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有色金属(冶炼部分):2018,(10):31-35
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高钛铝土矿高压水化条件下A12O3溶出动力学研究
李涛,金会心,肖冲,刘虹伶
(贵州大学材料与冶金学院,贵州大学材料与冶金学院,贵州大学材料与冶金学院,贵州大学材料与冶金学院)
Study on A12O3 Dissolution Kinetics of High Titanium Bauxite under High Pressure Hydration Conditions
litao,jinhuixin,xiaochong and liuhongling
(College of Materials and Metallurgy, Guizhou University,,,)
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投稿时间:2018-07-13     修订日期:2018-07-16     录用日期:2018-07-17     网络发布日期:2018-09-19
中文摘要: 采用高压水化法处理高钛型铝土矿,从动力学角度来分析溶出过程。经过对试验结果计算、拟合作图,得出铝矿物溶出表观活化能为23.431 kJ/mol,溶出过程控速环节为内扩散,表观速率常数kg=0.6381exp(-23421/RT)。高压水化法溶出高钛铝土矿过程中铝矿物的溶出动力学方程为: 1- 2/3 X-〖(1-X)〗^(2/3)=0.6381C_NaOH^3.28587 r^0.58531 e^(-23421/RT) t
Abstract:High titanium bauxite was treated by high pressure hydration method. Its dissolution process was analyzed from point of view of dynamic. Through calculation of experimental results and quasi cooperative graph, it is concluded that the apparent activation energy of dissolution of aluminum minerals is 23.431 kJ/mol, which shows dissolution process of aluminum minerals is controlled by internal diffusion with apparent rate constant kg=0.6381exp(-23421/RT). The kinetic equation of dissolution of aluminum minerals in the process of high hydrated digestion of high titanium bauxite is 1- 2/3 X-〖(1-X)〗^(2/3)=0.6381C_NaOH^3.28587 r^0.58531 e^(-23421/RT) t
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基金项目:国家自然科学基金资助项目(51564003,51474079)
引用文本:
李涛,金会心,肖冲,刘虹伶.高钛铝土矿高压水化条件下A12O3溶出动力学研究[J].有色金属(冶炼部分),2018(10):31-35.
litao,jinhuixin,xiaochong,liuhongling.Study on A12O3 Dissolution Kinetics of High Titanium Bauxite under High Pressure Hydration Conditions[J].Nonferrous Metals (Extractive Metallurgy),2018(10):31-35.

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