钛矿护炉对高炉的影响探析

Analysis of Effect of Titanium Ore Protection on BF

结合宝钢2号高炉钛矿护炉实践,重点阐述了钛矿护炉对高炉的影响。根据热力学计算和试验分析,钛矿护炉时须控制铁水[Ti]在0.1%以上,才能保证碳氮化钛等钛化物的析出。宝钢2号高炉钛矿护炉实践表明:长期使用钛矿护炉,会造成渣铁流动性变差、透气性变差和燃料消耗上升。因此,应尽量避免使用钛矿护炉;在侧壁温度异常升高常规手段又无法控制时,可使用钛矿护炉,但侧壁温度下降并稳定在可控范围时,应立即停止使用钛矿。

It is described the effect of titanium ore protection on BF on the basis of the furnace protection practice in Baost- eel＇s No. 2 BF. Thermodynamic calculation and experimental analysis demonstrate that the titanium compounds, such as ti- tanium carbonitride, can be precipitated only when [ Ti ] content in hot metal is kept above 0.1% during titanium ore protec- tion operation. However such protection practice in Baosteel＇s No. 2 BF also shows that long time usage of titanium ore for furnace protection will result in poor fluidity of hot metal and slag, poor permeability and higher fuel consumption, therefore, application of titanium ore for furnace protection should be implemented only if abnormal temperature rise of furnace side wall cannot be controlled in a conventional way, and stopped as the temperature of the furnace sidewall becomes normal and stabi- lized within a controllable range.