氧质量分数对于镁蒸气铁水脱硫的影响

doi:10.12068/j.issn.1005-3026.2020.06.011

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (6): 824-827.DOI: 10.12068/j.issn.1005-3026.2020.06.011

氧质量分数对于镁蒸气铁水脱硫的影响

苏建铭，豆志河，张廷安，刘燕

(东北大学多金属共生矿生态化冶金教育部重点实验室，辽宁沈阳110819)

收稿日期:2019-10-08 修回日期:2019-10-08 出版日期:2020-06-15 发布日期:2020-06-12
通讯作者: 苏建铭
作者简介:苏建铭(1989-)，男，辽宁鞍山人，东北大学博士研究生; 张廷安(1960-)，男，河南周口人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(U1702253，51774078，U1508217); 中央高校基本科研业务费专项资金资助项目(N172506009，N170908001).

Effect of Oxygen Concentration on Hot Metal Desulfurization with Magnesium Vapor

SU Jian-ming， DOU Zhi-he， ZHANG Ting-an， LIU Yan

Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education， Northeastern University， Shenyang 110819， China.

Received:2019-10-08 Revised:2019-10-08 Online:2020-06-15 Published:2020-06-12
Contact: ZHANG Ting-an
About author:-
Supported by:
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摘要/Abstract

摘要： 针对传统喷吹颗粒镁脱硫存在的镁利用率较低等问题，采用底吹镁蒸气进行铁水脱硫，旨在优化铁水脱硫的动力学条件，提高铁水脱硫过程中镁的利用率.对不同氧质量分数下硫的平衡质量分数进行了热力学计算，通过实验研究了氧质量分数对于铁水脱硫过程的动力学影响.结果表明:铁水中氧质量分数的降低有助于促进镁蒸气脱硫反应的进行，当氧质量分数为62×10^-6时，镁利用率可达78%，脱硫率可达82%.脱硫反应传质系数为0.0122m/s.

关键词: 镁蒸气, 铁水脱硫, 铝氧平衡, 硫氧平衡

Abstract: In view of the low utilization rate of magnesium generally obtained under traditional desulfurization processing， the method of bottom-blown magnesium vapor was used for hot metal desulfurization in order to optimize the dynamic conditions and to improve the utilization rate of magnesium in hot metal desulfurization. Thermodynamic calculation of the equilibrium concentration of sulfur under different oxygen concentrations was carried out， and the effect of oxygen concentration on the kinetics of hot metal desulfurization process was studied by experiments. The results show that the reduction of oxygen concentration in molten iron is helpful for promoting the desulfurization with magnesium vapor. When oxygen concentration arrives 62×10^-6， the utilization rate of magnesium can reach 78%， leading to a desulfurization rate of 82% and a mass transfer coefficient of desulfurization of 0.0122m/s.

Key words: magnesium vapor, hot metal desulfurization, aluminum-oxygen balance, sulfur-oxygen balance

中图分类号:

TF769

苏建铭，豆志河，张廷安，刘燕. 氧质量分数对于镁蒸气铁水脱硫的影响[J]. 东北大学学报:自然科学版, 2020, 41(6): 824-827.

SU Jian-ming， DOU Zhi-he， ZHANG Ting-an， LIU Yan. Effect of Oxygen Concentration on Hot Metal Desulfurization with Magnesium Vapor[J]. Journal of Northeastern University Natural Science, 2020, 41(6): 824-827.

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氧质量分数对于镁蒸气铁水脱硫的影响

Effect of Oxygen Concentration on Hot Metal Desulfurization with Magnesium Vapor

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