Experimental study on sulfur removal from ladle furnace refining slag in hot state by blowing Air

被引：0
作者：
Li-hua Zhao [1 ]
Lu Lin [2 ]
Qi-fan Wu [1 ]
机构：
[1] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing
[2] State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing
来源：
International Journal of Minerals Metallurgy and Materials | 2016年 / 23卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
steelmaking; refining; slag; sulfur removal; oxidation; resource utilization;
D O I：
暂无
中图分类号：
X757 [黑色金属冶炼];
学科分类号：
083002 ;
摘要：
In view of the present problem of sulfur enrichment in the metallurgical recycling process of ladle furnace(LF) refining slag, a simple and efficient method of removing sulfur from this slag was proposed. The proposed method is compatible with current steelmaking processes. Sulfur removal from LF refining slag for SPHC steel(manufactured at a certain steel plant in China) by blowing air in the hot state was studied by using hot-state experiments in a laboratory. The FactS age software, a carbon/sulfur analyzer, and scanning electron microscopy in conjunction with energy-dispersive X-ray spectroscopy were used to test and analyze the sulfur removal effect and to investigate factors influencing sulfur removal rate. The results show that sulfur ions in LF refining slag can be oxidized into SOby Oat high temperature by blowing air into molten slag; SOproduction was observed to reach a maximum with a small amount of blown Owhen the temperature exceeded 1350°C. At 1370°C and 1400°C, experimental LF refining slag is in the liquid state and exhibits good fluidity; under these conditions, the sulfur removal effect by blowing air is greater than 90wt% after 60 min. High temperature and large air flow rate are beneficial for removing sulfur from LF refining slag; compared with air flow rate, temperature has a greater strongly influences on the sulfur removal.
引用
收藏
页码：33 / 39
页数：7
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