RCT (RCTG) series permanent magnet drum, also known as magnetic pulley or dry bulk magnetic separator. It uses high-performance hard magnetic materials internally to form a composite magnetic system. It has the characteristics of high magnetic field strength, large depth, simple structure, convenient use, no maintenance required, no power consumption, and long-term use without demagnetization. It can be used for iron selection in industries such as cement, magnetic separation, mining, steel, chemical, refractory materials, and waste disposal. It can be used in conjunction with DT-75 and AD-80 universal fixed belt conveyors instead of driving or driven wheels, and can also be used in conjunction with specialized belt conveyors. Specially suitable for continuous automatic iron removal of steel slag, slag, and water slag.