magnetic filter: 1. Simple Structure 2. High Processing Capacity 3. Easy-to-operate 4. Easy to Maintain Out side-drum vacuum filter is widely used in ore-processing, metallurgical industry, chemical plant, paper industry and etc, for dewatering floatation concentrates of non ferrous metals (such as copper, zinc, lead, nickel and etc,) and concentrates of non metal (such as sulphur, phosphorus, ...