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Simulated small-scale pilot heap leaching of low-grade copper sulfide ore with selective extraction of copper QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生), LI Wei-zhong(黎维中), WANG Jun(王 军) School...; (b) Recovery of iron and silica In the closed circuit leaching, the pH value of solution was changed from pH 1.8 to pH 2.2. The recovery rates of iron and silica were 0.6% and 2.4%, respectively......
Separation of rhenium from electric-oxidation leaching solution of molybdeniteCAO Zhan-fang(曹占芳)1, 2, 3, ZHONG Hong(钟宏)1, 2, JIANG Tao(姜涛)3, LIU Guang-yi(刘广义)1, 2, WANG Shuai(王帅)1, 2, XIA Liu-yin(夏柳... concentration in model solution is increased. The saturated adsorption capacity of D301 resin for molybdenum and rhenium calculated based on simulated results are 4.263 3 mmol/g and 4.235 5 mmol/g......
Corrosion behavior of AZ31 magnesium alloy in simulated acid rain solution LIU Feng(刘 锋), SONG Ying-wei(宋影伟), SHAN Da-yong(单大勇), HAN En-hou(韩恩厚) State Key Laboratory for Corrosion... tests and immersion tests were conducted in simulated acid rain (SAR) solution, ten times concentration of SAR solution was made up as listed in Table 1[10]. The pH value of the solution was adjusted......
into free quartz solid solution (QSS) and cristobalite solid solution (CSS). QSS and CSS are readily soluble, whereas metallic iron is insoluble, in NaOH solution. Under optimal leaching conditions, a residue... solution; carbothermic reduction; alkaline leaching Cite this article as: WANG Hong-yang, SONG Shao-xian. Separation of silicon and iron in copper slag by carbothermic reduction-alkaline leaching......
. The results indicate that 99.6% zinc is obtained after leaching for 3h at 85℃ and pressure of 0.1MPa O2, with 20g sphalerite concentrate in 200mL leaching solution containing 2.0mol/L H2SO4... usually covers the ore particles, thus preventing effective contacting of the ore particles with the leaching solution, and reducing the leaching rate of the metal being extracted[1-7]. To enhance......
; numerical solution 1 Introduction Leaching is defined as the removal of minerals by dissolving them from the solid matrix. Generally, in-situ leaching and heap leaching are adopted, and the later... and specification are listed in Table 5. Fig.2 Scheme of column leaching test set 1－Upper trunk(filling water); 2－Upper trunk(filling sulfide ferrous solution); 3－Adjusting flux valve; 4－Ore sample; ......
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J. Cent. South Univ. (2012) 19: 77-84 DOI: 10.1007/s11771-012-0975-8 Leaching kinetics of low-grade copper ore with high-alkality gangues in ammonia-ammonium sulphate solution LIU Zhi-xiong(刘志雄)1, 2.... A semi-empirical equation was proposed to describe the leaching kinetics. Key words: leaching kinetics; ammonia-ammonium sulphate solution; low-grade copper ore; high-alkality gangues 1 Introduction......
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Leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate as oxidantLIU Zhi-xiong(刘志雄)1, YIN Zhou-lan(尹周澜)2, CHEN Yi-guang(陈义光)3, XIONG Li-zhi(熊利芝)3(1.... College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China)Abstract:The leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium......
