Fe^(3+)对蓝辉铜矿浮选行为的影响及机理

Influence and mechanism of Fe^(3+) on flotation of digenite

通过单矿物浮选试验、浮选溶液化学计算和红外光谱分析的方法,考察丁铵黑药浮选体系中Fe^(3+)对蓝辉铜矿可浮性的影响。结果表明:Fe^(3+)可强烈抑制蓝辉铜矿的浮选,且氢氧化铁沉淀是其抑制蓝辉铜矿浮选的有效组分。适量的柠檬酸钠能使蓝辉铜矿表面的氢氧化铁沉淀解吸,有利于丁铵黑药在蓝辉铜矿表面的吸附,从而活化蓝辉铜矿的浮选。

In the ammonium dibutyl dithiophosphate flotation system, the influence of Fe-（3＋） on the flotation of digenite was investigated through single mineral flotation experiments, the solution chemistry calculations and infrared spectrum analysis. The results indicate that Fe-（3＋） has deterioration effect on the floatability of digenite, and the formation of hydroxide precipitation is the effective inhibition component. However, the sodium citrate can make the iron hydroxide desorpt from the surface of digenite, which is beneficial to the adsorption of the ammonium dibutyl dithiophosphate on its surface, thus, activating the flotation of digenite.