COAL PULVERIZER DESIGN UPGRADES TO MEET THE .
Coal Ball Mill. 2019-10-8coal ball mill is the equipment used for grinding and drying coal with different hardnesst is mainly composed of feeding device, principal axis, rotating part, transmission part, discharging part, high-pressure starting device and lubrication systemt also widely used to bre.High pressure grinding rolls (HPGR) are used for size reduction or rocks and ores. They compress the feed material between two rotating rollers, one of which is in a fixed position and another roller that is floating. The two rotating rollers generate such a high pressure that it grinds the feed material to the desired smaller grain size.