... , oxide ore, tin ore, tantalum ore, niobium ore and other nonferrous metals with distinct specific gravity difference, and rare matels and nonmetal minerals. The ... formed along the rotary bevel with flow speed, so that ore and sand can be divided under rotary steam and centrifugal ... specific gravity, grain size and shape. Next, final ore flows to the final ore hopper and coveyed out by pipe and picked ...