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secondary crusher in coal mining

Our leading products have crushing equipment, sand making equipment, mobile crusher;The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.
Through the first series of experiments the effect of primary and secondary breakage processes on both product size and airborne dust generation was examined through a second series of experiments the effect of coal rank properties on product size and airborne dust generation was studied using a uniform crushing process with secondary breakage.

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