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 (2): 1-4.

• 试验研究 •    下一篇

低碳低硅铝镇静钢LF顶渣硫分配比预报模型

孙彦辉, 钱宇婧， 李啸磊， 蔡开科   

  1. 北京科技大学冶金与生态工程学院，北京100083
  • 收稿日期:2010-11-12 出版日期:2011-04-01 发布日期:2022-11-08
  • 作者简介:孙彦辉(1971-),男，博士，1994年北京科技大学毕业，炼钢及连铸新工艺研究。
  • 基金资助:

A Prediction Model for Sulfur Partition Ratio of LF Slag for Low-Carbon Low-Silicon Al-Killed Steel Refining

Sun Yanhui, Qian Yujing, Li Xiaolei, Cai Kaike   

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083
  • Received:2010-11-12 Published:2011-04-01 Online:2022-11-08

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摘要： 根据钢厂100 t BOF-吹氩-LF-RH-Ca处理流程生产优质深冲(DDQ)级深冲热轧带钢SPHE(%:≤0.07C、≤0.03Si、0.20～0.30Mn、≤0.020P、≤0.010S、0.02～0.06Als)时Ca处理过程S含量过高的情况,通过KTH硫容量模型,分析了CaO/SiO2、Al2O3和MgO对精炼渣硫分配比LS的影响,建立了CaO-MgO-SiO2-Al2O3四元渣系脱硫模型,优化LF脱硫的精炼渣成分。结果表明,使用优化后的精炼渣(%:50CaO、6MgO、≤5SiO2、30～35Al2O3),LF精炼钢水的脱硫率≥80%。模型预测值与实测值误差为±5%的占80%。

Abstract: According to the situation of over-high S content in deep drawing hot rolled DDQ class SPHE strip steel (%: ≤O. 07C, ≤0. 03Si, 0. 20 〜0. 30Mn, ≤0. 020P, ≤0. 010S, 0. 02 ~0. 06Als) produced by 100 t BOF-argon stir- ring-LF-RH-Ca treatment flow sheet, the effect of CaO/SiO2, A12O3 and MgO on refining slag sulfur partition ratio Ls is analyzed by KTH sulfur capacity model and the desulphurization model of CaO-MgO-SiO2 -Al2 O3 quaternary slag series is established to optimize the ingredient of LF refining slag for desulphurization. Results show that after using optimizing refining slag (%: 50CaO, 6MgO, ≤5SiO2, 30 - 35Al2O3), the desulphurization ratio of LF refining liquid steel is ≥80%, the ±5% error between prediction value by model and measured value makes up ≥80% of total prediction value.

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