含砷碳金矿石全泥氰化浸金试验研究

针对甘肃省某金矿难浸矿石类型，提出了一种含砷碳金矿石全泥氰化浸金的工艺方法。研究表明，采用浓度为15%的NaOH和浓度为2%的H2O2对矿石进行预处理，可有效地消除砷对氰化浸金的影响。碳的干扰可采用加入煤油的方法，使矿样中的碳活性产生钝化，从而消除碳的“劫金作用”。该工艺方法可使金的氰化浸出率提高到95%以上，具有较好的经济和社会效益。

Experimental Study of Cyanidation Leaching from Arsenic-Carbon Gold Ore

To solve the problem of refractory ore types of one gold mine in Gansu Province，we propose a process method of cyanidation leaching from arsenic-carbon gold ore.The study shows that the ore pre-treatment using concentration of 15% NaOH and 2% H2O2 can effectively eliminate the affect of arsenic to cyanide leaching gold.At the same time，we can reduce carbon interference using the method of adding kerosene，it makes carbon activity in ore samples produce passivation，thereby eliminating“robbing gold role”of carbon.The process method can make gold cyanide leaching rate increased to 95%，it has a good economic and social benefits.