硅钢RH处理过程碳和硫行为分析

Analysis on behavior of carbon and sulfur of silicon steel in RH process

分析了太原钢铁(集团)有限公司第二炼钢厂80 t RH生产冷轧硅钢脱碳、脱硫原理及影响因素,认为通过合理控制RH到站钢水碳和氧含量、加大插入管内径、采用快速抽真空度等可提高脱碳效果。降低顶渣中FeO和MnO含量,保证脱硫剂加入后的循环时间可以提高RH脱硫率。

The present article analyzes the principle of decarburization and desulfurization in refining the cold rolled silicon steelin the 80 t RH in No.2 Steelmaking Plant of Taiyuan Iron ＆ Steel （Group） Corp., and its influencing factors. It＇s determined that the decarburization effect can be achieved by properly controlling the cabon and oxygen contents in the hot metal coming into the RH station, enlarging the inner diameter of snorkel and adopting the fast evacuation method. In the meanwhile the desulfurization rate in RH can be raised by reducing FeO and MnO contents in the top slag and ensuring the circulation time after charging the desulfuizer.