共搜索到12080条信息,每页显示10条信息,共1208页。用时:0小时0分0秒500毫秒
J. Cent. South Univ. Technol. (2008) 15: 679-683 DOI: 10.1007/s11771-008-0126-4 Leaching kinetics of low grade zinc oxide ore in NH3-NH4Cl-H2O system WANG Rui-xiang(王瑞祥)1, 2, TANG Mo-tang(唐谟堂)1...; Abstract: The leaching kinetics of low grade zinc oxide ore in NH3-NH4Cl-H2O system......
Leaching of magnesium from desiliconization slag of nickel laterite ores by carbonation process MU Wen-ning(牟文宁)1, ZHAI Yu-chun(翟玉春)2, LIU Yan (刘 岩)2 1. Department of Materials Science... 2009; accepted 30 December 2009 ____________________________________________________________________________________________ Abstract: The leaching of magnesium from desiliconization slag of nickel......
of the surface irregularity of the solid particles on the reaction was investigated. Fitting effects of classical models and fractal models were compared by water leaching experiments of low-temperature...; shrinking core models; waste printed circuit board; water leaching 冶金过程多为涉及气,液,固间的多相反应,其显著特征是在整体反应过程中存在反应界面.界面的结构性质对反应的速率过程有着重要影响,在建立动力学模型时,是主要的参变量之一.利用经典欧氏几何对冶金过程动力学进行研究时,一般将反应界面视为平面或曲面,即将表面视为二维面.在......
concentrations during the leaching experiment. Table 1 Main chemical compositions of materials (mass fraction/%) 2.2 Methods The Ni-Co concentrate was leached in a glass beaker (500 mL) heated in a water...J. Cent. South Univ. Technol. (2009) 16: 0410-0415 DOI: 10.1007/s11771-009-0069-4 Kinetics of nickel leaching from roasting-dissolving residue of spent catalyst with sulfuric acid FENG Qi-ming......
E-pH diagram of ZnS-H2O system during high pressure leaching of zinc sulfide MU Wang-zhong(牟望重), ZHANG Ting-an(张廷安), LIU Yan(刘 燕), GU Yan(古 岩), DOU Zhi-he(豆志河), L? Guo-zhi(吕国志), BAO Li(鲍 丽..., the stable regions of S and Zn(II) in the E-pH diagrams become gradually larger, but the amplification decreases over 150 °C. The impacts of leaching parameters, such as temperature, liquid to solid ratio......
Two-stage precipitation process of iron and arsenic from acid leaching solutions N. J. BOLIN, J. E. SUNDKVIST Boliden Mineral AB, SE-936 81 Boliden, SWEDEN Received 20 September...; Abstract: A leaching process for base metals recovery often generates considerable amounts of impurities such as iron and arsenic into the solution. It is a challenge to separate the non......
, %) 2.3 Set and electrodes for electro-generative leaching The set used was an electrolysis cell made of PVC in water bath, which was divided into two compartments, anolyte and cathlyte, each... Electro-generative mechanism for simultaneous leaching of pyrite and MnO2 in presence of A. ferrooxidans XIAO Li(肖 利)1, 3, FANG Zheng(方 正)1, QIU Guan-zhou(邱冠周)2, LIU Jian-she(柳建设)2 1. School......
Green evaluation of microwave-assisted leaching process of high titanium slag on life cycle assessment CHEN Guo(陈 菓), CHEN Jin(陈 晋), PENG Jin-hui(彭金辉), WAN Run-dong(万润东) Faculty of Metallurgical... _____________________________________________________________________________________________________ Abstract: A greenness evaluation index and system of microwave-assisted leaching method were established. The effects of the life cycle assessment variables......
J. Cent. South Univ. (2016) 23: 39-43 DOI: 10.1007/s11771-016-3046-8 Kinetic study on leaching of nickel from Turkish lateritic ore in nitric acid solution Tevfik AGACAYAK, Veysel ZEDEF, Ali ARAS...) and particle size (<106 μm). The shrinking core model was applied to the results of experiments investigating the effects of leaching temperature in the range of 40-90 °C and nitric acid concentration......
was separated from the pregnant leach solution by passing it through a filter paper and the solids were washed with distilled water. In the leaching tests, the other procedures were as follows..., the leaching reagent was chosen to be water for dissolution of 1 kg Sedum alfredii Hance, while the other variables were 80℃ for leaching temperature, 9 h for duration of leaching and 1/5 for solid-to-liquid......