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Leaching of copper from chalcopyrite concentrate by using ammonium persulphate in an autoclave: Determination of most suitable impeller type by using response surface methodologyM. D. Turan1, H. S... were carried out in the presence of ammonium persulfate (APS) and different types of impeller in an autoclave system. Ammonium persulfate concentration and leaching temperature were defined numerically......
Z, FINCH J A. Selectively leaching Cu(Ⅱ) and Ni(Ⅱ) from acid mine drainage sludge by using ethylenediamine-ammonium sulfate [J]. Transactions of Nonferrous Metals Society of China, 2002, 12(6... Thermodynamics of solubility of Cu2(OH)2CO3in ammonia-ammonium chloride-ethylenediamine(En)-water system LIU Wei(刘 维), TANG Mo-tang(唐谟堂), TANG Chao-bo(唐朝波), HE Jing(何 静), YANG Sheng......
Nano Lanthanum Oxide Preparation by Alkalescent Ammonium Citrate System and Its Primary Biological Effect 范玉斌1,伍艳平1,黄小卫1,杨军1,王甲辰1,刘向生1 (1.Beijing General Research Institutes for Nonferrous Metals,Beijing 100088, China;2. National Rare Earth Center for Agriculture,Beijing 100088,China;3.Grirem Advanced Materials Co.,Ltd, Beijing 100088,China) Abstract:Using alkalescent ammonium(AAC......
J. Cent. South Univ. (2012) 19: 2340-2347 DOI: 10.1007/s11771-012-1280-2 Railway tunnel concrete lining damaged by formation of gypsum, thaumasite and sulfate crystallization products in southwest... and Springer-Verlag Berlin Heidelberg 2012 Abstract: The railway tunnel concrete lining exposed to sulfate-bearing groundwater beyond 40 years in southwest of China was investigated. Field investigation......
Trans. Nonferrous Met. Soc. China 28(2018) 2125-2134 Effect of ammonium chloride on leaching behavior of alkaline anion and sodium ion in bauxite residue Yi-wei LI1, Jun JIANG1,2, Sheng-guo XUE1,2... residue through ammonium chloride treatment. The results showed that the pH of bauxite residue decreased from 10.49 to 8.93, total alkaline anion (,, OH-, ) concentration reduced from 38.89 to 25.50 mmol......
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and Technology Beijing, Beijing 100083, China) Abstract: The leaching process and mechanism of high magnesium low grade nickel sulphide ore were studied by ammonium sulfate roasting-water leaching...%, respectively. The roasting and bacterial leaching processes are selective for minerals. The serpentine with high iron content is easy to react with ammonium sulfate in the roasting process. Iron element......
, SINGH P, HEFTER G T. Zinc electrowinning from acidic sulfate solutions. Part III: Effects of quaternary ammonium bromides [J]. Journal of Applied Electrochemistry, 1999, 29(10): 1229-1235. [15] TRIPATHY...J. Cent. South Univ. (2012) 19: 2451-2457 DOI: 10.1007/s11771-012-1296-7 Stability of [BMIM]HSO4 for using as additive during zinc electrowinning from acidic sulfate solution ZHANG Qi-bo(张启波......