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river sand as aggregate, cement as binding agent and salt as useful component, and a laboratory leaching experiment was carried out with water as the leaching solution. Each of the samples was 50 mm... into a constant temperature of oven, still at 105 °C for 2 d. Lastly, after weighing was completed, each sample was put into purified water (550 mL), respectively, and the concentration of leaching solution......
Dynamics in simultaneous electro-generative leaching for sphalerite-MnO2 XIAO Li(肖 利)1, 3, QIU Guan-zhou(邱冠周)2, FANG Zheng(方 正)1, LIU Jian-she(柳建设)2 1. School of Chemistry and Chemical...; Abstract: The principle for the electro-generative leaching was applied to simultaneous leaching of sphalerite-MnO2. A galvanic system......
Trans. Nonferrous Met. Soc. China 22(2012) 1753-1759 Extraction of lithium from lepidolite using chlorination roasting-water leaching process YAN Qun-xuan, LI Xin-hai, WANG Zhi-xing, WANG Jie-xi...: Chlorination roasting followed by water leaching process was used to extract lithium from lepidolite. The microstructure of the lepidolite and roasted materials were characterized by X-ray......
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... minerals in the electro-generating leaching(EGL) and the bio-electro-generating leaching(BEGL), respectively. The results showed that the dissolution rates for Cu2+ and Fe2+ in BEGL were almost 2 times......
A novel recovery technology of trace precious metals from waste water by combining agglomeration and adsorption ZOU Hua-sheng(邹华生), CHU Zhu-qiang(储著强), LIN Gang(林 岗) School of Chemical and Energy...: A novel and efficient technology for separating and recovering precious metals from waste water containing traces of Pd and Ag was studied by the combination of agglomeration and adsorption. The recovery......
Leaching and recycling of zinc from liquid waste sediments PENG Bing(彭 兵), GAO Hui-mei(高慧妹), CHAI Li-yuan(柴立元), SHU Yu-de(舒余德) School of Metallurgical Science and Engineering, Central South...; Abstract: The selective leaching and recovery of zinc in a zinciferous sediment from a synthetic wastewater......
. NaOH was used as leaching agent at a solid-to-liquid ratio of 1:10, 5 g electric arc furnace dust was added under constant agitation and in a 1 L closed flask, a water-cooled condenser as flask cover... and franklinite. Fig.2 X-ray diffraction pattern of EAF dust 3.2 Thermodynamics of zinc leaching The solubility of zinc oxide in water at 25 ℃ can be described by the following reactions [9,11,14]: Zn2......
of the important vanadium sources in China. The brief flow of the classical process leaching vanadium from stone coal includes chloridizing roasting, water leaching, deposition, alkali melting and thermal...) is 1.090 0%. Table 1 Chemical compositions of vanadium ore (mass fraction, %) 2.2 Methods The leaching experiments were performed in a 300 mL three-necked flask heated in a water bath kept......
J. Cent. South Univ. (2016) 23: 1032-1039 DOI: 10.1007/s11771-016-0352-0 Optimization and mechanism of surfactant accelerating leaching test AI Chun-ming(艾纯明)1, WU Ai-xiang(吴爱祥)2, WANG Yi-ming(王贻明)2... and Technology Beijing, Beijing 100083, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: To solve the problem of slow leaching speed of copper, surfactant was added......
Microbial leaching of marmatite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans WANG Jun(王 军), QIU Guan-zhou(邱冠周), QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生) School... was studied. After leaching for 29 days, the leaching ratio of zinc was 91%. Three kinds of bacteria, mixture-based bacteria, 9K-based bacteria and sulfur-based bacteria were used in marmatite leaching......