转炉出钢碳粉预脱氧工艺实践  

PRACTICE OF PRE-DEOXIDATION OF CARBON POWDER FOR CONVERTER TAPPING

作　　者：孙仕良 徐子娟 张龙 崔登云 Sun Shiliang;Xu Zijuan;Zhang Long;Cui Dengyun(Technical Department of Tangshan Ruifeng Iron and steel Co.,Ltd.,Tangshan,Hebei,063303)

机构地区：[1]唐山瑞丰钢铁有限公司技术部

出　　处：《河北冶金》2019年第6期44-46,共3页Hebei Metallurgy

摘　　要：为降低低碳铝镇静钢中的氧含量,通过对转炉C-O反应机理进行研究,采取在转炉出钢前期用碳粉替代部分铝粒进行钢水预脱氧的操作。实践表明:转炉出钢使用碳粉预脱氧工艺后,脱氧效果与正常脱氧工艺基本相同,但铝粒消耗降低约25kg/炉钢,年创效约665万元;不会对钢水增碳造成较大的影响;水口结瘤炉次明显减少,浸入式水口的使用寿命也由4h延长到4.5h。此工艺的实施,不仅降本增效,还提高了连铸可浇性,改善了钢材质量。In order to reduce the oxygen content in low carbon Al killed steel, the mechanism of C-O reaction in converter was studied, and the carbon powder was used to replace partial aluminium particles to carry molten steel pre-deoxidation in the early stage of tapping. Practice shows that after applying carbon powder pre-deoxidization process in converter tapping, the deoxidization effect is basically the same as that of normal deoxidization process, but the aluminium particles consumption decreases by about 25 kg in a heat, createing 6.65 million RMB benefit per year;it will not have a great impact on molten steel carbonization;the number of nozzle blocking decreases significantly, and the service life of submerged nozzle is extended from 4 h to 4.5 h. The implementation of new process reduces cost, increases efficiency, and improves castability and steel quality.

关 键 词：铝镇静钢 预脱氧 碳粉 铝消耗 增碳 水口结瘤 

分 类 号：TF713[冶金工程—钢铁冶金]