金精矿稀硝酸常压氧化渣脱硫试验研究

Experiment on Desulfurization of Dilute Nitric Acid Oxidizing Residue of Gold Concentrate under Normal Pressure

选用3种脱硫剂脱除金精矿稀硝酸氧化渣中的单质硫,其中有2种脱硫剂可循环使用。对云南老王寨金精矿,得硫率为7 1%～14 8%,通过脱硫使稀硝酸氧化渣中金的浸出率由66%提高到85 8%,效果较好。

Three kinds of desulfurization agent are used for removing the homogenous sulfur in dilute nitric acid oxidized residue of gold concentrate.Among them,two kinds of desulfurization can be circulated for reuse.For the gold concentrate of Laowangzai mine,yunnan,the sulfur recovery is 71%～148%,and the leaching recovery of gold from nitric acid oxidized residue is increased from 66% to 858%.