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钢中钒化物的电化学分离法
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作者 徐铭熙 代大煜 +2 位作者 李海拉 耿连儒 崔永娟 《理化检验(化学分册)》 CAS CSCD 北大核心 1990年第1期6-8,12,共4页
关键词 钒化物 电化学分离法
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Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate 被引量:9
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作者 Cuicui Lü Yongliang Wang +5 位作者 Peng Qian Ya Liu Guoyan Fu Jian Ding Shufeng Ye Yuanfa Chen 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第9期1814-1821,共8页
Copper tailings constitute a large proportion of mine wastes. Some of the copper tailings can be recycled to recover valuable minerals. In this paper, a copper tailing was studied through the chemical analysis method,... Copper tailings constitute a large proportion of mine wastes. Some of the copper tailings can be recycled to recover valuable minerals. In this paper, a copper tailing was studied through the chemical analysis method, Xray diffraction and scanning electron microscope-energy dispersive spectrum. It turned out that chalcopyrite(Cu) and pyrite(S) were the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH, ammonium humate(AH) was singled out as the effective regulator. The depression mechanism of AH on the flotation of pyrite was proved by FTIR spectrum and XPS spectrum, demonstrating that there was a chemical adsorption between AH and pyrite. By Response Surface Methodology(RSM), the interaction between AH, pulp pH and iso-butyl ethionine(Z200) was discussed. It was illustrated that the optimal dosage of AH was 1678 g·t^(-1) involving both the recovery of Cu and S. The point prediction by RSM and the closed-circuit flotation displayed that the qualified Cu concentrate and S concentrate could be obtained from the copper tailing.The study indicated that AH was a promising pyrite depressor in the low pulp pH from copper tailings. 展开更多
关键词 Copper tailings Ammonium humate DEPRESSION Response Surface Methodology
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