1. Ratio of the maximum particle size of the material before crushing to the maximum particle size of the product after crushing

i=Dmax/dmax      (Dmax—-Maximum particle size of the material before crushing,  dmax—-maximum particle size of the product after crushing)

2. Ratio of effective width of the feed port of the crusher to the width of the discharge opening

i=0.85B/b       (B—–Crusher feed port width,  b—–Crusher discharge opening width,   0.85—-Ensure that the crusher bites the effective width of the material.)

 The value of the width of the discharge opening: the coarse discharge machine takes the maximum discharge opening width; the middle crusher takes the minimum discharge opening width.

3.  i=Dcp/dcp 

(Dcp—the average diameter of the material before crushing;   dcp—the average diameter of the material after crushing)

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