复吹转炉脱磷预处理工业试验  

Industrial experimental on dephosphorization pretreatment in combined-blowing converter

作　　者：闫占辉[1,2] 邢相栋[1] 张建良[1] 赵长亮[2] 裴培[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]首钢京唐钢铁联合有限责任公司,河北唐山063210

出　　处：《炼钢》2014年第2期30-34,共5页Steelmaking

摘　　要：通过对首钢京唐钢铁联合有限责任公司300t转炉脱磷现场工业试验，研究了复吹转炉脱磷预处理过程中半钢温度、炉渣氧化性、脱磷渣碱度、半钢w（C）／w（P）对脱磷效果的影响，研究表明：在半钢温度和脱磷渣碱度分别控制在1 290～1 310℃和1．9～2．5的条件下，半钢终点平均w（P）=0．026％，且w（P）〈O．030％的比例能够达到81．01％，与优化前相比，半钢平均磷含量和磷合格率都有明显改善。Through field test on dephosphorization in 300 t combined-blowing converter of Shougang Jingtang Iron ＆ S, eel United Co. Ltd. , the effects of semi-steel tempera- ture, slag oxidation, dephosphorization slag basicity as well as semi steel w（C）/w（P） on dephosphorization rate and phosphorus partition were studied. The results showed that the finished mass fraction of phosphorus in semi-steel could be controlled less than 0. 030 % under the condition of semi-steel temperature and slag basicity controlled with- in 1 290-1 310 ℃ and 1.9-2. 5 respectively, which could make the average mass fraction of phosphorus reach to 0. 026 % in semi-steel, and the rate of w（P）〈0. 030 % reach 81.01%. The average phosphorus content and dephosphorization rate were improved obviously.

关 键 词：复吹转炉 氧化性 脱磷率 磷分配比 预处理 

分 类 号：TF704.4[冶金工程—钢铁冶金]