| 高级别管线钢超低硫控制研究 |
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| 引用本文： | 李太全,包燕平,吴华杰,刘建华.高级别管线钢超低硫控制研究[J].钢铁,2009,44(5):35-0. |
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| 作者姓名： | 李太全 包燕平 吴华杰 刘建华 |
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| 作者单位： | 北京科技大学冶金与生态工程学院， 北京 100083 |
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| 摘 要： | 利用光学碱度计算了1873 K时CaO SiO2 Al2O3 MgO(10%)四元精炼渣系的硫容量，从理论上分析了精炼高级别管线钢超低硫控制的工艺条件，绘制出精炼渣硫容量、渣中硫、钢中溶解氧与钢中硫的关系图。分析了某钢厂LF VD高级别管线钢生产工艺，LF1（LF炉精炼初期）、LF2（LF炉精炼末期）和VD精炼渣的氧化能力w（（MnO+FeO））分别为11.92%、2.00%和1.1０%，精炼渣碱度分别为3.195、6.250和7.600，精炼渣的曼内斯曼指数M（R/w(Al2O3）)分别为0.09、0.17和0.18，精炼渣硫容量CS′分别为0.010、0.022和0.023。钢中硫的质量分数从LF1的80×10-6，降低到LF2的（20～30）×10-6 ，并稳定在VD末期的20×10-6以下，与理论计算相符。
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| 关 键 词： | 硫容量 精炼渣 光学碱度 |
Controlling of Super-Low Sulfide of High Grade Pipeline Steel |
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| LI Tai-quan,BAO Yan-ping,WU Hua-jie,LIU Jian-hua.Controlling of Super-Low Sulfide of High Grade Pipeline Steel[J].Iron & Steel,2009,44(5):35-0. |
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| Authors: | LI Tai-quan BAO Yan-ping WU Hua-jie LIU Jian-hua |
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| Affiliation: | Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 10083, China |
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| Abstract: | The variation of sulfide capacity with composition in the slag system CaO-SiO2-Al2O3-MgO(10%) at 1 873 K was calculated by using the optical basicity.The high grade pipeline steel refining process arts to control super-low sulphide are analysised and the relationship figure of sulphide capacity,(%S), and is drawn.A LF-VD refining process was analysised.During the process of LF1(the primary state of LF process),LF2(the end of LF process) and VD,the(MnO+FeO)content of top-slag are 11.92%,2.00% and 1.1%;the ba... |
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| Keywords: | sulfide capacity refining slag optical basicity |
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