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, chalcopyrite, disulfide, and polysulfide, were formed in the course of bornite dissolution. The Cu 2p photoelectron spectrum revealed that the valence of copper in bornite and intermediary sulfide formed in the dissolution of bornite is +1. The bornite and chalcopyrite can be converted into each other, and both can be further converted to covellite and/or chalcocite. Key words: leaching; bornite......
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Trans. Nonferrous Met. Soc. China 26(2016) 544-550 Enrichment of ferric iron on mineral surface during bioleaching of chalcopyrite Tang-jian PENG1, Dan ZHOU1, Xue-duan LIU1,2, Run-lan YU1,2, Tao...; accepted 15 September 2015 Abstract: In order to investigate the enrichment of ferric iron bound by extracellular polymeric substance (EPS) on the mineral surface during bioleaching of chalcopyrite......
-dong, WEI Qian, et al. Effects of Cu2+, Fe2+, and Fe3+ on bioleaching of chalcopyrite by moderate thermophilic mixed bacteria[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(1): 171-180. DOI...,铜的浸出率仅为11%.由此可见,在黄铜矿的中等嗜热混合微生物浸出过程中,铜的浸出率随着添加的Fe2+质量浓度增加而降低. 图2 Fe2+对黄铜矿生物浸出的影响 Fig. 2 Impact of Fe2+ on bioleaching of chalcopyrite 从图2(b)可知,即使添加了不同质量浓度的Fe2+,浸出液的电位在浸出5 d后均升高到640 mV左右,说明......
in BEGSL are increased by almost 2 times, and the dissolved Mn2+ ratio and the electric quantity output in BEGSL are nearly 3 times more than those in EGSL. The oxidation debris for chalcopyrite... of chalcopyrite on the surface to Cu2+, Fe2+ and sulfur; and the accumulated sulfur is oxidized by A. thiooxidans in the following procedure in BEGSL. The latter is controlling step in BEGL. The leaching......
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,中国)等. 图1 黄铜矿和黄铁矿的XRD谱 Fig. 1 XRD pattern of chalcopyrite (a) and pyrite (b) 表1 黄铜矿和黄铁矿中主要元素含量 Table 1 Element contents of chalcopyrite and pyrite 1.2 实验方法 1.2.1 .... 图2 矿浆pH值对捕收剂浮选黄铜矿,黄铁矿的影响(cMIBC=7.5 mol/L, cC=4×10-5 mol/L) Fig. 2 Recovery of chalcopyrite (a) and pyrite (b) as function of pH (cMIBC=7.5 mol/L, cC=4×10-5 mol/L) 在矿浆pH值为8时,起泡剂MIBC的用量为7.5......
:A Adsorption kinetics and thermodynamics of 3-hexyl-4-amino-1,2,4-triazole-5-thione on surface of chalcopyrite QU Xiao-yan, LIU Guang-yi, LIU Sheng, ZHONG Hong, XIAO Jing-jing (School of Chemistry and Chemical..., 1HNMR and 13CNMR. And its adsorption kinetics and thermodynamics on the chalcopyrite surface were evaluated. The results indicate that the preferable pH values for HATT adsorption on chalcopyrite......
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; 文献标志码:A 文章编号:1672-7207(2018)06-1315-10 Thermodynamics and mechanism of 5-pentyl-1,2,4-triazole-3-thione adsorption on chalcopyrite surfaces NIU... and mechanism of PETT on to chalcopyrite were investigated. The results show that PETT is an excellent collector for chalcopyrite flotation and it prefers to adsorb on to chalcopyrite surfaces at pH 4.0-9.0......
