Abstract:

With the deepening of the mining,the gold ore grade has a declining trend in a gold mine of Qingdao,to deal with this situation,proposed to extension and reformed the mine beneficiation system,and achieved the purpose of cost reduction and efficiency increment.Through process inspection and the equipment renewal, following the principle of “less investment and quick results”,taking full advantage of the capacity of existing equipment to get a greatly improvement in the beneficiation processing capacity with less investment of adding only a small mill.After transformation,beneficiation processing capacity is greatly improved,grinding processing handling capacity increases from 180 t/d to 280 t/d,the cost per ton decreases from 34.75 yuan/t to 32.53 yuan/t,and economic benefits reaches 2.8 million per year.The transformation is a typical application example of the“more crushing less grinding” in the production,has a certain reference for process re-engineering in the old beneficiation system.

Key words: Ball mill, Equipment explored, Mineral processing capacity, Mineral processing, Economic benefit