what speed / rpm jaw crushers should do - ® Mobile Crushing & Screening Plants Brochure ...
please call or write mail consultation. grinding abrasive machining •the oldest machining process "abrasive shaping"at the beginning of "stone era". •free sand was applied between two moving parts to remove material and shape the stone ...Primary crushers are designed so that the maximum size that can be presented to the crusher is approximately 80% of the gape. Jaw crushers are operated to produce a size reduction ratio between 4 :1 and 9 : 1. Gyratory crushers can produce size reduction ratios over a somewhat larger range of 3 :1 to 10 :1.jaw crusher and become the primary cruhsing equipemnt .When the anti-pressure is over the 150 Mpa,
