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Dissolution kinetics and thermodynamic analysis of vanadium trioxide during pressure oxidation

《稀有金属:英文版》2012年 第3期 | Zhou Xuejiao Wei Chang Xia Wentang Li Minting Li Cunxiong Deng Zhigan Xu Hongsheng   Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 China School of Metallurgical and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China
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摘 要: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 l...
【分 类】【数理科学和化学】 > 化学 > 无机化学
【关键词】 HYDROMETALLURGY 动力学 氧压力酸沥滤 热力学
【出 处】 《稀有金属:英文版》2012年 第3期 296-302页 共7页
【收 录】 中文科技期刊数据库