... 0.02mm, such as iron ore, ilmenite, chromite, pyrite, azorite, rutile, monazite, phosphorite, oxide ore, tin ore, tantalum ore, niobium ore and other nonferrous metals ... along the rotary bevel with flow speed, so that ore and sand can be divided under rotary steam and centrifugal force ... , and final sand flows to final sand hopper and coveyed out by pipe to sand pond. Then remove the sand pump. That ...