Ball mill feeding speed: After adjusting the working parameters of the ball mill to the mining machine, the ore feeding amount of the grinding machine should be kept constant or change within a narrow range. Generally, the wet ball mill is mostly used for control. The amount of water ensures the proper grinding concentration and fineness of the ball mill. The feed of the ball mill must be uniform. With the increase of the ore-feeding speed, the content of qualified fractions in the ball mill grinding machine is reduced, while the absolute number of qualified pellets produced by the ball mill is increasing, the power consumption is reduced, and the grinding efficiency of the ball mill is significantly improved. When the ore properties change, the working conditions of the ball mill grinding machine should be adjusted in time to establish a balance.