what is coal preparation
It deals with taking raw coal and producing a saleable product that rtEet:s cnntract specifications by raxoving the i_rtpurities. Coal preparation, as corm-only pracâ ticed today, is carried out in water based processes, and rrnkes heavy use of slurry transport principles and proÅdures. Coal preparation is regarded as the processing of raw coal to yield marketable products and waste (refuse) by rreans that do not destroy the physical and chemical identity Of the coal. Coal is a very heterogeneous up Of different types and varying amounts of mineral ratter. As mined, it cr)ntains all the layers of mal and irrpuriâ