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Crushing Ratio

Crusher Reduction Ratio

Reduction ratio: measure of Crusher crushing effects, common reduction ratio of the concept. Crusher's crushing ratio is ratio of raw material particle size and broken product accuracy. It expresses raw materials reduced level after crushing.



Calculation method for crushing ratio

1, Calculate ratio with a maximum size of an item before crushing and broken product largest size: i=Dmax/dmax. Dmax: crushing of material before the largest size; dmax: the largest size after crushing the material.


2, Use crusher feeding mouth effective width and discharging mouth than width: i=0.85B/b. B: crusher feeding mouth width; b: crusher discharging mouth width. 0.85: ensure the effective width biting crusher materials coefficient. Discharging mouth width value: Thick crusher is taken maximum discharging mouth width; Medium crusher is taken the smallest in discharging mouth.

Calculated by this formula for crushing ratio is very easy. In the production of large quantities of materials may not always to be screening analysis, with the way, just know crusher feeding mouth and discharging mouth width, and then can calculate the crusher reduction ratio.


3, Worth pointing out, some crushers' row partical not by discharging mouth size to decide. It can be used this formula: i=Dcp/dcp. Dcp: the average diameter before material crushed; dcp: the average diameter after material crushing. This method calculated crushing ratio, can make a real to reflect broken degree, thus theory research often use it.


Related: Crushing Size

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