Primary Crusher Selection & Design - 911 MetallurgistMar 17, 2017 . How you select your primary crusher will be based on factors like moisture content, maximum rock lump size, material density SG, abrasion index, degradability and it being prone to dusting or not. The crusher capacities given by manufacturers are typically in tons of 2,000 lbs. and are based on crushing.sizer crusher design,UntitledDouble Roll Crusher. GIIIISII'I'EBII I'll'l'. “II. More detail please visit us .kohinoorjawcrushers. Page 2. FEED MATERIALS. FIELDS OF APPLICATION. Lignite, coal. soft to medium-hard rock, different. Double Roll Sizer are used for primary and secon- types of ore . simple, very compact, sturdy design the bearings of.