溴化法浸取硫化矿中的金

Leaching Gold from Sulfid Ore by Method of Bromide

用溴化法浸取金矿中的金是一种较新的非氰化浸金方法。实验表明:对于含金量为8.32g/t的某硫化矿,经800℃焙烧后,在常温下,NaBr浓度为0.3mol/L,FeCl_3浓度为0.08mol/L及加入适量H_2O_2和NaC10的条件下,6h可以浸出75％以上的金。该方法具有环境污染程度小,操作简单等优点,有重要的工业应用推广价值。

Leaching gold from ore by the bromination method is a new method in stead of cyanide process. The expermental results shows that for one kind of sulfide gold ore (the quantity of gold is 8 .32g/t) , after roasting at 800℃, under room normal temperature, the concentration of NaBr and FeCle is 0.3 mol/L and 0.08 mol/L, respectively, and suitable content of H2O2 and NaCIO, leaching 6 hours, more than 75% of gold can be obtained. This method has little enviornmental contamination,operating simply,and is useful for industry.