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尖山铁矿是太钢重要的铁精矿粉供应基地,年产铁精矿粉209万t。磨选工艺采用三段磨矿5次磁选,共4个系列,其中一段磨矿使用φ3.6×4.5m格子型球磨机,在生产实践过程中,该球磨机的进料部和出料部为故障多发部位,影响球磨机的作业率,且增加了球磨机的维修成本。1 进料部位的改造1.1 改造前的情况 改造前进料部衬套与中空轴采用16个M42×200双头螺栓联接,这些螺栓易松动,且断裂后不易取出,检修难度大,所
Jianshan iron ore is an important iron ore concentrate supply base in TISCO with an annual output of 2.09 million tons of iron ore concentrate. Grinding process using three sections of five magnetic grinding, a total of 4 series, of which a section of the mill used φ3.6 × 4.5m grid-type ball mill, in the production practice, the ball mill feed and discharge department for the Fault prone parts, affecting the operation rate of the ball mill, and increased ball mill maintenance costs. 1 parts of the transformation of the transformation of 1.1 before the transformation of the Ministry of feed before the transformation of the bushing and the hollow shaft with 16 M42 × 200 stud bolts, these bolts easy to loose, and not easy to remove after the fracture, maintenance difficult,