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) Abstract: The high pressure acid leaching of zinc powder replacement residue containing gallium and germanium was carried out. The effects of sulfuric acid concentration, liquid to solid ratio, time... investigated. The results show that increasing sulfuric acid concentration till 156 g/L benefits the leaching of gallium and germanium. Above this point, the leaching rate of germanium will decrease......
and Engineering Aspects, 1998, 142: 59-63. [12] 胡显智. 高镁矿石酸浸降镁及浸出液综合利用研究[D]. 昆明: 昆明理工大学, 2001: 48-55, 99.HU Xian-zhi. Removal of magnesium oxide from high MgO content ores using sulfuric acid leaching...:A Preparation of amorphous silica powder by purification of acid leaching residue of asbestos tailing DU Gao-xiang1, LIU Yue2, DING Hao1, ZHENG Shui-lin2 (1. School of Materials Science and Engineering......
,则H+浓度就越大,进入矿物晶格中的概率就越大,有利于破坏晶体结构,从而钒浸出率就越高.但随着硫酸用量的增加,进入酸浸液的杂质金属离子和阴离子也随之增加,会加重后面的除杂工作,使碱消耗量增加[14].经综合考虑,选定浸出酸用量为焙烧矿用量的40%. 图3 硫酸用量对钒浸出率的影响 Fig.3 Effect of dosage of sulfuric acid... roasting-acid leaching method WANG Ping1, FENG Ya-li1, LI Hao-ran2, ZHANG Ping1, LIU Xin-wei1 (1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083......
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to complex formation between the cerium ions and amino acid molecules. Key words: synergistic inhibition effect; rare earth; complex; amino acid Cite this article as: LIU Xia, YUAN Yi-zhi, WU Zhu-ying... Ce(III) and the amino acid lies in the formation of the Ce–Ser complex. It has been reported that metal complexes have better corrosion inhibition efficiency than that of organic ligands alone [22–24......
solution when the concentration of zinc is 18.7 g/L after being settled for 10 min. 88.60% zinc can be stripped by 196 g/L sulfuric acid, and zinc ion can be separated from ferric ion. Key words: zinc... with metal ions, which accelerates the extraction reaction in the alkaline environment. 3.9 Effect of stripping speed on extraction ratio of zinc The stripping was carried out using sulfuric acid......
ARTICLE J. Cent. South Univ. (2019) 26: 343-352 DOI: https://doi.org/10.1007/s11771-019-4006-x Isolation of an acid producing Bacillus sp. EEEL02: Potential for bauxite residue neutralization WU... wasteland representing extreme hostile environment with increased alkalinity. Microbially-driven neutralization of bauxite residue, based on the microbial acid producing metabolisms, is a novel......
in atmosphere, resulting in the generation of sulfuric acid. The acid drainage/AMD will happen only if the neutral/buffer capacities of the solid waste itself and environment were overwhelmed by its acid...; Abstract: AMD(Acid Mine Drainage)-type acidic groundwater (pH＜4) from oxidizing sulfide tailings in BS nickel mine (Western......
低品位钒矿直接酸浸提钒工艺研究李欣1,王毅1,朱军2(1.西安建筑科技大学 冶金工程学院,陕西西安 7100552.西安建筑科技大学冶金工程学院,西安710055)摘 要:针对提钒工艺现状存在问题,根据物理选矿结果,确定了抛尾富集物酸法直接浸出钒的工艺方法.通过浸出试验,对酸浸提钒阶段各影响因素进行优化.确定了适宜的磨矿粒度,酸度,浸出温度,液固比和浸出时间等工艺条件,钒的浸出率可达到90%以上.关键词:钒矿； 物理选矿； 直接酸浸； 钒浸出率......
effect of modified humic acid binder on pelletisation of specularite concentratesZHOU You-lian(周友连), ZHANG Yuan-bo(张元波), LIU Bing-bing(刘兵兵), LI Guang-hui(李光辉), JIANG Tao(姜涛) (School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China)Abstract:A modified humic acid (MHA) binder was tested as a substitute for bentonite to prepare qualified specularite......
