半钢冶炼转炉终点钢水氮含量控制技术

›› 2015, Vol. 31 ›› Issue (5): 51-55.

半钢冶炼转炉终点钢水氮含量控制技术

陈均

攀钢集团研究院有限公司

收稿日期:2015-02-09 修回日期:2015-03-11 接受日期:1900-01-01 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 陈均 E-mail:foresttiger119@163.com

Nitrogen control technology of molten steel at the endpoint of semi-steel steelmaking converter

Pangang Group research institute Co., L td

Received:2015-02-09 Revised:2015-03-11 Accepted:1900-01-01 Online:2015-10-05 Published:2015-10-05

摘要/Abstract

摘要： 针对攀钢集团西昌钢钒有限公司半钢炼钢转炉终点钢水氮含量偏高的问题，对转炉冶炼过程钢水氮含量变化规律及其影响因素进行了研究，并提出了规范废钢加入量、减少补吹、采用专用底吹供气模式及冶炼后期采用发泡剂促进脱氮等氮含量控制技术措施。应用效果表明，采用转炉终点氮含量控制技术后，西钢钒200t转炉终点钢水平均氮质量分数由18×10-6以上降低到13×10-6以内，实现了氮质量分数小于15×10-6的稳定控制。转炉终点钢水氮含量技术已在西钢钒所有低氮品种钢上全面推广应用，为西钢钒低氮钢的冶炼提供了技术保障。

关键词: 半钢炼钢, 氮含量, 转炉终点

Abstract: To solve the problem of high nitrogen content at the endpoint of semi-steel steelmaking converter in Pangang Group Xichang Iron & Steel Co., Ltd., the variation and influence factor of nitrogen during blowing have been carried out. And then, control measures of nitrogen mass fraction were raised, such as controlling the scrap consumption, reducing reblowing, using custom-made bottom blowing system and charging foaming agent. Application effect indicated that by using these technologies, the average nitrogen mass fraction at the end-point of 200 t converter was reduced from over 18×10-6 to less than 13×10-6, and nitrogen mass fraction less than 15×10-6 was carried out. The technology has been widely use during the production of low nitrogen steel, which provide technical support for the production of low nitrogen steel.

Key words: steelmaking with semi-steel, nitrogen concentration, the end of the converter

陈均. 半钢冶炼转炉终点钢水氮含量控制技术[J]. , 2015, 31(5): 51-55.

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