巯基乙酸钠替代氰化钠浮钼工业试验探索

Industrial Experiment Study on Molybdenum Flotation Using Mercaptoacetic Sodium Acid Instead of Sodium Cyanide

氰化钠是浮选金属矿物的重要抑制剂之一,但是在使用过程中存在对人体和环境的潜在危害。试验介绍了栾川某钼矿选矿厂在铜钼分离中使用新药剂巯基乙酸钠替代氰化钠选钼的工业试验情况,结果表明巯基乙酸钠在钼矿浮选中能有效抑制铜,单独使用该药剂时,可以得到品位合格的钼精矿,但抑铜效果不稳定。同时指出了巯基乙酸钠在选厂铜钼浮选分离使用过程中应该注意的问题和改进措施,建议选用传统药剂氰化钠与新药剂巯基乙酸钠按比例混合使用的方式,达到综合抑制的效果。

As an important depressant, sodium cyanide was used in metal mineral flotation, but it was potential hazard to humans and the reviroment. The industrial experiment of molybdenum flotation using mercaptoacetic sodium acid instead of sodium cyanide was conducted. The results showed that mercaptoacetic sodium acid was an effective depressant in molybdenum flotation, and qualified concentrate was obtained when mercaptoacetic sodium acid was used as depressant of copper. But the flotation indices were unstable. The precautions and improving measures were proposed. The combination of mercaptoaeetic sodium acid with sodium cyanide in a certain proportion was suggested to improve the comprehensive inhibitory effect.