Grinding ball for ball mill (Ф20-Ф100)
The ball mill is the key equipment for grinding the material after it is crushed. The steel ball is used as the grinding medium to further grind the material to achieve a certain fineness requirement and achieve a better grinding effect.
The ball mill is the key equipment for grinding the material after it is crushed. The steel ball is used as the grinding medium to further grind the material to achieve a certain fineness requirement and achieve a better grinding effect. Most mines use overflow ball mills. Materials such as ores follow the rotation of the cylinder and the movement of the grinding medium. After being crushed, they gradually flow to the discharge end, and finally overflow from the hollow journal of the discharge end. Therefore, compared with the semi-autogenous mill, the diameter of the mill is reduced, the size of the ore supply is small, the size of the balls used is reduced, the operating speed of the ball mill is relatively small, and the filling rate is high. Mainly, the purpose of crushing and grinding is achieved through the impact and grinding of multiple steel balls on the ore. Materials and steel balls that do not reach a certain size cannot be discharged from the mill, which requires steel balls to have high wear resistance. However, due to the complex working conditions in the mill, when the steel ball wears to a smaller diameter, it is prone to deformation and out-of-round and other inevitable phenomena, and the grinding effect becomes poor. If the hardness is too high, it cannot disappear quickly and occupies part of the effective filling of the mill. rate, resulting in energy waste, which is detrimental to energy saving and consumption reduction in mines.
After in-depth discussion and analysis, Goldpro New Materials Co., Ltd. has developed special steel balls for ball mills through the analysis and research of the failure mechanism of steel balls, combined with the actual working conditions of ball mills, and through the research of steel ball materials and supporting heat treatment processes. In the effective use volume, the hardness is high and the wear resistance is good, and the hardness is appropriately reduced when the diameter is small, so as to ensure that the grinding effect is not reduced and the waste of the effective filling rate in the ball mill is reduced, thereby improving the grinding efficiency and contributing to mines. Through the actual use in a large-scale foreign mine, the wear of steel balls has been reduced by 15% to 20%, and the mine has significantly increased production and efficiency, which has been fully recognized by mine leaders and employees.