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Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(邓志敢), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Min-ting(李旻廷), LI Cun-xiong(李存兄), LI... ____________________________________________________________________________________________ Abstract: Vanadium extraction from stone-coal was investigated by oxygen pressure acid leaching and solvent extraction......
J. Cent. South Univ. (2016) 23: 3085-3091 DOI: 10.1007/s11771-016-3373-9 Solvent extraction mechanism and precipitation stripping of bismuth (III) in hydrochloric acid medium by tributyl phosphate... and Springer-Verlag Berlin Heidelberg 2016 Abstract: Tributyl phosphate (TBP) was employed for the Bi(III) extraction from hydrochloric acid medium. The effects of extraction time and material concentration......
J. Cent. South Univ. (2017) 24: 773-781 DOI: 10.1007/s11771-017-3479-8 Gaseous hydrogen storage thermodynamics and kinetics of RE–Mg–Ni-based alloys prepared by mechanical milling ZHANG Yang-huan(张羊... in the Ni content has a slight effect on the thermodynamic properties of the alloys, but it significantly improves their absorption and desorption kinetics performances. Furthermore, varying milling time......
Kinetics of oxidation-precipitation of cobalt(Ⅱ) from solution by ozone TIAN Qing-hua(田庆华), GUO Xue-yi(郭学益), YI Yu(易 宇), LI Zhi-hai(李治海) School of Metallurgical Science and Engineering... investigated. The kinetics equation of each condition was established. The results indicate that the oxidation rate is independent of the initial concentration or solution temperature. The oxidation rate......
oxide to leach under acidic conditions (for the maximum extraction of 50%). In this research, the feasibility of leaching cuprite in an ammoniacal medium was studied. The working conditions addressed..., 0.10 mol/L NH4OH, 45 °C, 4 h, 850 r/min and a liquid/solid ratio of 400:1, reaching a copper extraction rate of 82%. This result was related to the non-precipitation of copper in solution......
-to-ore mass ratio 4:1, stirring speed 700 r/min, gas flow 1 L/min, and reaction time 300 min), vanadium and chromium extraction rates can reach up to 95% and 90%, respectively. Kinetics analysis results... Fig. 15 Effect of temperature on chromium extraction rate 3.7 Kinetics analysis The extraction of vanadium and chromium was analyzed with the shrinking core model under the assumption that the ore......
and Vmax were found to be 0.11 mmol/L and 2.57 μmol/(L?min). Key words: Acidithiobacillus ferrooxidans; IscS; purification; optimum pH; optimum temperature; inhibition; kinetics  ... LTD. Top10 competent cells, E. coli strain BL21(DE3) competent cells came from Invitrogen Life Technologies. The Plasmid Mini kit, a gel extraction kit and synthesized oligonucleotides were obtained......
in the cell could enhance the dissolution reaction, while the increased acid under pH=2 might slightly hamper the process. The anode dissolution kinetics studies show that the presence of bacteria could decease...; bacteria modification; powder microelectrode; chalcopyrite; kinetics 1 Introduction The bioleaching research has a great progress in metallurgy industry. A significant number of commercial......
; this leaching process was followed by filtration separation. These conditions resulted in high extents of leaching for Pb and Ag (i.e., 98.87% and 96.74%, respectively). Finally, the kinetics of the process of Ag.../mol. Key words: acid-leaching residue; sulfation roasting; chlorine salt; Pb, Ag; kinetics Cite this article as: WANG Rui-xiang, YANG Yu-dong, LIU Cha-xiang, ZHOU Jie, FANG Zhuang, YAN Kang, TIAN Lei......
J. Cent. South Univ. Technol. (2010) 17: 911-917 DOI: 10.1007/s11771-010-0576-3 Modeling of metadynamic recrystallization kinetics after hot deformation of low-alloy steel Q345B MA Bo(马博)1, 2...-recrystallization kinetics. The metadynamic recrystallization behavior of low-alloy steel Q345B during hot compression deformation was investigated in the temperature range of 1 000-1 100 ℃, the strain rate......