马钢超低硫钢的生产工艺研究

来源期刊：钢铁2010年第6期

论文作者：沈昶 潘远望 张晓峰

文章页码：41 - 43

关键词：超低硫钢； 硫平衡； 深脱硫

Key words：ultra-low sulphur (ULS) steel； sulfur balance； deep desulphurization

摘    要：在马钢生产X70、X80管线钢为平台的超低硫钢生产工艺的基础上,分别对转炉、LF精炼过程钢水硫含量控制进行了分析研究,研究结果表明转炉吹炼过程增硫主要来自于铁水脱硫渣和废钢中带入的硫,LF炉深脱硫主要取决于钢包顶渣的控制和强搅脱硫的搅拌功。通过工艺调整,使生产X70、X80管线钢时LF炉终点w_[S]可稳定控制在0.005 0%以下,平均w_[S]为0.001 1%。

Abstract: The techniques of the ultra low sulfur steel based on the production of X70/X80 pipe-line steel was investigated.And the control of [S] content during the process from BOF to LF was analyzed.The increase of the content of sulfur during BOF blowing is mainly caused by molten iron slag after pretreatment and scrap,the LF deep desulphurization depends on the control of the top slag and the strong stirring power.By technologic adjustment,during the production of X70/X80 pipe-line steel,the [S] at the end of LF is controlled stably below 0.005 0%,and the average [S] is 0.001 1%.