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conditions. The varying conditions are: initial nickel ion concentration, the pH value of the solution, the scouring agent and the anion in saline solution. With very little Ni2+ concentration... of the preparation conditions (ion as reactant, pH value of the solution, nickel ion concentration, scouring agent) on the size, morphology and chemical and catalyzed properties of the core-shell......
) is the vacancy of copper ions; VCu (M) is the vacancy created by the copper cation in the alloy; CuCu (ox) is a monovalent copper ion site inside the film; NiCu (ox) is the site where nickel divalent... J. Cent. South Univ. (2018) 25: 754-763 DOI: https://doi.org/10.1007/s11771-018-3780-1 Effect of additives on anode passivation in direct electrolysis process of copper–nickel based alloy scraps LI......
the size of "microreactors". 3.4 Effect of concentration of nickel ion on size of nickel particles It is found from the experiment that the nickel size prepared from emulsion also depends on the concentration of nickel ion in emulsion system. The emulsion would turn turbid very soon when the concentration of NiSO4 is small (less than 1.0 mol/L). When the concentration of NiSO4 is 1.0 mol/L......
Removal of vanadium from ammonium molybdate solution by ion exchange LI Qing-gang(李青刚)1, 2, ZHANG Qi-xiu(张启修)2, ZENG Li(曾 理)2, XIAO Lian-sheng(肖连生)1, 2, YANG Ya-nan(杨亚男)2 1. State Key Laboratory... molybdenum; vanadium; chelate resin; ion exchange; separation ......
J. Cent. South Univ. (2017) 24: 2799-2804 DOI: https://doi.org/10.1007/s11771-017-3694-3 Copper smelter slag treatment by ammonia solution:Leaching process optimization R. Nadirov1, L. Syzdykova2... slag processing by ammonia solution treatment was investigated. The central composite rotatable design (CCRD) and approximation method were used to determine the optimum conditions of zinc and copper......
by the chemical weathering of nickeliferous peridotite rock under humid climates[1-2], in which nickel is concentrated in different secondary minerals in the form of oxide. Because of the complex...] DEEPATANA A, TANG J A, VALIX M. Comparative study of chelating ion exchange resins for metal recovery from bioleaching of nickel laterite ores [J]. Minerals Engineering, 2006, 19(2): 1280-1289. [9] LIU Y......
agent can be also recycled at room temperature and normal pressure. Key words: low-grade nickeliferous laterite ore; nickel; cobalt; reduction roasting; ammonia leaching; extraction ammonia leaching, high pressure acid leaching, atmospheric pressure leaching, and dump leaching [10-22] are the alternative processes to extract nickel and cobalt from nickeliferous laterite ores......
Dissolution kinetics of low grade complex copper ore in ammonia-ammonium chloride solution LIU Wei(刘 维), TANG Mo-tang(唐谟堂), TANG Chao-bo(唐朝波), HE Jing(何 静), YANG Sheng-hai(杨声海),YANG Jian-guang(杨建... complex copper ore was investigated in ammonia-ammonium chloride solution. The concentration of ammonia and ammonium chloride, the ore particle size, the solid-to-liquid ratio and the temperature......
is ?36.26 dB under the match thickness of 5.63 mm, and the bandwidth less than ?10 dB can reach 4.7 GHz.Key words:nickel ferrite; sol-gel method; ion replace; magnetic property; optimization design...?36.26 dB,小于?10 dB的频宽可达4.7 GHz.关键词:镍基铁氧体；溶胶凝胶法；离子取代；磁性能；优化设计Performance of nickel ferrite replaced by different ions and optimization design of absorbing coatingLIU Yuan, LIU Xiang-xuan, WANG Xuan-jun......
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