best selling spiral chute 1.simple structure 2.easy maintain 3.high quality 4.used widely best selling spiral chute This applies to sorting size 0.3 -0.02 mm thin materials of iron ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, P B ore, tungsten ore, tin mine, tantalum and niobium mine, as well as other non-ferrous metals. Precious metals and non-metallic mineral with the proportion ...