... benefit; 3.wide range of applicable. description Primary machine is mainly used for lean ore enrichment, also called ... ore grade is 3%-5%, use of the machine can be thrown to a primary election, more than ... raises economic benefits.This machine is optional, lean ore tailings, river sand, sand, slag, fly ash and so on, have ... capacity power mm mt t/h kw primary machine 6150 600 1500 1 150-250 20-40 ...