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High Pressure Grinding Roller Crusher

High-pressure grinding rolls hpgrs have struggled for acceptance into the hard-rock mining sector.Critical hpgr parameters hpgr roll diameters typically range from 0.5 m to 2.8 m, depending on the supplies, and roll widths vary from 0.2 m to 1.8 m.The aspect ratio of the rolls also varies as a function of manufacturer.Typical hpgr throughput rates range from 20 to 3,000 tph, with.