High pressure grinding rolls. A high pressure grinding roll, often referred to as HPGRs or roller press, consists out of two rollers with the same dimensions, which are rotating against each other with the same circumferential speed. The special feeding of bulk material through a hopper leads to a material bed between the two rollers.
High pressure grinding rolls (HPGR) The HRC™ takes HPGR technology to the next level by providing a simple yet robust design that maximizes efficiency, availability and reliability. High pressure grinding with a focus on efficiency. Features.