马钢300t转炉挡渣工艺的优化与改进  

Optimization and improvement of 300 t converter skimming process in masteel

作　　者：蒋育翔[1] 邓勇[1] 熊磊[1] 

机构地区：[1]马鞍山钢铁股份有限公司第四钢轧总厂,安徽马鞍山243000

出　　处：《炼钢》2014年第1期17-20,共4页Steelmaking

摘　　要：为减少出钢过程下渣、提高钢水质量及合金元素收得率,马鞍山钢铁股份有限公司第四钢轧总厂对300 t转炉原气动挡渣工艺进行了优化,采用了挡渣镖法和气动挡渣法相配合的方法。现挡渣镖法挡渣成功率达到98%,出钢下渣量减少了30%以上,平均回磷质量分数可控制在0.003%以下,同时提高了钢水收得率,改善了溅渣护炉和后续精炼效果,取得了较好的经济效益。To reduce the slag outflow during converter＇s taping, improve the quality of liquid steel, and increase the yield of alloy elements, the original pneumatic slag-stopping process for 300 t converter was optimized by applying the skimming dart combined with the pneumatic slag-stopping technology in No. 4 Steel-Making and Rolling Plant General of Ma＇anshan Iron and Steel Co. , Ltd. Through the skimming dart technology, the successful slag-stopping reached to 98 %, the quantity of slag outflow during taping was reduced by more than 30 %, and the average mass fraction of rephosphorization could be controlled under 0. 003 %. Meanwhile, the yield of liquid steel was increased, the effect of slag-splashing and subsequent refining was improved. As a result, better economic benifits were gained.

关 键 词：转炉 挡渣 回磷 

分 类 号：TF713.7[冶金工程—钢铁冶金]