Kinetics of the Leaching Process of an Australian Gibbsitic Bauxite by Hydrochloric Acid

被引：5
|
作者：
Zhao, Aichun [1 ,2 ]
Zhang, Ting-an [3 ]
Lv, Guozhi [3 ]
Tian, Wenyan [4 ]
机构：
[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Sci & Technol, Collaborat Innovat Ctr Taiyuan Heavy Machinery Eq, Taiyuan 030024, Peoples R China
[3] Northeastern Univ, Key Lab Ecol Utilizat Multimet Intergrown Ores, Minist Educ, Shenyang 110819, Peoples R China
[4] Taiyuan Univ Sci & Technol, Sch Elect Informat Engn, Taiyuan 030024, Peoples R China
来源：
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2016年 / 2016卷
关键词：
CHEMISTRY;
D O I：
10.1155/2016/5813542
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Gibbsitic bauxite from Australia was leached by hydrochloric acid in this work. Analysis on kinetics for the extraction of Al2O3 was quantitatively studied. It was concluded that the hydrochloric acid leaching process of gibbsitic bauxite was controlled by chemical reaction. Moreover, the mechanism for the dissolution followed the equation, ln k = 39.44 - 1.66 x 10(4) (1/T),with an apparent activation energy of 137.90 kJ/mol, according to the equation of k = Ae(-Ea/RT). This work aims to provide a good theory support for the process control by using a new method of alumina production from the low grade bauxite.
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页数：6
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