Size Reduction Equipment
A primary crusher operates on run of mine material accepting anything that comes from the mine face and breaking into 150250 mm (610 in). A Secondary crusher reduces these lumps into 6 mm (1/4 in). Grinders reduce crushed feed to powders The product from a intermediate grinder might pass a 40mesh screen Most of the product from a fine grinder would pass a 200 mesh screen with 74 micron ...