氧气转炉出钢脱硫-LF精炼生产超低硫钢的工艺

特殊钢 ›› 2006, Vol. 27 ›› Issue (6): 44-46.

氧气转炉出钢脱硫-LF精炼生产超低硫钢的工艺

郝宁¹,王新华¹,王海涛¹,李宏¹,崔爱民²,王国连²,龚坚²,李林²

1北京科技大学冶金与生态工程学院，北京100083;
2首钢集团总公司，北京100041

收稿日期:2006-06-01 出版日期:2006-11-01 发布日期:2023-03-02
作者简介:郝宁(1979-),女，北京科技大学2003届博士生，从事电弧炉、精炼炉冶炼等工艺研究。

Process for Production of Ultra-Low Sulphur Steel by BOF Tapping Desulphurizing-LF Refining

Hao Ning¹,Wang Xinhua¹,Wang Haitao¹,Li Hong¹,Cui Aimin²,Wang Guolian²,Gong Jian²，Li Lin²

1School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083;
2 Shougang Group Corp,Beijing 100041

Received:2006-06-01 Published:2006-11-01 Online:2023-03-02

摘要/Abstract

摘要： 因210tBOF冶炼终点NVA32(%:0.12～0.18C、1.30～1.60Mn)钢中硫含量由0.005%升高至0.020%,通过BOF出钢过程加入1000kg二元合成渣CaO-CaF₂、200kg铝粒,并加入硅锰和硅铝钡合金,可使钢中硫含量降低0.007%～0.008%,脱硫率达30%。在LF精炼时,通过进一步加入合成渣800kg,600～900L/min吹氩,加热后喂600m硅钙线,30～45L/min吹氩10min,终渣碱度R=4.5～5.5,钢中硫含量进一步降低至0.001%～0.002%。

关键词: 氧气转炉, 出钢脱硫 , LF 精炼, 超低硫钢

Abstract: Because the sulphur content in steel NVA32(0. 12~0. 18C,1.30～1.60Mn)increases to 0.020% at 210 t BOF melting end point from original 0.005%,it shall be added 1000 kg binary synthetic slag CaO-CaF₂ and added 200 kg aluminium during BOF tapping and added Si-Mn alloy and Si-Al-Ba alloy to decrease sulphur content in steel by 0.007%～0.008% with desulphurization rate up to 30%.During LF refining,sulphur content in steel further decreases to 0.001%～0.002% by further added 800 kg synthetic slag,blown argon 600~900 L/min,after heating fed 600 m silicon- calcium wire then blown argon 30~45 L/min for 10 min with end slag basicity R = 4.5～5.5.

郝宁, 王新华, 王海涛, 李宏, 崔爱民, 王国连, 龚坚, 李林. 氧气转炉出钢脱硫-LF精炼生产超低硫钢的工艺[J]. 特殊钢, 2006, 27(6): 44-46.

Hao Ning, Wang Xinhua, Wang Haitao, Li Hong, Cui Aimin, Wang Guolian, Gong Jian, Li Lin. Process for Production of Ultra-Low Sulphur Steel by BOF Tapping Desulphurizing-LF Refining[J]. Special Steel, 2006, 27(6): 44-46.

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