›› 2015, Vol. 31 ›› Issue (5): 47-50.

• 生产实践 • 上一篇    下一篇

石灰石部分替代石灰转炉炼钢技术研究与应用

张春杰1,郝强2,王玉生3,毛素娟2   

  1. 1. 河北钢铁集团-邯钢公司
    2.
    3. 河北邯钢集团邯宝公司炼钢厂(河北邯郸市复兴路232号 邮编:056015)
  • 收稿日期:2015-04-23 修回日期:2015-06-02 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: 张春杰 E-mail:zhangchunjie10@126.com

Research and application of converter steelmaking with limestone partial replacement lime

  1. 1. Hebei Iron & Steel Group HanGang Company
    2.
    3. The Steel-making plant of Hanbao of Hansteel Co. Handan 056015
  • Received:2015-04-23 Revised:2015-06-02 Accepted:1900-01-01 Online:2015-10-05 Published:2015-10-05

摘要: 介绍了河北钢铁集团邯郸钢铁集团有限责任公司260t转炉石灰石替代部分石灰直接造渣炼钢工艺研究和应用情况,分析了满足石灰石煅烧要求的铁水温度,石灰熔化造渣机理,石灰石分解熔化造渣机理,石灰石冷却效应及合理加入量等。研究表明石灰石只能部分替代石灰,在此基础上,进行了石灰石部分替代石灰直接造渣炼钢生产试验。结果表明:石灰石平均加入量在3.5~3.8t/炉工况下,普碳钢和低碳钢的脱磷率有所提高,分别由84.8%,89.1%提高到87.0%,90.1%;石灰消耗分别由10.3,10.2t/炉降低到8.4,8.5t/炉;煤气回收达到150m3/t;吨钢成本降低2元以上。

关键词: 石灰石, 炼钢, 石灰, 脱磷率, 造渣

Abstract: The process and application of 260 t converter steelmaking with limestone partial replacement lime were researched in Handan Iron and Steel Company,Hebei Iron and Steel Group Co.,Ltd. The temperature of molten iron which meet the limestone calcinations requirements, lime melting mechanism of slag formation, limestone decomposition mechanism of melting slag, limestone cooling effect and reasonable addition were analyzed. The research showed that limestone could partly replace lime, steelmaking production tests with limestone instead of part lime slag forming were carried out.The results showed that when limestone average addition 3.5~3.8t per furnace, the dephosphorization rate of plain carbon steel and low carbon steel increased respectively from 84.8% and 89.1% to 87%, 90.1%, consumption of lime respectively reduced from 10.3, 10.2t per furnace to 8.4, 8.5t per furnace, gas recovery reached 150m3/t, the cost decreased more than 2 yuan/t.

Key words: limdstone, steelmaking, lime, dephosphorization rate, slagging