... /h0.25.21.5mIt is used to process iron, stannum, tungsten, tantalum, niobium, gold ore, colliery, monazite, rutile and Zircon of ... .3 and 0.02mm, and the other metals nonmetal minerals with enough proportion deviation. The quality guarantee is 12 months after ... can be replaced based on favorable price. spiral chute for tungsten, ilmenite