— Empty Cell: Gyratory crusher: Primary: 1500: 200–300: 1200–over 5000: Jaw crusher: Primary: 1400: 200–300: ... Line 4 undergoes primary jaw crushing, secondary and tertiary cone crushing, dry HPGR and ball milling before wet magnetic separation and filtration. Finally, lines 5, 6, ... Ball mills are filled up to 40% with steel balls (with ...