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结合莱钢J55、L360等低硫钢冶炼的生产实践,分析了“铁水预脱硫处理—转炉—LF钢包精炼—连铸”全流程各工艺环节的硫含量控制技术,指出铁水预脱硫处理、转炉冶炼、LF精炼过程硫含量控制技术是低硫钢冶炼的关键技术环节。通过采用全流程硫含量控制技术,生产出了硫的质量分数最低为0.002%的低硫钢。
According to the production practice of low sulfur steel smelting such as Laiwu Steel J55, L360 and so on, the control technology of sulfur content in each process of “hot metal desulphurization - converter - LF ladle refining - continuous casting” is analyzed. It is pointed out that premelting desulphurization , Converter smelting, sulfur content control technology in LF refining process is the key technology link of smelting low-sulfur steel. Through the use of whole-process sulfur content control technology, low-sulfur steel with a minimum sulfur content of 0.002% was produced.