以氧化铝研磨球为再磨磨矿介质的试验研究

以武山铜矿中矿为研究对象,分别利用金属球和氧化铝研磨球进行了磨矿、浮选试验,结果表明在磨矿细度-0.074mm占90%下,氧化铝研磨球与金属球相比具有相同的磨矿性能,前者磨矿产品过粉碎更轻。采用段式半理论公式计算出适宜的瓷高铝球磨矿介质尺寸为Φ30mm、Φ15mm,配比为4:1。以MA-1+Mos-2为组合药剂、矿浆pH=12.0条件下经过一次粗选、两次扫选、两次精选的铜浮选,获得铜精矿品位23.26%、铜回收率95.31%,铜回收率提高1.12%。

Experimental Study on Regrinding Medium with Alumina Grinding Balls at Wushan Copper Mine

Taking Wushan Copper Mine as the research object,grinding and flotation tests were performed using metal balls and alumina grinding balls.The results show that at a grinding fineness of-0.074 mm,90%,alumina grinding balls and metal balls compared with the same grinding performance,the former grinding product is lighter when being crushed.The segmental semi-theoretical formula was used to calculate the appropriate size of the porcelain high alumina ball milling media:Φ30 mm andΦ15 mm,and the ratio was 4:1.With MA-1+Mos-2 as the combined agent,the pulp was subjected to one roughing,two sweeps,and two selected copper flotations under the condition of pH=12.0.The copper concentrate grade was 23.26%,and the copper recovery rate was 95.31%.,copper recovery increased by 1.12%.