In this work, sodium hypochlorite, hydrogen peroxide, sodium metabisulfite and copper sulfate as activators were investigated to lessen the depression effect of cyanide for deep-depressing chalcopyrite. The experimental results indicate that the copper recovery exceeded 94%, 84% and 97% at the dosage: sodium hypochlorite 3 mL/L, hydrogen peroxide 2 mL/L, sodium metabisulfite 2 x 10(-3) mol/L and copper sulfate 1.67 x 10(-4) mol/L, respectively. According to the results of zeta potential and Fourier transform infrared spectrum, it is suggested that chalcopyrite was depressed because of the chemical adsorption of cyanide on the chalcopyrite surfaces. Sodium hypochlorite, hydrogen peroxide and sodium metabisulfite can destroy Cu-C bond on the deep-depressing chalcopyrite surface by chemical reaction. Copper sulfate can activate deep-depressing chalcopyrite by copper ion adsorption.
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机译：在这项工作中，研究了次氯酸钠，过氧化氢，焦亚硫酸钠和硫酸铜作为活化剂，以减轻氰化物对深部黄铜矿的抑制作用。实验结果表明，在以下剂量下，铜的回收率分别超过94％，84％和97％：次氯酸钠3 mL / L，过氧化氢2 mL / L，焦亚硫酸钠2 x 10（-3）mol / L和硫酸铜1.67 x 10（-4）mol / L。根据ζ电位和傅立叶变换红外光谱的结果，表明黄铜矿被压低是因为氰化物在黄铜矿表面上的化学吸附。次氯酸钠，过氧化氢和焦亚硫酸钠可以通过化学反应破坏深压黄铜矿表面的Cu-C键。硫酸铜可通过铜离子吸附来活化深压黄铜矿。
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