... than 17%.The gold and sliver is seperated in chemical way.Other epoxy resin,Bakelite and fiberglass are recycled to be ... rotary screen, rotary screen have four layers, four discharge opening: one 20mm ,two 40mm,three 60mm ,four 80mm . 20mm and 40mm size ... . Description:1.Put metal or mixing material on belt conveyor , magnetic roller has been mounted on the head of belt conveyor , when ...