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酸浓度高低关联不大.此外,常压浸出料浆几乎无法过滤,故过滤速率未列于图中.这一现象与LIU等[22-25]的研究结果基本吻合,在硫酸浓度为156 g/L的加压浸出中, 锌渣中Fe大部分进入溶液中,加压浸出矿浆过滤速度较常压酸浸时提高近20倍. 表1 锌置换渣主要化学成分 Table 1 Main composition of zinc replacement residue...强明显增高,表明加压浸出渣的结晶程度高,孔结构更完善.此浸出条件得到的浸出渣的孔结构数据(BET-BJH分析)为:比表面积242.677 m2/g,孔容0.367 cm3/g,孔半径20.259 nm.浸出渣中存在介孔结构,是浸出渣的过滤性能得以改善的重要原因. 图2 锌置换渣的XRD谱 Fig. 2 XRD pattern of zinc powder......
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for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China) Abstract: The chemical composition and zinc phases were studied by XRD, XPS, ICP and phase analysis... distribution rate of zinc neutral leaching residue 图2 中浸渣的XRD谱 Fig. 2 XRD pattern of zinc neutral leaching residue 1.2 实验及检测仪器 主要实验设备及仪器有:粒度分析仪(LS-POP(6),珠海欧美克)；强磁力回转高压反应釜(KCF-1L,威海景达)；电子......
of Sciences, Guangzhou 510650, China Received 3 March 2020; accepted 28 October 2020 Abstract: Zn, Pb, Ga and Ge were separated and recovered from zinc refinery residues by stepwise leaching... presenting a potential industrial application. Key words: zinc refinery residues; gallium; germanium; stepwise leaching 1 Introduction Germanium (Ge) and gallium (Ga) are considered as strategic metals......
Properties of a new type Al/Pb-0.3%Ag alloy composite anode for zinc electrowinningHai-tao Yang1,Huan-rong Liu2,Yong-chun Zhang1,Bu-ming Chen1,Zhong-cheng Guo1,3,Rui-dong Xu1,41. Faculty... Co.Ltd.4. State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization摘 要:An Al/Pb-0.3%Ag alloy composite anode was produced......
] studied the biosorption of heavy metal mixture by sludge, and built the corresponding adsorption model. BUX et al[14], ATKISON et al[15] studied the adsorption of zinc contained wastewater with high..., ZHANG Ai-qian, WANG Lin-sheng. Biosorption of heavy metal mixture by activated sludge [J]. Acta Scientiae Circumstantiae, 2002, 21(6): 528-532. [14] BUX F, ATKINSON B, KASAN H C. Zinc biosortion......
Zinc leaching residue (ZLR) generated in traditional zinc hydrometallurgical process is classified as a hazardous intermediate due to its potential leaching of toxic metal ions such as Zn, Pb, Cd... in separating zinc and iron in traditional zinc hydrometallurgy process which can eventually result in substantial stockpile of ZLR in great abundance in an inevitable way and a magnitude of metal......
Effect of Y(OH)_3 microparticles on the electrochemical performance of alkaline zinc electrodes ZHANG Hui1,LI Weiping1,LIU Huicong1,ZHU Liqun1 (1.Key Laboratory of Aerospace Materials and Performance Ministry of Education,School of Materials Science and Engineering,Beihang University,Beijing 100191,China) Abstract:This work focused on the zinc powder coated with Y(OH)_3 microparticles by means......
Optimization of low-temperature alkaline smelting process of crushed metal enrichment originated from waste printed circuit boardsGUO Xue-yi(郭学益), LIU Jing-xin(刘静欣) (School of Metallurgy and Environment, Central South University, Changsha 410083, China)Abstract:A novel low-temperature alkaline smelting process is proposed to convert and separate amphoteric metals in crushed metal enrichment......
J. Cent. South Univ. (2017) 24: 1968-1976 DOI: https://doi.org/10.1007/s11771-017-3605-7 Spatiotemporal distribution model for zinc electrowinning process and its parameter estimation DENG Shi-jun(邓... Press and Springer-Verlag GmbH Germany 2017 Abstract: This paper focuses on the distributed parameter modeling of the zinc electrowinning process (ZEWP) to reveal the spatiotemporal distribution......
