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____________________________________________________________________________________________ Abstract: The concentrations of S2O32- and SO32- were measured in gold leaching systems, including thiosulfate system, polysulfide system and the modified lime sulfur synthetic..., the main non-cyanide processes include thiosulfate, polysulfide, LSSS (lime sulfur synthetic solution), ML (modified LSSS), thiocyanate, chloride, and bromide leaching processes etc[1-7]. Many processes......
Biooxidation-thiosulfate leaching of refractory gold concentrateHe-fei Zhao1,2,Hong-ying Yang1,2,Lin-lin Tong1,2,Qin Zhang1,2,Ye Kong1,21. Key Laboratory for Ecological Metallurgy of Multimetallic.... The results showed that the optimal reagent conditions were 0.18 M thiosulfate, 0.02 M copper(II), 1.0 M ammonia, and 0.24 M sulfite. Under these conditions, a maximum gold leaching efficiency......
sulfate, sodium thiosulfate and pyrite can improve the efficiency of copper leaching. When the initial mass concentration of ferrous is 5 g/L, the copper leaching rate reaches 35.00% after 46 d leaching, 13.63% higher than that without ferrous sulfate. When sodium thiosulfate is added with 1 g/L of initial S mass concentration, the copper leaching rate reaches the highest value of 38.10% after 46......
thiosulfate-potassium ferricyanide leaching system. The reaction kinetics of silver dissolution in this system was investigated via the rotating disk electrode technology. The influences of important parameters...Silver dissolution in a novel leaching system: Reaction kinetics studyLi Xiao1,2,Pei-wei Han1,Yong-liang Wang1,Guo-yan Fu1,2,Zhi Sun1,Shu-feng Ye11. State Key Laboratory of Multiphase Complex Systems......
Coupling leaching of sphalerite concentrate PENG Peng(彭 鹏)1, 2, XIE Hui-qin(谢惠琴)1, LU Li-zhu(卢立柱)1 (1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China; 2. Engineering Command Institute of Chemical Defence, Beijing 102205, China) Abstract: Coupling process of sphalerite concentrate leaching in H2SO4-HNO3 and tetrachloroethylene extracting of sulfur......
): 536-543. DOI: 10.1016/S1003- 6326(14)63093-4. [36] LI G, RAO M, JIANG T, HUANG Q, PENG Z. Leaching of limonitic laterite ore by acidic thiosulfate solution [J]. Minerals Engineering, 2011, 24(8): 859-863... J. Cent. South Univ. (2019) 26: 2328-2339 DOI: https://doi.org/10.1007/s11771-019-4177-5 Water leaching of arsenic trioxide from metallurgical dust with emphasis on its kinetics YANG Kang(杨康)1, LIU......
Silver sulfide leaching with a copper-thiosulfate solution in the absence of ammoniaAlejandro Lopez-Valdivieso摘 要:Leaching from silver sulfide using... of thiosulfate concentration,copper-to-thiosulfate ratio,agitation vigorousness,pH values,and dissolved gases on the leaching of silver sulfide with the copper-thiosulfate solution were studied.A maximum......
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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... minerals in the electro-generating leaching(EGL) and the bio-electro-generating leaching(BEGL), respectively. The results showed that the dissolution rates for Cu2+ and Fe2+ in BEGL were almost 2 times......