一种含砷金精矿的生物氧化氰化提金研究

Investigation on Biological Oxidation gold Extraction by Cyanidation of an Arsenic Containing Gold Concentrate

采用两株氧化亚铁硫杆菌对一种含砷金精矿进行了不同充气条件的氧化脱砷和氰化提金试验，结果表明微生物的活性是影响脱砷效果的关键。同时，只有脱砷率超过５０％以后，才能明显改善矿石中金的氰化浸出指标。

Two kinds of thiobacillus ferrooxidans were used in the test of arsenic removal by oxidation and gold extraction by cynidation on an arsenic containing gold concentrate under different aeration conditions.The test results have shown that the microbiological activity is the key factor that affects the arsenic removal efficiency.Meanwhile,only if the arsenic removal rate is over 50%,can the gold cyanidation leaching index be improved.