LF两步造渣工艺对C82DA钢中硫和铝的影响

doi:10.13228/j.boyuan.issn0449-749x.20200083

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Abstract In order to study the effect of technology on sulfur and aluminum in C82DA steel. The process of desulfurization and aluminum control of cord steel in LF was studied. The results show that with the decrease of refining basicity, the desulfurization rate becomeslower. When basicity is about 1.6, w((Fe_tO)+(MnO)) in slag is about 1%, basically reaching the critical value of desulfurization.When basicity is about 1.2, sulfur recovery begins with refining time. The decrease of w([Al_s]) in molten steel gradually decreases with the decrease of basicity. When basicity is greater than 2.2, the decrease of w([Al_s]) is significant. When basicity is less than 1.6, the effect on w([Al_s]) is no longer obvious. The LF adopts two-step slag making process, high basicity desulfurization in the early stage and low basicity aluminum reduction in the later stage. When basicity is reduced from 2.2 to about 1.2, w([S]) and w([Al_s]) are controlled at the lower level of 0.011% and 0.001 6% respectively.

Key words： two-step slag making process basicity tire cord steel inclusions modification

Received: 04 March 2020

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	LIU Zong-hui
	QIN Feng-ting
	REN Jian-zhong
	ZHU Miao-yong

Cite this article:

LIU Zong-hui,QIN Feng-ting,REN Jian-zhong等. Effect of two-step slag making refining on sulfur and aluminum in C82DA steel[J]. Iron and Steel, 2020, 55(7): 78-84.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20200083 OR http://www.chinamet.cn/Jweb_gt/EN/Y2020/V55/I7/78

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