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Kinetics of simultaneous leaching of Ag and Pb from hydrometallurgical zinc residues by chlorideZHANG Yali a,YU Xianjin a,and LI Xiaobin b a College of Chemical Engineering,Shandong University of Technology,Zibo 255081,China b School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China摘 要:The leaching kinetics......
kinetics and the conversion rate. And sulfur can be successfully separated from the zinc sulfide concentrate as elemental sulfur. The reasonable experiment parameters are obtained as follows: the leaching...-reacted and generated S, ZnSO4, H2O, etc. In the absence of oxygen, the partial pressure of H2S formed slows down the kinetics of the leaching reaction. The addition of oxygen in the system reduces......
; 文章编号:1672-7207(2013)09-3599-05 Kinetics on leaching process of sintered powder in extracting aluminum oxide from fly ash SUN Peimei, TONG Junwu, XUE Bing, ZHAO Zhe, XU Hongyan, ZHANG Jiaoyang (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China) Abstract: The Na2CO3 leaching kinetics of sintered powder obtained from......
; this leaching process was followed by filtration separation. These conditions resulted in high extents of leaching for Pb and Ag (i.e., 98.87% and 96.74%, respectively). Finally, the kinetics of the process of Ag.../mol. Key words: acid-leaching residue; sulfation roasting; chlorine salt; Pb, Ag; kinetics Cite this article as: WANG Rui-xiang, YANG Yu-dong, LIU Cha-xiang, ZHOU Jie, FANG Zhuang, YAN Kang, TIAN Lei......
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, and in favor of the leaching of sphalerite. After 24 h, the transferred charge due to the bacterial oxidation is an important part of the output electric quantity. References [1] CRUNDWELL F K. Kinetics... Dynamics in simultaneous electro-generative leaching for sphalerite-MnO2 XIAO Li(肖 利)1, 3, QIU Guan-zhou(邱冠周)2, FANG Zheng(方 正)1, LIU Jian-she(柳建设)2 1. School of Chemistry and Chemical......
with particle swarm optimization [J]. IEEE Transactions on Evolutionary Computation, 2006, 8(3): 256-279. [15] ZHANG Shou-xiang, ZHENG Ya-jie. Study on leaching kinetics of pyrite cinder [J]. Chinese Journal of Chemical Engineering, 2006, 34(11): 36-39. (in Chinese) [16] TONG Zhi-fang, BI Shi-wen, LI Hui-li, YANG Yi-Hong. Leaching kinetics of calcium aluminate slag [J]. The Chinese Journal of Process......
; Engineering Chemistry Research, 2003, 42(21): 5031-5036. [7] KAHRUMAN C, YUSUFOGLU I. Leaching kinetics of synthetic CaWO4 in HCl solutions containing H3PO4 as chelating agent[J]. Hydrometallurgy, 2006...]. Hydrometallurgy, 2002, 67: 79-86. [22] HE Gui-xiang, ZHAO Zhong-wei, WANG Xiao-bo, LI Jiang-tao, CHEN Xingyu, HE Li-hua, LIU Xu-heng. Leaching kinetics of scheelite in hydrochloric acid solution containing......
were investigated. Based on the characteristic of the dust, the kinetics and reactive mechanism of acid leaching were stud- ied. The results show that the leaching of the dust by acid belonged...Leaching process of germanium oxide dustLIANG Jiea, b and WANG Huaa a Department of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China b......
, TANG Mo-tang, LI Shi-qing, LUO Yan, TANG Chao-bo. A Study on the kinetics of leaching the residues from the neutral leaching process with high concentration of sulfuric acid at high temperature[J..., DAS G K. A comparative study of leaching kinetics of limonitic laterite and synthetic iron oxides in sulphuric acid containing sulphur dioxide[J]. Hydrometallurgy, 2004, 72(1/2): 59-72. [11......