我厂磨矿为三段湿式磨矿,一段采用棒磨机,二、三段采用球磨机。球磨机规格φ3600×4000mm,其主要易损件衬板一直采用锰钢(ZG13Mn)。生产实际表明高锰钢衬板存在以下几个问题:①消耗优质高锰钢数最大。据统计每年平均消耗达1112.378t,每生产1t铁精矿消耗0.61kg;②成本高。根据投产以来平均计算,每生产1t铁精矿衬板计划消耗成本0.90元,1984年实际消耗1.03元。1983年仅 I mill grinding for the three sections of wet grinding, a period of rod mill, two or three sections using a ball mill. Ball mill specifications φ3600 × 4000mm, its main wearing parts lining has been using manganese steel (ZG13Mn). Production shows that the actual high manganese steel liner the following problems: ① consumption of high-quality high-manganese steel the largest number. According to statistics, the average annual consumption of 1112.378t, each producing 1t iron concentrate consumption 0.61kg; ② high cost. According to the average calculation since put into production, the cost of producing 1t iron ore concentrate lining plans to cost 0.90 yuan per person, and the actual consumption in 1984 was 1.03 yuan. Only in 1983