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; Abstract: Kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium under oxygen pressure and low temperature was investigated. The effect on leaching... under low oxygen pressure and low temperature was studied by XIE et al[14] and QIU et al[15]. In this paper, kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium......
. The oxygen pressure was controlled about 0.1MPa through a gas flow meter. Take a sample to analyze once every half an hour. The zinc contents in the raw material, leaching liquor and residue were analyzed... of leaching 85℃, process pressure of oxygen 0.1MPa, ratio of organic solvent to leaching solution 1∶20. 3) It is convenient to operate the coupled leaching technology and sampling during reaction is easy......
J. Cent. South Univ. (2012) 19: 71-76 DOI: 10.1007/s11771-012-0974-9 Oxygen pressure acid leaching of Gacun complex Cu concentrates XU Bin(徐斌)1, 2, ZHONG Hong(钟宏)3, JIANG Tao(姜涛)1 1. School... with high contents of Pb, Zn, Ag, etc by oxygen pressure acid leaching was studied. It is unusual that tetrahedrite, whose treatment was rarely studied, is the primary copper mineral of the concentrates......
is the fastest in the first several hours, and after 12 h it does not evolve significantly. If oxygen is excluded from the aqueous cupric chloride solution during the leaching experiment at 100 ℃, the pyrite... that if oxygen is excluded from the aqueous cupric chloride solution during the leaching experiment at 100 ℃, the pyrite in the ore will not be leached. The presence of pyrite in the sulphide ore allows......
were chosen as parameters in the experiments. The results show that temperature, concentration of ammonia and ammonium chloride have favorable influence on the leaching rate of copper oxide ores... kJ/mol. An equation was also proposed to describe the leaching kinetics. Key words: leaching kinetics; ammonia; ammonium chloride; low grade copper ore  ......
and MnO2 [J]. J Cent South Univ Technol, 2006, 13(1): 49-52. [4] WANG S F, FANG Z. Electrogenerative leaching of galena with ferric chloride [J]. Minerals Eng, 2003, 16(2): 869-872. [5] XIAO L, QIU G Z... Mechanism of electro-generating leaching of chalcopyrite-MnO2 in presence of Acidithiobacillus thiooxidans XIAO Li(肖 利)1, 2, LIU Jian-she(柳建设)3, FANG Zheng(方 正)1, QIU Guan-zhou(邱冠周)4 1. School......
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Study of spent battery material leaching process LI Jin-hui(李金辉)1, 2, LI Xin-hai(李新海)1, ZHANG Yun-he(张云河)1, HU Qi-yang(胡启阳)1, WANG Zhi-xing(王志兴)1, ZHOU You-yuan(周友元)1, FU Fang-ming(符芳铭)1 1... of 120 μm for the exhausted scraps, molar ratio of H2O2 to MeS of 2, leaching temperature about 60 ℃, ratio of liquid to solid of 8, and leaching time of 2 h. The NixCoyMnz precursor for cathode material......
Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(邓志敢), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Min-ting(李旻廷), LI Cun-xiong(李存兄), LI... ____________________________________________________________________________________________ Abstract: Vanadium extraction from stone-coal was investigated by oxygen pressure acid leaching and solvent extraction......
J. Cent. South Univ. (2017) 24: 311-317 DOI: 10.1007/s11171-017-3432-5 Vanadium extraction from vanadium-bearing titanomagnetite by selective chlorination using chloride wastes (FeClx) ZHENG Hai-yan... experiments for extracting vanadium by FeClx as chlorinating agent were conducted over the temperature range of 900-1300 K under air or oxygen atmosphere. The results show that vanadium can be extracted......