Preparation of high purity zinc from zinc oxide ore by vacuum carbothermic reduction

被引：13
|
作者：
Xiong, L. Z. [1 ,2 ,3 ]
Xiang, Y. H. [3 ]
Wu, X. W. [3 ]
He, Z. Q. [2 ,3 ]
Yin, Z. L. [1 ]
机构：
[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China
[3] Collaborat Innovat Ctr Manganese Zinc Vanadium In, Jishou 416000, Hunan, Peoples R China
来源：
VACUUM | 2017年 / 146卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Vacuum; Carbothermic reduction; Zinc oxide ore; Zinc yield; High-purity zinc; Metallurgy; CALCIUM-CARBONATE; SULFIDE; RECOVERY; KINETICS; CATALYST;
D O I：
10.1016/j.vacuum.2017.09.050
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of the yield and quality of Zn were investigated by vacuum carbothermic reduction from zinc oxide ore. Results indicate that initial moles ratio of C/Zn-Total, pressure of system, reaction time affect significantly the Zn yield from zinc oxide ore, while sintering temperature and sintering time have important influences on the quality of Zn. The optimal operating conditions are obtained as follows: the sintering temperature 973 K, the sintering time 50 min, the molar ratio of C/Zn-Total 2.5, the reaction temperature 1173 K, the pressure system lower than 20 kPa, the reaction time 50 min. Under the optimal conditions, the yield and purity of Zn are more than 95% and 99.995% respectively, suggesting the vacuum carbothermic reduction is a promising method to extract high-purity zinc from zinc oxide ore. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：200 / 205
页数：6
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