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美国格雷特湖化学公司研究了用溴化物浸出法从浮选精矿矿样中浸出金.矿样的含金品位为 219—379.2g/t.浸出前,把矿样置于650—750℃下进行焙烧.焙烧后产品中的金品位提高到269—489.6g/t.使用含Br液体(商名为Geobrom3400)进行溴化物浸出.添加NaBr添加剂后,并没有使浸出过程得到改善.溴化物浸出制度:Geobrom3400的浓度为 2—6g/L;浸出时间为 4—6h;PH为 5—6.进入溶液中的金回收率为94—96%.溶液中的含金量近50mg/L,浸出滤渣中的含金量小于或等于20g/t.
Gold Lake Chemical Company of the United States studied the leaching of gold from the flotation concentrates by bromide leaching method.The gold content of the ore samples was 219-379.2 g / t, and the ore samples were placed at 650-750 ℃ before leaching The roasted gold content in the product was raised to 269-489.6 g / t Bromide leaching was performed using a Br-containing liquid (trade name Geobrom 3400) The addition of NaBr additive did not improve the leaching process.Brides Leaching system: Geobrom3400 concentration of 2-6g / L; leaching time 4-6h; PH 5-6 gold recovery into the solution was 94-96% of the gold content in the solution of nearly 50mg / L, the leaching residue In the gold content of less than or equal to 20g / t.