... .3 - 0.02 mm thin materials of iron ore, ilmenite, chromite, pyrite, zircon, rutile, Brief introduction about the sprial chute, pls ... .3 - 0.02 mm thin materials of iron ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, P B ore, tungsten ore, tin ... as other non-ferrous metals. Precious metals and non-metallic mineral with the proportion differences. Advantage of sprial chuteThe process of ...