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method of concentration of leaching solution was put forward. For each sample, respectively, by applying phase space reconstruction for time series of monitoring data, the saturated embedding dimension... of leaching solution was set up and the maximum error of which was less than 2%. The results show that there exist chaotic characteristics in leaching system, and samples of different grades have......
of Cr(Ⅵ) concentration leached out from chromium-containing slag with HCl as leaching agent, and to study influences of pH, ratio of solid mass to solution volume, flow velocity and temperature on Cr... increases with decreasing pH and increasing flow velocity and temperature. Moreover, Cr(Ⅵ) leaching percentage increases with increasing ratio of solid mass to solution volume. The optimal parameters......
not only can simplify the purification of the leached solution, but also can produce element sulfur instead of gaseous H2S[7] and SO2[8] that pollute environment in the traditional leaching... 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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prepared from the purified leaching solution, can meet the demand of precursor by pure chemicals. The process is economic and feasible for base metals from spent battery material. Key words: spent... solution, such as leaching with different acids, chlorination, pyro- and hydro- metallurgical processes for extraction[4-9], and solvent extraction[10-11], ion exchange[12-14], sulfuration precipitation[15......
of HCl-AlCl3 solution. The result indicates that REFCO3 of the mixed rare earth concentrate can be dissolved, but REPO4 remains in the leaching residue. This method provides a way to separate and extract rare...Mixed rare earth concentrate leaching with HCl-AlCl3 solutionMei Li1,2,Xiao-Wei Zhang1,2,Zhao-Gang Liu1,Mi-Tang Wang2,Jia Liu2,Jian-Ping Yang21. College of Materials Science and Engineering, Beijing......
Effect of mechanical activation on alkali leaching of chromite ore ZHANG Yang(张 洋)1, 2, ZHENG Shi-li(郑诗礼)1, DU Hao(杜 浩)1, XU Hong-bin(徐红彬)1, ZHANG Yi(张 懿)1 1. National Engineering Laboratory.... It is observed that the extraction ratio reaches 97% after leaching for 200 min when chromite ore is mechanically activated for 10 min, but only 34% if not activated. Mechanical activation can decrease......
Behavior of S2O32- and SO32- in sulfur-bearing aqueous solution system for gold leaching CHEN Xiang-yang(陈向阳)1, 2, LAN Xin-zhe(兰新哲)1, 2, ZHANG Qiu-li(张秋利)1, ZHOU Jun(周 军)1, SONG Yong..., 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......
of Science and Technology Beijing, Beijing 100083, China) Abstract: Leaching experiments of a Guangxi typical tin tailings under simulated acid rain (pH=3, 4.5, 6.0) were carried out to investigate the release law of As, Zn and Pb. The results indicate that the pH of leaching liquid is positively correlated to the pH of simulated acid rain, while the conductivities, the accumulated leaching liquid......
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