提高转炉出钢口使用效果的生产实践  

Practice of improving the using effect of converter tapping hole

作　　者：吴明[1] 

机构地区：[1]马鞍山钢铁股份有限公司第一钢轧总厂,安徽马鞍山243000

出　　处：《炼钢》2016年第1期20-22,共3页Steelmaking

摘　　要：针对马鞍山钢铁股份有限公司120 t转炉出钢口套砖使用寿命低,前期流钢时间长、温降大,后期易散流、二次氧化严重,挡渣效果差、回磷严重等问题,在出钢口套砖更换、使用、维护过程中,采用新材料、新技术和新工艺,实现了出钢口套砖使用寿命延长,最佳流钢时间4 min^5 min 50 s占73.6%,温降减少12℃,下渣回磷事故由每月7起降低至3起以下。In order to solve the problems of 120 t converter tapping hole sleeve brick such as low service life, long tapping time and large temperature drop in the early stage, serious diffuser and secondary oxidation in the later period, poor slag-damming effect and serious rephosphorization in Maanshan Iron ＆ Steel Co., Ltd., new material, new technology and new process had been adopted in the replacement, operation and maintenance of tapping hole brick. The results indicated that the service life of tapping hole brick was extended, the ratio of the optimist tapping time between 5 min 50 s and 4 min was 73.6 %, the temperature dropped reduced by 12 ＂C, times of slag rephosphorization accident dropped from seven times to under three times per month.

关 键 词：出钢口 套砖 使用技术 效果 

分 类 号：TF713.7[冶金工程—钢铁冶金]