烟气分析在100t转炉深脱磷工艺的应用  

Application of Off-Gas Analysis for Deep-Dephosphorization Process of 100 t BOF

作　　者：秦登平[1] 杨建平[1] 危尚好[1] 吕延春[2] 李永生[1] 

机构地区：[1]首秦金属材料有限公司,秦皇岛066326 [2]首钢技术研究院,北京100043

出　　处：《特殊钢》2013年第3期39-41,共3页Special Steel

摘　　要：基于对脱磷工艺的理论分析,通过100 t转炉烟气分析控制熔炼过程、终点温度、过程化渣控制和预测终点磷含量以获得低磷钢水。首秦金属材料公司100 t顶底复吹转炉所用铁水的硅含量为0.2%～0.8%,磷含量0.052%～0.090%,管线钢的生产结果表明,烟气分析终点温度(1 580～1 650℃)命中率能达到95%以上;模型预测磷含量与转炉终点实际磷含量分别为0.007 6%和0.0074%,通过烟气分析实现了转炉终点磷含量≤0.010%的目标。Based on theoretical analysis on dephosphorization in steelmaking process, the off-gas analysis is used to contr61 steel melting process and end-point temperature of molten steel, control slag melting process, forecast end-point phosphorus content in steel and get low phosphorus molten steel. For 100 t top and bottom combined blown converter at Shouqin Metal Materials Co Ltd, the silicon content in hot metal is 0. 2% - 0. 8% and the phosphorus content is 0. 052% - 0. 090%, the pipeline steel production results show that by off-gas analysis the percentage of hits for end-point temperature of molten-steel （1 580 - 1 650 ℃ ） is more than 95%, and thee forecasting byimodel and the measuring BOF end-point phosphorus content are respectively 0. 007 6% and 0.007 4%. The aim of BOF end-point phosphorus content ≤0. 010% is realized by off-gas analysis.

关 键 词：100T转炉 炼钢 烟气分析 终点控制 低磷钢 

分 类 号：TF704.4[冶金工程—钢铁冶金]