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J. Cent. South Univ. (2012) 19: 71-76 DOI: 10.1007/s11771-012-0974-9 Oxygen pressure acid leaching of Gacun complex Cu concentrates XU Bin(徐斌)1, 2, ZHONG Hong(钟宏)3, JIANG Tao(姜涛)1 1. School... with high contents of Pb, Zn, Ag, etc by oxygen pressure acid leaching was studied. It is unusual that tetrahedrite, whose treatment was rarely studied, is the primary copper mineral of the concentrates......
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Adsorption of acid and basic dyes by sludge-based activated carbon: Isotherm and kinetic studiesLI Xin(李鑫)1, WANG Guang-zhi(王广智)1, LI Wei-guang(李伟光)1, 2, WANG Ping(王萍)1, SU Cheng-yuan(宿程远)1(1. School...), Harbin 150090, China)Abstract:A batch experiment was conducted to investigate the adsorption of an acid dye (Acid Orange 51) and a basic dye (Safranine) from aqueous solutions by the sludge-based activated......
Preparation and Property of Acrylic Acid Rare Earth Complex and Its Hydrosilylation OKAMOTO Hiroshi1,CHEN Haiyan2,Inoue Shinich1,Chen Xiaosong3,Dai Shaojun4,Zhang Ming6 (1.Department of Applied...;6.College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China) Abstract:Acrylic acid rare earth complex was prepared. Its chemical composition was determined by chemical......
Preparation of boric acid from low-grade ascharite and recovery of magnesium sulfate LI Jie(李 杰)1, FAN Zhan-guo(樊占国)1, LIU Yan-li(刘艳丽)1, LIU Su-lan(刘素兰)1, JIANG Tao(姜 涛)1, XI Zheng...; accepted 19 January 2010 Abstract: Boric acid and kieserite were prepared from low-grade ascharite by sulfuric acid method. This method results in the recovery of 71.06% and 45.03% for boric acid......
and acid mine drainage environment protection LIAO Rui(廖蕤)1, 2, YU Shi-chao(于世超)1, 2, WU Bai-qiang(邬柏强)1, 2, ZHAO Chun-xiao(赵春晓)1, 2, LIN Hao(林豪)1, 2, HONG Mao-xin(洪茂鑫)1, 2, WU Hai-yan(武海艳)1, YANG Cong-ren(杨... have caused serious environmental problems such as acid mine drainage (AMD). The understanding of some common sulfide minerals bioleaching processes and protection of AMD environment is reviewed......
J. Cent. South Univ. (2020) 27: 3821-3838 DOI: https://doi.org/10.1007/s11771-020-4473-0 Performance evaluation of nano-silica and silica fume on enhancing acid resistance of cement-based... acid resistance of mortar mixtures. The NS and SF were added as substitutions for cement at various dosages. The cured samples were immersed in the sulfuric acid solution with a pH of 2 for 75 d......
Pressure leaching of zinc silicate ore in sulfuric acid medium LI Cun-xiong(李存兄), XU Hong-sheng(徐红胜), DENG Zhi-gan(邓志敢), LI Xing-bin(李兴彬), LI Ming-tin(李旻廷), WEI Chang(魏 昶) Faculty... and the results showed that zinc exists mainly as hemimorphite and smithsonite in the sample. Sulfuric acid pressure leaching of zinc silicate ore was carried out to assess the effect of particle size, sulfuric......
Microbial aspects of acid mine drainage and its bioremediation K.A. NATARAJAN Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India Received... abandoned mines and processed waste tailings in the generation of acid mine drainage and toxic metal dissolution was discussed. Mechanisms of acid formation and dissolution of copper, zinc, iron and arsenic......
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