ball mill classification Henan Deya Machinery Co. Ltd.
Jul 03, 2012 Jul 03, 2012 Ball Mill Classification. Ball mills are also classified by the nature of the discharge. They may be simple trunnion over-flow mills, operated in open or closed circuit, or grate discharge (low-level discharge) mills. The latter type is fitted with discharge grates between the cylindrical mill body and the discharge trunnion. The pulp can flow ...