coal jaw crusher purpose

The Purpose Of Jaw Crushers - PurposeOf As a primary crushing machine, the jaw crusher is used for crushing rocks or ores to a manageable size. In general, a jaw crusher is machine that breaks various hard materials into smaller pieces for further processing. The jaw crushers are most commonly seen in mining or disposal sites. Crusher - Coal Testing & Laboratory Equipment 91-6900-01Retsch Jaw Crusher BB 200 with Manganese Steel Breaking Jaws and Stainless Steel Wearing Plates, 220 V 60 Hz, Verder Scientific, ... Coal/Coke Laboratory. Water Testing. General Laboratory. Microgripper. Request a Quote. Request a Catalog. Catalog #/Cross Reference. Manufacturers. Literature. coal jaw crusher purpose - truelights A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back ...    Read More