Decomposition reaction kinetics of Baotou RE concentrate with concentrated sulfuric acid at low temperature
来源期刊：Rare Metals2010年第2期
论文作者：WANG Xiuyana, LIU Jiemina, LI Meib, FAN Huilia, and YANG Qishana a Department of Chemistry, University of Science and Technology Beijing, Beijing , China b School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou , China
文章页码：121 - 125
摘 要：Baotou RE concentrate was decomposed with concentrated sulfuric acid by controlling the roasting temperature below 500°C.Thermogravimetry-differential thermal analysis（TG-DTA） and chemical analytical methods were used to study the thermal decomposition process and the thermal decomposition effect.The Freeman-Carroll method was applied to analyze the TG-DTA curves.The activation energy, reaction order, and reaction frequency factor at different stages were calculated.The Satava method was used to deduce the reaction mechanism and the relative reaction rate during the thermal decomposition process.
WANG Xiuyana, LIU Jiemina, LI Meib, FAN Huilia, and YANG Qishana a Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China b School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014110, China
摘 要：Baotou RE concentrate was decomposed with concentrated sulfuric acid by controlling the roasting temperature below 500°C.Thermogravimetry-differential thermal analysis（TG-DTA） and chemical analytical methods were used to study the thermal decomposition process and the thermal decomposition effect.The Freeman-Carroll method was applied to analyze the TG-DTA curves.The activation energy, reaction order, and reaction frequency factor at different stages were calculated.The Satava method was used to deduce the reaction mechanism and the relative reaction rate during the thermal decomposition process.
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