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 ›› 2011, Vol. 32 ›› Issue (5): 1-4.

• 试验研究 •    下一篇

12CaO•7Al2O3基精炼渣脱硫试验

曹余良，王攀峰，耿建林，陈德胜，韦士琨   

  1. 南京钢铁股份有限公司中厚板卷厂，南京 210035
  • 收稿日期:2011-04-01 出版日期:2011-10-01 发布日期:2022-10-26
  • 作者简介:曹余良(1983-)，男，硕士，助理工程师，2009年西安建筑科技大学毕业，二次精炼研究.

A Test on Desulphurization of 12CaO•7Al2O3 Based Refining Slag

Cao Yuliang , Wang Panfeng , Geng Jianlin , Chen Desheng , Wei Shikun   

  1. Medium and Heavy Plate Coil Plant, Nanjing Iron and Steel Co Ltd, Nanjing 210035
  • Received:2011-04-01 Published:2011-10-01 Online:2022-10-26

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摘要： 在试验室用MoSi2井式电阻炉试验研究了12CaO·7Al2O3的预熔工艺和含10%～20%BaO、2%～6%MgO、1%～3%Li2O,(12CaO·7Al2O3)/SiO2=8～10的12CaO·7Al2O3基精炼渣对成分为(%)0.23C、1.29Mn、0.44Si、0.026P、0.023S、0.04Mo、0.02Cr、0.06Cu的低碳钢的脱硫能力。结果表明,12CaO·7Al2O3基预熔精炼渣具有较好的脱硫能力,在1590℃加入量为3%的条件下,能将钢液中的硫含量从0.030%降低到0.006%,脱硫率80.00%。通过运用正交方法对渣成分进行优化,得出12CaO·7Al2O3基精炼渣的优化渣系为:15%BaO,4%MgO,3%Li2O,(12CaO·7Al2O3)/SiO2=9。

关键词: 12CaO·7Al2O3 , 精炼渣, 脱硫, 二次精炼

Abstract: The pre-melting process of 12CaO·7Al2O3 and the desulphurizing ability of 12CaO·7Al2O3 based refining slag containing 10%-20%BaO, 2%-6% MgO, 1%-3%Li2O and (12CaO·7Al2O3)/SiO2=8～10 on low carbon steel liquid (% ：0.23C, 1.29Mn, 0. 44Si, 0. 026P, 0.023S, 0.04Mo, 0.02Cr, 0.06Cu) have been tested and studied by a MoSi2 shaft type electric resistance furnace in laboratory. Results show that the 12CaO·7Al2O3 based pre-melting refining slag has better desulphurizing ability, with adding 3% slag at 1590 °C , the sulphur content in liquid can decrease to 0.006% from 0.030% , i. e. the ratio of desulphurization is 80.00% . With optimization of slag ingredient by using orthogonal method, it is obtained that the optimizing slag series of 12CaO·7Al2O3, based refining slag is 15% BaO, 4% MgO, 3%Li2O and (12CaO·7Al2O3)/SiO2=9.

Key words: 12CaO·7Al2O3 , Refining Slag, Desulphurization, Secondary Refining

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