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Leaching isomorphism rare earths from phosphorite ore by sulfuric acid and phosphoric acidHui-Xin Jin1,2,Fu-Zhong Wu1,2,Xiao-Hao Mao1,Mei-Long Wang1,Hong-Yan Xie11. College of Materials... in the world contain isomorphism rare earths(RE) which are considerably difficult to be leached into solution in the wet phosphoric acid process. In this work, a systematic study of leaching RE using sulfuric......
in acid solution: direct current study supported by non- electro chemical measurements [J]. Electrochemical Acta, 2002, 47(26): 4139–4148. (Edited by HE Yun-bin) 中文导读 铜镍基合金废料直接电解过程中添加剂对阳极钝化现象的影响 摘要:采用传统电... 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......
-roasting, oxidation-converting, alkaline-roasting or direct-roasting in air [6-10]. Hydrometallurgical processes are usually based on acid-leaching, autoclave-leaching, or chlorinating [l1-15... and tellurium, soda roasting-acid leaching process is a cost-effective approach for recovering selenium and tellurium from anode slimes. The disadvantage of direct roasting in air to the environment......
J. Cent. South Univ. (2020) 27: 2249-2258 DOI: https://doi.org/10.1007/s11771-020-4446-3 Separation of silicon and iron in copper slag by carbothermic reduction-alkaline leaching process WANG Hong... 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......
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......
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......
Pressure nitric acid leaching of alkali-pretreated low-grade limonitic lateriteYong-Lu Zhang,Cheng-Yan Wang,Yong-Qiang Yang,Fei Yin,Bao-Zhong MaInstitute of Metallurgy, Beijing General Research Institute of Mining and Metallurgy摘 要:The pressure nitric acid leaching of alkali-pretreated low-grade limonitic laterite, as well as removing impurity Al(III......
was studied. The optimum condition was discussed for the polysaccharide content determined by phenol-sulfuric acid method in the extracellular polymers of leaching bacteria. The infrared spectrum was used... of H2SO4 and 5% phenol (mass fraction). The measured value is 12 mg/L for the polysaccharide content in the extracellular polymers of leaching bacteria by phenol-sulfuric acid method in the optimum......
Trans. Nonferrous Met. Soc. China 23(2013) 3780-3787 Atmospheric oxygen-rich direct leaching behavior of zinc sulphide concentrate Zhi-feng XU1, Qing-zheng JIANG1, Cheng-yan WANG2 1. School... October 2012; accepted 14 October 2013 Abstract: The leaching behavior of main metallic sulphides in zinc concentrate under atmospheric oxygen-rich direct leaching conditions was studied through......
B, MADHUCHHANDA M, RATH P C, PARAMGURU R K. Simultaneous leaching of a deep-sea manganese nodule and chalcopyrite in hydrochloric acid [J]. Metall Mater Trans B, 2001, 32(5): 777-784. [12] GANTAYAT B... Mechanism of electro-generating leaching of chalcopyrite-MnO2 in presence of Acidithiobacillus thiooxidans XIAO Li(肖 利)1, 2, LIU Jian-she(柳建设)3, FANG Zheng(方 正)1, QIU Guan-zhou(邱冠周)4 1. School......
