转炉高冷料比冶炼的控制实践  

Control practices of converter production with high cold charge ratio

作　　者：黄标彩 方宇荣 张桂林 

机构地区：[1]福建三钢闽光股份公司炼钢厂,福建三明365000

出　　处：《炼钢》2011年第2期6-9,共4页Steelmaking

摘　　要：福建三钢闽光股份公司针对转炉高冷料比冶炼时,终点成分和温度波动大、命中率低等问题,集成开发了高冷料比单炉双联技术、Quik-tap自动炼钢技术、控渣出钢技术和电石辅助脱氧技术4项关键技术。与常规冶炼工艺相比,转炉高冷料比冶炼时,出钢磷质量分数降低0.0112%,终点碳、温双命中率达90.82%,补吹率从28.37%降低到6.76%,总渣料消耗降至55 kg/t以下,转炉出钢下渣量控制在27 mm左右。In light of the problem such as temperature and composition fluctuation, low hitting rate at the end point of converter production with high cold charge ratio ,a technology has been integrated and developed in Sansteel MinGuang Co. , Fujian. It consists of four key techniques namely, 1） double-combining process in single converter with high cold charge radio, 2） Quick-tap automation steelmaking, 3） tapping with slag controlling and 4） deoxidization with CaC2. Compared to the conventional steelmaking process, phosphorus mass fraction at tapping is lowered by 0.0112 %, about over 50 %,C-T double hit-rate is 90. 82 % and re-blow rate is decreased from 28. 37 % to 6. 76 % and sub-material consumption for converters is decreased to 55 kg/t. Slag layer thickness in ladles after tap is controlled within the limit of about 27 mm.

关 键 词：转炉 高冷料比 集成生产技术 洁净度 

分 类 号：TF703[冶金工程—钢铁冶金]