ABB supplies GMD and HPGR technology to Toquepala ...
The order was booked in Q4, 2015. For the expansion project, which aims to double the mine''s concentrator milling capacity from 60,000 to 120,000 t/d, ABB is supplying two 25 ft gearless mill drive systems (GMD) of 15 MW and two complete high pressure grinding rolls (HPGR) drive systems of 2 .