白云鄂博巴润矿配碳还原动力学研究

师旭超; 赵增武; 金永丽

doi:10.7513/j.issn.1004-7638.2015.06.020

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白云鄂博巴润矿配碳还原动力学研究

doi: 10.7513/j.issn.1004-7638.2015.06.020

1. 内蒙古科技大学材料与冶金学院, 内蒙古包头 014010;
2. 内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室, 内蒙古包头 014010

基金项目:

国家自然科学基金资助项目(51464040), 内蒙古自然科学基金重大项目(2012JQ02)。

详细信息

作者简介:
师旭超(1990-),男,汉,内蒙古赤峰人,研究生,工学硕士,主要从事差热分析及冶金工艺研究。

中图分类号: TF533
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- 文章访问数: 7
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- 被引次数: 0
出版历程
- 收稿日期: 2015-04-23

Investigation on the Reduction Kinetics of Carbon Addition to Baiyan Obo Barun Ore by TG-MS Analysis

1. College of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
2. Inner Mongolia Key Laboratory of Integrated Exploitation of Baiyan Obo Multi-Metal Resources, Baotou 014010, Inner Mongolia, China

摘要

摘要: 以白云鄂博巴润矿为原料,在1 323~1 573 K下,通过热重质谱联用技术研究巴润矿的配碳还原过程以及还原动力学,对比不同矿物在还原过程中以碳的气化反应为限制环节所得到的活化能。研究结果表明,白云鄂博巴润矿配碳还原过程分为三个阶段,同时对应三个温度区间。根据Arrhenius方程计算出的以碳气化反应和气相扩散为限制环节的活化能分别为96.8、76.5 kJ/mol,在本研究条件下的配碳还原由碳的气化反应控制。对比Fruehan、Donskoi等研究学者所得到的结论,白云鄂博巴润矿在以碳的气化反应为限制环节时所计算的活化能偏低。
- 白云鄂博矿 /
- 直接还原 /
- 配碳量 /
- 热重质谱法 /
- 动力学
Abstract: Taking Baiyan Obo Barun ore as raw material,the carbon reduction process and its kinetics had been studied by by TG-MS analysis under 1 323~1 573 K,and the different minerals activation energy in the reduction process with the carbon gasification reaction as controlling process had been investigated. The present results indicate that the carbon reduction process of Baiyan Obo Barun ore is divided into three stages which are corresponding to three temperature ranges. According to Arrhenius equation,activation energy of the carbon gasification reaction and the gas diffusion was calculated at 96.8 kJ/mol and 76.5 kJ/mol respectively. It is thus concluded that the carbon reduction was controled by carbon gasification reaction under the investigated conditions. In addition,compared with results of Fruehan,Donskoi and other researchers the calculated activation energy of Baiyan Obo Barun ore is relatively low when taking the carbon gasification reaction as controlling process.
- Baiyan Obo ore /
- direct reduction /
- C/O /
- TG-MS /
- kinetics