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Metals, 2017(4): 410-415. Remove impurity from high arsenic-content copper electrolyte by cyclone electrowinning technology TIAN Qing-hua1, 2, ZHANG Zhen1, 2, LI Xiao-jing1, 2, LI Dong1, 2, GUO Xue-yi1..., China) Abstract: The cyclone electrowinning technology was used to remove As, Sb and Bi from copper electrolyte with high impurity and low copper content. The effects of current density, flow rate......
J. Cent. South Univ. (2018) 25: 1590-1597 DOI: https://doi.org/10.1007/s11771-018-3851-3 Determination of trace impurity elements in MnZn ferrite powder by direct current glow discharge mass...-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: An analytical method for the determination of 26 impurity elements (such as Li, Be, Na, Mg, Al, Si, P, S, K, Ca, Sc, Ti, V, Cr, Co, Ni, Ga......
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Modification Behavior of Trace Rare Earth on Impurity Phases in Commercial Purity Aluminum 孙锋山1,傅高升1,任立英2,陈文哲2,钱匡武2 (1.Department of Mechanical Engineering;2.College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, China) Abstract:Modifying effect and mechanism of trace rare earth on Fe(Si)-rich impurity phases in commercial purity aluminum were studied with the aids......
of the equilibrium of ferric arsenate with AsO43- via Reaction (3) [27]. Therefore, pH 6 was selected as the optimum pH for impurity remove process. FeAsO4·2H2O+3OH-=FeOOH+AsO43-+3H2O ... leach process, combining an environmentally suitable impurity removal process to recover cadmium. Optimum conditions were found as follows: H2SO4 concentration 90 g/L, liquid/solid ratio 6:1, leaching......
, which is obviously improved compared with the 1248.47×10-6 in metallurgical Si. Key words: primary silicon; Al-Si alloy; electromagnetic stirring; directional solidification; impurity 1 Introduction... are always applied to remove P and B, respectively. Among the purification methods mentioned above, Si must be repeatedly molten in each step to ensure the impurities can easily transfer to outside......
Effect of oxygen impurity on long-term thermal stability of Zr-based metallic glasses below glass transition temperature HE Lin (贺 林)1, ZHANG Shuai(张 帅)1, SUN Jun(孙 军)1, ZHANG Chang-jun(张长军)2 1... of oxygen impurity on the long-term thermal stability of Zr-based metallic glasses was discovered. Keywords: Zr-based metallic glasses; thermal stability; continuous heating transformation diagram......
), which is strong acid-resistance to HF. Unlike HF,the chemical stripping-off effect of the particle size of silicon powder made by aqua regia decreases obviously and the impurity phases easily expose at the grain boundaries. The loss rates of Si powder after two acids are less than 3.5%. Key words: metallurgical silicon; acid leaching; purification process; impurity phases 太阳能光伏发电产业因其取之不尽,用之不竭,清洁环保和安......
Determination of impurity elements in MnZn ferrites by inductively coupled plasma mass spectrometryZhang Ping(张萍)1, FU Liang(符靓)2, 3, MA Jun-cai(马俊才)4, TANG You-gen(唐有根)2(1. College of Materials... followed by dilution with ultrapure water, then the above 16 impurity elements in the solution were analyzed directly by ICP-MS. The impurity elements were introduced by the helium gas or hydrogen gas......
Microthermokinetic study of xanthate adsorption on impurity-doped galena Li-hong LAN1, Jian-hua CHEN2, Yu-qiong LI2, Ping LAN1, Zhuo YANG1, Guang-yong AI1 1. Guangxi Colleges and Universities Key.... Additionally, the relationship between the heat of unsaturated adsorption of xanthate and the adsorption energy of impurity atom on galena surface was investigated. Key words: galena; impurity effect......
