高级别管线钢超低磷控制研究

特殊钢 ›› 2009, Vol. 30 ›› Issue (4): 8-10.

高级别管线钢超低磷控制研究

李太全，包燕平，刘建华，吴华杰，艾新港，安航

北京科技大学冶金与生态工程学院，北京100083

修回日期:2009-01-09 出版日期:2009-08-01 发布日期:2022-12-20
作者简介:李太全(1970-),男，博士研究生,1995年华东冶金学院毕业，纯净钢生产工艺和夹杂物粒子诱导相变研究

A Study on Controlling Super-Low Phosphorus in High Grade Pipeline Steel

Li Taiquan, Bao Yanping, Liu Jianhua, Wu Huajie, Ai Xingang ， An Hang

School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083

Revised:2009-01-09 Published:2009-08-01 Online:2022-12-20

摘要/Abstract

摘要： 对高级别管线钢超低磷生产工艺进行热力学计算,研究了转炉脱磷并控制增硫和LF脱硫并控制回磷的条件。当100 t转炉终点氧为0.055%时,在炉渣碱度大于4.5、(FeO)≤20%,渣中的硫、磷分别≤0.036 5%、1.18%情况下可控制转炉终点钢中硫磷≤0.004%。得到0.004%和0.006%钢中磷的精炼工艺条件为:精炼渣碱度5.5～6、(Al₂O₃)分别小于18.8%和21.0%、(FeO)分别大于1.72%和1.28%、(P₂O₅) ≤0.012%。

Abstract: Production process to get super-low phosphorus content in high grade pipeline steel has been calculated by thermodynamics to study the conditions for LD dephosphorization and controlling resulfurization and the conditions for LF desulfurization and controlling rephosphorization. As 100 t LD end [O] is 0. 055%, the converter end [S] and [P] well be less than 0. 004% in the conditions of slag basicity being more than 4.5, ( FeO) less than 20%, sulfur and phosphorus content in slag being respectively less than 0.036 5% and 1. 18%, During ladle furnace refining, 0. 004% or 0. 006% phosphorus content in steel are got in conditions of refining slag basicity 5. 5 ~6, (Al₂O₃) respectively less than 18. 8% and 21. 0% , ( FeO) respectively more than 1. 72% and 1. 28% , and ( P₂O₅ ) less than 0. 012%.

李太全, 包燕平, 刘建华, 吴华杰, 艾新港, 安航. 高级别管线钢超低磷控制研究[J]. 特殊钢, 2009, 30(4): 8-10.

Li Taiquan, Bao Yanping, Liu Jianhua, Wu Huajie, Ai Xingang, An Hang. A Study on Controlling Super-Low Phosphorus in High Grade Pipeline Steel[J]. Special Steel, 2009, 30(4): 8-10.