焦家金矿于七十年代初进行开采设计,经过基建开拓、正式投产后,选矿厂原矿处理量基本达到设计规模,但历年黄金产量远远低于设计水平。导致设计产量与实际产量相差较大的原因很多,其中,矿石品位下降则是重要原因之一。现对这个问题谈几点初步认识。 Jiaojia gold mining design in the early seventies, after infrastructure development, formally put into operation, ore dressing plant basically reached the design size, but over the years gold production is far below the design level. There are many reasons for the big difference between the designed output and the actual output. Among them, the decline of ore grade is one of the important reasons. Now I talk about this issue a bit preliminary understanding.