Effects of Pre-oxidation on the Kinetics of Iron Leaching from Ilmenite in Hydrochloric Acid Solution

被引：3
|
作者：
Xiang, Junyi [1 ]
Huang, Qingyun [2 ]
Lv, Wei [1 ]
Lv, Xuewei [1 ]
Bai, Chenguang [1 ]
机构：
[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China
来源：
RARE METAL TECHNOLOGY 2018 | 2018年
关键词：
Ilmenite; Leaching; Hydrochloric acid; Kinetics; Pre-oxidation; OXIDATION-KINETICS; ORE; CONCENTRATE; PANZHIHUA;
D O I：
10.1007/978-3-319-72350-1_29
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
The kinetics of iron leaching from ilmenite in hydrochloric acid solutions were investigated. The effects of pre-oxidation roasting, leaching temperature, and holding time on iron extraction rate were determined. The results obtained show that the extraction of iron is significantly enhanced by pre-oxidation roasting and increasing leaching temperature from 75 to 108 degrees C. The results of the kinetic analysis of the leaching data indicate that the reaction is controlled by diffusion through the product layer. The apparent activation energy for the extraction of iron has been calculated to be 62.5 and 55.1 kJ/mol for untreated and oxidized ilmenite, respectively.
引用
收藏
页码：301 / 307
页数：7
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