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activation was employed during the leaching(mechanochemical leaching) of chalcopyrite concentrates in a sulfuric acid medium at room temperature and atmospheric pressure. High energy ball milling process...Mechanochemical leaching of chalcopyrite concentrate by sulfuric acidFarhad Khorramshahi Mohammadabad1,Sina Hejazi2,Jalil Vahdati khaki1,Abolfazl Babakhani11. Materials and Metallurgical Engineering......
of millscale from steel plant and the effects of the liquid-solid ratio, the reaction temperature, the leaching time and the sulfuric acid excessive times was investigated. The best technical conditions of the leaching process were ascertained, and the kinetics of leaching was studied. The results show that when liquid-solid ratio is 3?1, the sulfuric acid excess is 1.25 times, reaction temperature......
rate of Pb is only 0.05% leached with 1.25 mol/L sulfuric acid under the conditions of the ratio of slag to liquid of 100 g/L, 65 ℃ and 120 r/min for 2 h. However, Pb extraction rate from 1.25 mol/L sulfuric acid leached residue reaches as high as 66.5% by using 0.1 mol/L EDTA-Na2 solution. The results indicate that two-step sequential extraction procedure combining 1.25 mol/L sulfuric acid......
中和滴定法测定工业硫酸中硫酸含量的不确定度评定钱庆长1,唐满云2(1.安徽省铜陵市 铜陵有色金昌冶炼厂2.铜陵有色金昌冶炼厂,安徽铜陵 244100)摘 要:通过中和滴定法对工业硫酸中硫酸含量的不确定度来源进行分析,对测量过程中的主要不确定度分量进行了评定,包括测量的重复性,称取硫酸的量,硫酸的摩尔质量,称取邻苯二甲酸氢钾的量,邻苯二甲酸氢钾的摩尔量,滴定硫酸耗用的氢氧化钠标准滴定溶液的体积,滴定邻苯二甲酸氢钾耗用的氢氧化钠标准滴定溶液的体积等,并得出中和滴定法测量工业硫酸中硫酸含量的扩展不确定度.
Leaching of vanadium from stone coal with sulfuric acidWANG Mingyu, XIAO Liansheng, LI Qinggang, WANG Xuewen, and XIANG Xiaoyan School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China摘 要:The effects of roasting, mass ratio of H2SO4 to stone coal, leaching temperature, liquid-to-solid ratio, grinding fineness......
J. Cent. South Univ. (2020) 27: 27-36 DOI: https://doi.org/10.1007/s11771-020-4275-4 Kinetics of leaching lithium from lepidolite using mixture of hydrofluoric and sulfuric acid WANG Hai-dong(王海东)1... shows great potential in leaching lithium (Li) from lepidolite. Leaching kinetics of Li in a mixture of sulfuric acid and hydrofluoric acid, which is a typical lixivant for the fluorine-based chemical......
Preparation of manganese sulfate from low-grade manganese carbonate ores by sulfuric acid leachingQing-quan Lin1,Guo-hua Gu1,Hui Wang2,Ren-feng Zhu1,You-cai Liu2,Jian-gang Fu21. School of Minerals... for preparing pure manganese sulfate from low-grade ores with a granule mean size of 0.47 mm by direct acid leaching was developed. The effects of the types of leaching agents, sulfuric acid......
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......
; 文献标志码:A Kinetics of lepidolite decomposition reaction in sulfuric acid solution ZHAO Xun, YANG Jing, MA Hong-wen, LIU Mei-tang, LIN Fei (School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China) Abstract: The decomposition of lepidollite in sulfuric acid solution was studied and the lepidolite concentrate from Sichuan province was obtained......
Study on mechanisms of different sulfuric acid leaching technologies of chromitePei-yang Shi1,2,Cheng-jun Liu1,2,Qing Zhao1,2,Hao-nan Shi31. Key Laboratory for Ecological Metallurgy of Multimetallic... of Technology摘 要:The extraction of chromate from chromite via the sulfuric acid leaching process has strong potential for practical use because it is a simple......
