大型复吹转炉造渣工艺工业试验

蔡伟; 杨利彬; 王东; 于文涛; 郑丛杰; 佟溥翘

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大型复吹转炉造渣工艺工业试验

1. 钢铁研究总院工艺所, 北京, 100081;
2. 首钢迁安钢铁有限责任公司炼钢分厂, 河北迁安, 064404

详细信息

作者简介:
蔡伟(1986—),男,四川简阳人,硕士研究生,主要从事转炉冶炼造渣工艺、转炉溅渣护炉工艺及转炉顶底复合吹炼技术研究。

中图分类号: TF729
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出版历程
- 收稿日期: 2011-12-19

Industrial Test of Slagging Process in Large-sized Combined Blowing BOF

1. Metallurgical Department of Central Iron and Steel Research Institute, Beijing 100081, China;
2. Steelmaking Plant of Shougang Qian'an Iron and Steel Co. Ltd., Qian'an 064404, Hebei, China

摘要

摘要: 通过工业试验对迁钢210 t复吹转炉冶炼过程钢样成分、渣样成分和炉渣岩相进行分析,研究了两种造渣工艺(方案A和方案B)的成渣过程及脱磷状况。对比两种造渣工艺的工业试验效果表明高枪位的造渣工艺方案B优于方案A;转炉冶炼前期化渣速度快,冶炼前、中期脱磷率高12.6%;高熔点矿相少,炉渣流动性较好;成渣路线更加平稳;方案B较方案A石灰消耗少11.5 kg/t,L_p高5.42,转炉平均脱磷率高2.7%。
- 复吹转炉 /
- 造渣 /
- 岩相 /
- 成渣路线
Abstract: By analyzing the composition of liquid steel and the composition and petrographical characteristics of slag,the variation of slag composition during oxygen blowing,and the slagging processes and dephosphorization with the two slagging methods(scheme A and B) applied to the 210 t combined blowing BOF were investigated.A comparison between test results of the two slagging methods showed that scheme B was better than scheme A: first,the slag melted more rapidly at early smelting stage and the dephosphorization rate at early and medium smelting stages was 12.6% higher;second,the slag fluidity was better and mineral phase with high melting point was found less;third,the slag composition fluctuated more smoothly;fourth,the consumption of lime decreased by 11.5 kg/t,the L_p increased by 5.42,and the average dephosphorization rate of BOF increased by 2.7%.
- BOF /
- slagging /
- petrographical characteristics /
- slagging path