我矿选矿厂于1960年3月正式投产,1963年11月扩建了混汞选金车间,由单一浮选流程改为混汞一浮选联合流程。近年来,随着井下生产向深部发展,原矿品位逐年下降,铜由1～1.2％降至0.5～0.6％,金由4～5(克/吨)降至1～2(克/吨)。 Our mine concentrator was formally put into operation in March 1960, and an amalgamation workshop was expanded in November 1963, changing from a single flotation process to a mixed flotation process. In recent years, along with the deep underground production development, the ore grade declines year by year, with the copper decreasing from 1 to 1.2% to 0.5 to 0.6% and gold from 4 to 5 (g / t) to 1 to 2 (g / t).