A methodology to predict the HPGR operational gap by using piston press ...
WEBJun 1, 2021 · This machine has rollers with Hexadur surface and a diameter of 750 mm and a width of 220 mm, a hydraulic system capable of applying a pressing force of up to 8 N/mm 2, a variable speed drive, and data logging capabilities to record power draw, operating gap, roller speed, and operating pressure. Depending on the mineral .