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; column stimulation; water leaching 1 Introduction The alumina industry has developed rapidly due to the requirement for aluminum. Unfortunately, such rapid development has brought about multiple... secondary leachate in leaching, which would highlight the potential dam-failure. If the supply of water (perhaps taking full advantage of rainfall) and recovery of leachates (returned to alumina extraction......
Kinetic process of oxidative leaching of chalcopyrite under low oxygen pressure and low temperature QIU Ting-sheng(邱廷省)1, NIE Guang-hua(聂光华)2, WANG Jun-feng(王俊峰)1, CUI Li-feng(崔立凤)1 1. School...; Abstract: Kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium under oxygen pressure and low temperature was investigated. The effect on leaching......
Alumina Recovery from Kaolin with Mineral Impurities司鹏,乔秀臣School of Resource and Environmental Engineering, East China University of Science and Technology摘 要:The alumina recovery from low grade kaolin (K-JS) treated through thermal and mechanical methods was investigated. High grade kaolin (K-SX) was used as comparison. The optimum calcination......
Trans. Nonferrous Met. Soc. China 27(2017) 220-226 Extraction of molybdenum and nickel from roasted Ni-Mo ore by hydrochloric acid leaching, sulphation roasting and water leaching Peng-fei XIAN... Abstract: To extract molybdenum and nickel from the roasted Ni-Mo ore, a process of hydrochloric acid leaching, sulphation roasting and water leaching was investigated. The results showed that this process......
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铝熟料溶出过程工艺研究[J]. 中南大学学报: 自然科学版, 2010, 41(5): 1698-1702. SUN Peimei, TONG Junwu, XU Hongyan, et al. Study on leaching process of sintered powder in extracting alumina from fly ash[J]. Journal of Central...; 文章编号:1672-7207(2013)09-3599-05 Kinetics on leaching process of sintered powder in extracting aluminum oxide from fly ash SUN Peimei, TONG Junwu, XUE Bing, ZHAO Zhe, XU Hongyan, ZHANG Jiaoyang......
Trans. Nonferrous Met. Soc. China 29(2019) 416-423 Efficient separation of alumina and silica in reduction-roasted kaolin by alkali leaching Xiao-bin LI, Hong-yang WANG, Qiu-sheng ZHOU, Tian-gui QI... that the composition of the Al-Si spinel in roasted kaolin is close to that of 3Al2O3·2SiO2 and the spinel is dissolved with increasing leaching time, resulting in difficulty in deeply separating alumina......
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FILTER PRESSING BEHAVIOUR OF ALUMINA DISPERSIONS曾人杰摘 要:<正>Studies of pressure-volume curves haveshown that the filter pressing behaviours depend on pHvalaes of the alumina dispersion. Densimetry andporosimetry of the filter cakes have revealed that higherdensity,smaller mode pore size and lower specific volumeof total pores can be achieved......
RESEARCH ON MICROWAVE SINTERING ALUMINA CERAMICS周建摘 要:<正>This paper introduces the characteristic of microwave sintering,introduces and analyses the process of microwave sintering of the alumina ceramics, moreover, compared with the experiments of conventional sintering method. Based on the researcb, some results are obtained, and experimental......
