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基于某厂脱磷转炉的生产数据,对回硫机理进行了热力学分析。结果表明:脱磷转炉具有明显的回硫趋势,通过降低入炉铁水硫含量与控制辅料可实现低硫出钢。工业生产实践表明,在KR深脱硫和扒渣程度良好的情况下,通过使用低硫废钢,同时取消了冷固球团和矸石煤粉的加入,可以将脱磷转炉终点w(S)控制在0.003%以下。
Based on the production data of a plant dephosphorization converter, the thermodynamic analysis of the sulfur recovery mechanism was carried out. The results show that the dephosphorization converter has the obvious trend of desulphurization, and the low sulfur tapping can be realized by reducing the sulfur content in the molten iron and the control materials. Industrial production practice shows that under the condition of deep desulphurization and slagging of KR, by using low-sulfur scrap and canceling the addition of cold-solid pellets and coal gangue, the end point w (S) of dephosphorization converter can be controlled at 0.003% or less.