Performance advantages: Compared with conventional manganese steel liner, with a long life, light weight, thin thickness and other characteristics, both provincial ball, energy-saving, low noise, work rate, but without bolts, easy installation, no leakage pulp, work environment well, greatly reducing the labor intensity, less accidents, less spare parts consumption. According to the production-proven, used on a large ball mill magnetic liner 4-6 times longer life than its manganese steel liner, its overall efficiency is very significant, is favorable metallurgical and mining efficiency saving measures, welcomed by the scene.