Working Principles:
The double roller crusher uses
compression, with two rolls rotating around a shaft, towards the gap between the
rolls. The gap between the rolls is set to the size of product required, with
the realization that the largest feeding 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. The two rolls force the particle between their rotating
surface into the ever smaller gap area, and it fractures from the compressive
forces presented by the rotating rolls.
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