宝钢2号高炉降低终渣(MgO)含量研究  

Study on Lowering MgO Content in Slag from Baosteel No.2 BF

作　　者：康健 徐万仁[1] 居勤章[1] KANG Jian;XU Wanren;JU Qinzhang(Baoshan Iron and Steel Co.,Ltd.)

机构地区：[1]宝山钢铁股份有限公司

出　　处：《炼铁》2022年第1期18-22,共5页Ironmaking

摘　　要：为探索降低高炉终渣(MgO)含量的可行性,同时摸索相应的造渣制度,在宝钢2号高炉进行了降低终渣(MgO)含量的工业试验。结果表明:①大型高炉终渣熔化温度>1380℃、黏度(1500℃)>0.4Pa·s时,高炉终渣流动性显著变差,高炉下部压差上升,炉缸透液性恶化,出渣铁作业不畅;②4000 m^(3)高炉终渣(Al_(2)O_(3))控制在15.0%~16.0%时,终渣(MgO)应控制在5.5%以上,镁铝比控制在0.36以上;③随着炉渣(Al_(2)O_(3))含量增加,应提高(MgO)含量,控制镁铝比在0.42以上。To study the feasibility of reducing the(MgO)content in BF slag before tapping and explore the corresponding slagging system,a commercial test has been carried in Baosteel No.2 BF,and the results reveal that:(1)When BF slag is>1380℃ in temperature and>0.4Pa·s in viscosity(1500℃),its fluidity becomes worse greatly,the differential pressure at the BF lower part rises and the liquid permeability of the hearth develops adversely,resulting in unsmooth tapping operation;(2)If(Al_(2)O_(3))content in slag of 4000m^(3)BF is 15.0%-16.0%,the(MgO)content in the BF slag shall be higher than 5.5%,and the magnesium to aluminum ratio shall be above 0.36;(3)The(MgO)content shall increase as(Al_(2)O_(3))content increases,and the ratio of magnesium to aluminum shall be controlled above 0.42.

关 键 词：大型高炉 终渣(MgO) 熔化温度 黏度 镁铝比 

分 类 号：TF54[冶金工程—钢铁冶金]