Why HPGRs are revolutionising mill circuits
Aug 07, 2019· Starting in the 1980''s, HPGR was first successfully implemented in the cement industry and is now used across a wide range of mining applications. Today, there are more than 200 machines operating in the mining industry around the globe, on more than 150 sites. These energyefficient grinding machines are mostly used for processing iron, gold, copper and diamond ores, although .