降低转炉总包耐火材料消耗实践  

Practice of Reducing Refractory Material Consumption in BOF

作　　者：谭喜阳 王海华[2] 全勇 崔辉[2] 张嘉严 雷中兴 TAN Xiyang;WANG Haihua;QUAN Yong;CUI Hui;ZHANG Jiayan;LEI Zhongxing(Wugang Refractory Co.,Ltd.,Wuhan 430080,China;Wuhan Iron and Steel Co.,Ltd.,Wuhan 430080,China)

机构地区：[1]武汉钢铁集团耐火材料有限责任公司,湖北武汉430080 [2]武汉钢铁有限公司,湖北武汉430080

出　　处：《山东冶金》2024年第2期58-60,共3页Shandong Metallurgy

摘　　要：针对国内某钢厂210 t转炉吨钢耐材消耗偏高的现状,从炉底炉型优化、合理的耐材匹配及转炉终渣控制等方面进行优化实践。结果表明:对于该钢厂平底型转炉炉壳,炉底工作层设计为平底型炉型能减缓炉底中心的侵蚀速率;通过对炉底工作层自800 mm加厚至1000 mm,并改变炉型,全炉役炉底平均侵蚀速率降低19%;对于低碳钢冶炼的转炉,适当减少炉底及后大面镁碳砖碳含量,可减缓炉底及后大面侵蚀;适当调整转炉终渣碱度及MgO含量,提高全炉役溅渣比例可有效减少转炉维护。采取一系列措施后,转炉维护总消耗下降0.13 kg/t钢。Reducing the refractory consumption per ton liquid steel in the converter is key indicator of advanced smelting technologies.This article elaborates on the current situation of high refractory consumption per ton liquid steel in the 210 ton converter of a domestic steel plant.Optimization practices and applications are conducted from aspects such as optimization of the bottom profile,reasonable refractory matching,and control of the converter slag.It is shown that for the flat-bottomed converter shell of this steel plant,designing the refractory working layer as a flat for the flat-bottomed converter shell of this plant can slow down the erosion rate of the bottom center.Furthermore,increasing the thickness of the refractory working layer from 800 mm to 1000 mm and altering the bottom profile can prolonged the full campaign life of the converter.The average erosion rate of the bottom in full campaign has been decreased by 22.7%o.For converter smelting of low-carbon steel,reducing the carbon content of magnesia carbon bricks at the bottom and tap-pad can slow down the erosion.Properly adjusting the basicity and MgO content of the final slag of the converter and increasing the proportion of slag splashing in the entire furnace can effectively reduce converter maintenance.After adopting a series of measures such as optimizing the bottom furnace type,reasonable matching of refractory materials,and controlling the final slag of the converter,the total maintenance consumption of the converter has been decreased by 0.13 kg/ton of steel.

关 键 词：转炉 镁碳砖 维护材料 消耗 

分 类 号：TF748.2[冶金工程—钢铁冶金]