Crusher Guide Mining and Rock Technology
4 Manufactured sand is typically smaller than 5 often 2 mm 5 Typical abrasive rocks are Granite Quartzite Diorite Trap rock Basalt Gneiss Abrasion index above 6 Typical non abrasive rock is clean Limestone Marble Abrasion Index below 7 fines or 0 X mm material is normally below 2 mm