|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dissolution kinetics and thermodynamic analysis of vanadium trioxide during pressure oxidation显示文摘The dissolution kinetics of vanadium trioxide in sulphuric acid-oxygen medium was examined. It was determined that the concentration of sulphuric acid and stirring speed above 800 r min 1 did not significantly affect vanadium extraction. The dissolution rate increased with increasing temperature and oxygen partial pressure, but decreased with increasing particle size. The dissolution kinetics was controlled by the chemical reaction at the surface with the estimated activation energy of 43.46 kJ·mol-1. The leaching mechanism was confirmed by characterizing vanadium trioxide and the dissolution residue using SEM-EDS analysis. Combined with thermodynamic calculation, the pressure leaching of vanadium trioxide in the temperature range (100 to 140 ℃) studied occurs as follows: V2O3 + O2 + H2SO4 = (VO2)2SO4 + H2O. | Zhou, Xuejiao Wei, Chang Xia, Wentang Li, Minting Li, Cunxiong Deng, Zhigan Xu, Hongsheng | 2012 | Rare Metals2012，31，3： | 4 |
| 2 | Recovery of H 2 SO 4 from an acid leach solution by diffusion dialysis显示文摘 | Chang Wei Xingbin Li Zhigan Deng Gang Fan Minting Li Cunxiong Li | 2009 | Journal of Hazardous Materials2009，，1： | 2 |
| 3 | Extracting vanadium from stone coal by oxygen pressure acid leaching and solvent extraction 显示文摘 | DENG Zhigan WEI Chang FAN Gang | 2010 | Transactions of Nonferrous Metals Society of China2010，，： | 1 |
| 4 | Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction 显示文摘 | Deng Zhigan Wei Chang Fan Gang | 2010 | Transactions of Nonferrous Metals Society of China2010，，20： | 1 |
| 5 | Extracting vanadium from stone coal by oxygen pressure acid leaching and solvent extraction 显示文摘 | Deng Zhigan Wei Chang | 2010 | Transactions of Nonferrous Metals Society of China2010，20，11： | 1 |
| 6 | Kinetics of vanadium dissolution from black shale in pressure acid leaching显示文摘 | Minting Li Chang Wei Shuang Qiu Xuejiao Zhou Cunxiong Li Zhigan Deng | 2010 | Hydrometallurgy2010，，2： | 1 |
| 7 | Selective solvent extraction of vanadium over iron from a stone coal/black shale acid leach solution by D2EHPA/TBP显示文摘 | Xingbin Li Chang Wei Zhigan Deng Minting Li Cunxiong Li Gang Fan | 2010 | Hydrometallurgy2010，，3： | 1 |
| 8 | Extractingvanadium from stone-coal by oxygen pressure acidleaching and solvent extraction 显示文摘 | DENG Zhigan WEI Chang?FAN Gang | 2010 | Transactions ofNonferrous Metals Society of China2010，，： | 1 |
| 9 | Extractionand separation of indium and copper from zinc residue leach liquor by solvent extraction显示文摘 | Li Xingbin Wei Chang Deng Zhigan | 2015 | Separation and Purification Technology2015，156，： | 1 |
| 10 | Recovery of H2 SO4 from an acid leach solution by diffusion dialysis 显示文摘 | Wei Chang Li Xingbin Deng Zhigan et a l | 2010 | J Hazard Mater2010，176，： | 1 |
| 11 | Orientational Separation of Sulfur in Petroleum Coke by Alkali Calcining and Reflux Washing显示文摘The application of high-sulfur petroleum coke after desulfurization in aluminum electrolysis anodes is an important development trend. However, removing sulfur from high-sulfur petroleum coke is still a significant challenge.This study proposes alkali calcining and reflux washing to examine the impacts of temperature, particle size, the mass ratio of Na_(2)CO_(3) to NaOH, and total sodium addition on the desulfurization efficiency and mechanism. The results show that the desulfurization rate increases with increasing temperature, increasing total sodium content, and decreasing particle size. The addition of alkali can significantly reduce the opening-ring reaction temperature of thiophene and convert organic sulfur into inorganic sulfur(Na_(2)S). Three washing methods were compared, and reflux washing was selected to separate inorganic sulfur(Na_(2)S) from calcined petroleum coke. The sulfur content in petroleum coke decreased from 7.29% to 1.90%, with a desulfurization rate of 80.13% under optimal conditions. The petroleum coke was analyzed before and after desulfurization using X-Ray diffraction(XRD), Scanning Electron Microscopy(SEM), Infrared Spectroscopy(IR), Thermogravimetric Analysis and Differential Scanning Calorimetry(TG-DSC), Gaschromatography-mass Spectrometry(GC-MS). The results show that thiophene and benzothiophene in petroleum coke are decomposed and converted into octane and ethyl cyclohexane. These new observations are expected to provide further understanding and guidance for the utilization of highsulfur petroleum coke. | Su Song Li Minting Ye Fu Wei Chang Li Xingbin Deng Zhigan | 2023 | China Petroleum Processing & Petrochemical Technology2023，25，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员