转炉“生铁块渣补”应用实践

APPLICATION OF“FETTLING WITH SLAG PLUS PIG IRON”TECHNIQUE IN CONVERTER

在转炉生产中,提高炉衬的使用寿命对提高生产率、炉龄、钢产量、钢水质量及降低耐火材料消耗、增加经济效益有重要意义。分析了影响转炉炉衬寿命的主要因素,利用生铁块渣补技术解决了兑铁水、加废钢对炉衬的冲刷及机械磨损,减少了炉料的使用量和停炉的补炉时间,解决了生产与护炉之间的矛盾。该技术的应用,使转炉炉况明显好转、炉龄由11 000炉提高到15 000炉,耐材消耗降低30%,为炼钢进一步提升产能和经济技术指标开辟了一条新路。

In converter production, prolonging the work life of furnace lining is of important significance to increase productivity, steel output, prolong the furnace life, improve molten steel quality, reduce consump tion of refractory materials and increase economic profit. The main factors to affect the lining life are ana lyzed. The technique of fettling with pig iron plus slag is introduced. This method solves the problem of scour and mechanical wear of lining caused by adding hot metal or scrap, reduces charge amount and fettling time, solves the contradiction between production and furnace protection. With the technique the converter condition gets obviously well and well, the furnace life increases from 11 000 to 15 000 heats, the consump tion of refractory materials reduces by 30%.