ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2017, Vol. 38 ›› Issue (3): 41-43.

• 工艺技术 • 上一篇    下一篇

60t转炉用含铬铁水冶炼HRB400钢的工艺实践

姚娜,兴超   

  1. 济源职业技术学院冶金化工系,济源459000
  • 收稿日期:2016-12-17 出版日期:2017-06-01 发布日期:2022-07-20
  • 作者简介:姚娜(1979-),女,硕士(2009年安徽工业大学),2002年辽宁科技学院(专科)毕业,冶金技术研究。

Process Practice on 60t BOF Steelmaking Steel HRB400 by Using Hot Metal Bearing Chromium

Yao Na,Xing Chao   

  1. School of Metallurgy and Chemical Engineering, Jiyuan Professional and Technological College, Jiyuan 459000
  • Received:2016-12-17 Published:2017-06-01 Online:2022-07-20

摘要: 试验研究了铁水中铬含量(0.15%~0.27%)对脱磷率、Cr、Mn回收率和HRB400钢力学性能的影响。通过生产实践得出铁水最佳Cr含量为0.18%0.25%和炉渣(Cr2O3)为2%,通过合理控制炉渣成分(/%:45.84CaO,16.10SiO2,8.81MgO,1.60Al2O3,3.48P2O5,1.55Cr2O3,13.23TFe,R2.84),转炉脱磷率为80.33%,Cr的回收率为71.35%,转炉终点[Cr]为0.13%以上,钢中Si含量可降低0.02%,Mn含量降低0.03%,可有效利用残余元素Cr替代部分Si和Mn,降低了生产成本。

关键词: 60t转炉, 含铬铁水, 冶炼工艺, 实践

Abstract:  Effect of chromium content (0.15%~0.27% ) in hot metal on dephosphorization rate, yield of Cr and Mn, and mechanical properties of steel HRB400 has been tested and studied. It is obtained by production practice that the optimum Cr content in hot metal is 0.18%~0.25% and the suitable slag (Cr2O3) is 2% , with reasonable controlling slag ingredient (/%:45.84CaO, 16.10SiO2, 8.81MgO, 1.60Al2O3, 3.48P2O5, 1.55Cr2O3, 13.23TFe, R2.84) the BOF dephosphorization rate of liquid is 80.33% and the yield of Cr is 71.35% , BOF end [Cr] is more than 0.13% , the Si and Mn content in steel may decrease respectively 0.02% and 0.03% , it is available to replace partial Si and Mn by residual Cr to decrease the production cost.