Abstract The effect of ferrate on the flotation of chalcopyrite and molybdenite in the absence of a collector was studied in this work. Flotation tests on single minerals revealed that chalcopyrite was strongly depressed by the ferrate for pH ranging from 4 to 9, whereas molybdenite was only slightly affected. The flotation tests on mineral mixtures and real ore confirmed that ferrate could selectively depress chalcopyrite flotation without significantly affecting molybdenite floatation. Under the optimum conditions, a value of >60% was obtained for the difference between the recovery of chalcopyrite and molybdenite. X-ray photoelectron spectroscopy results revealed that the oxide and hydroxide content and iron content of the chalcopyrite surface increased from 55.42% to 74.80% and 2.56% to 5.15%, respectively. This confirmed that the ferrate-treated chalcopyrite surface was more hydrophilic than the untreated surface. Therefore, ferrate can be used as a selective depressant of chalcopyrite in copper-molybdenum separation within a wide pH range.

中文翻译：

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在没有捕收剂的情况下使用高铁酸盐 (VI) 作为选择性抑制剂从黄铜矿中浮选辉钼矿

摘要 本文研究了高铁酸盐对无捕收剂条件下黄铜矿和辉钼矿浮选的影响。对单一矿物的浮选试验表明，对于 4 到 9 的 pH 值，高铁酸盐会强烈抑制黄铜矿，而辉钼矿仅受到轻微影响。对矿物混合物和真实矿石的浮选试验证实，高铁酸盐可以选择性地抑制黄铜矿的浮选，而不会显着影响辉钼矿的浮选。在最佳条件下，黄铜矿和辉钼矿的回收率差值>60%。X 射线光电子能谱结果显示，黄铜矿表面的氧化物和氢氧化物含量和铁含量分别从 55.42% 增加到 74.80% 和 2.56% 到 5.15%。这证实了高铁酸盐处理的黄铜矿表面比未处理的表面更亲水。因此，高铁酸盐可在较宽的pH范围内用作铜钼分离中黄铜矿的选择性抑制剂。