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.
出处
《炼钢》
CAS
北大核心
2014年第2期30-34,共5页
Steelmaking
关键词
复吹转炉
氧化性
脱磷率
磷分配比
预处理
combined-blowing converter
oxidizability
dephosphorization rate
phosphor-us partition
pretreatment
