Series CTS/CTN/CTB Permanent Magnetic Drum Separators has two structures that are rotary type and stationary type. The stationary type separates the wet fine magnetic substances or removes the magnetic substances from the non-magnetic materials. When the thick liquid flows into magnetic area, weak-magnetic and non-magnetic materials are eliminated after separating; the strong-magnetic mineral is adsorbed on the surface of drum and then it is eliminated as rotating. The rotary type separates the dry fine magnetic substances, and the rolling frequency of magnetic mineral is much higher than normal separators because of high-speed revolution. The magnetic and non-magnetic mineral is eliminated from each throat after separating. It is suitable to choose mineral, which has particle size from 0.6mm to 6mm.