炼钢过程底吹气体的冶炼效果对比

doi:10.13228/j.boyuan.issn0449-749x.20150604

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Abstract Based on thermodynamics and kinetics of bottom blowing during the steelmaking process， the smelting effects of bottom blowing with O2， CO2， Ar and N2 were studied. It is found that the bottom blowing Ar or N2 does not react with the elements of molten pool. The temperature of liquid steel basically remains unchanged， while the nitrogen content in liquid steel is high. However， when the bottom blowing gas is O2 or CO2， the decarburization rate and the content of nitrogen and hydrogen in liquid steel are basically the same， the temperature of molten pool is raised by 162 and 45 ℃， respectively. Compared with O2， if CO2 is injected from the bottom of furnace， the amount of steelmaking dust will be decreased，[w((TFe))]in slag will be decreased by 2.50%，[w((O))]will be decreased by 90.2%.

Key words： steelmaking bottom blowing gases thermodynamics dynamics

Received: 21 December 2015 Published: 29 August 2016

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	Articles by authors
	LI Zhi-Zheng
	ZHU Rong
	LIU Run-Zao
	YU Xue-Liang

Cite this article:

LI Zhi-Zheng,ZHU Rong,LIU Run-Zao等. Comparison of smelting effects by bottom blowing different gases[J]. Iron and Steel, 2016, 51(9): 40-45.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20150604 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I9/40

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