Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第26卷    第6期    总第207期    2016年6月

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文章编号:1004-0609(2016)-06-1350-06
常压碳热还原含铟渣中三氧化二铟的动力学
谢富春1, 2,尹周澜1,丁治英1,谭 军1,刘常青1,张平民1

(1. 中南大学 化学化工学院,长沙 410083;
2. 湖南工程学院 机械工程学院,湘潭 411101
)

摘 要: 在常压下研究碳热还原氧化铟的动力学。结果表明:增大碳与含铟渣的质量比或提高反应温度,铟还原率增大。当反应温度为1523 K,碳与含铟渣质量比为0.5、反应时间为60 min时,含铟渣铟的还原挥发率达到 85.21%;在常压下,碳与含铟渣质量比达到0.5,含铟渣平均粒度是80 μm,石墨颗粒平均度约为30 μm,反应温度在1373~ 1523 K区间内,碳热还原含铟渣的还原挥发速率由界面化学反应所控制,其表观活化能为168.67 kJ/mol。

 

关键词: 碳热还原;含铟渣;动力学;铟;熔池熔炼

Atmospheric carbon thermoreduction kinetics of In2O3 of slag containing In
XIE Fu-chun1, 2, YIN Zhou-lan1, DING Zhi-ying1, TAN Jun1, LIU Chang-qing1, ZHANG Ping-min1

1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Department of Mechanical Engineering, Hunan Institute of Engineering, Xiangtan 411101, China

Abstract:The kinetics of atmospheric carbothermic reduction of indium oxide slag was investigated. The results indicate that the reduction volatilization ratio of indium increases with the quality ratio of mass ratio of C and slag containing In or the reaction temperature increasing, the highest indium reduction 85.21% was realized under the condition of the mass ratio of C and slag containing In of 0.5 at 1523 K after 60 min. The interface reaction is the controlling step of the overall reduction process and the activation energy is estimated to be 168.67 kJ/mol when the mass ratio of C and slag containing In is o.5, the average size of slag is 80 μm, the average size of graphite is 30 μm and the reaction temperature is from 1273 to 1523 K.

 

Key words: carbon thermoreduction; indium oxide slag; kinetics; indium; bath smelting

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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