Abstract：In order to explore the control of titanium content in blast furnace with titanium ore, combined with titanium silicon ratio (w([Ti])/w([Si])), the influencing factors of actual titanium distribution ratio were summarized. Based the slag activity and hot metal element activity, the components of slag in equilibrium of TiO2 reduced by [C] and [Si] were calculated, respectively. The changes of titanium silicon ratio with the temperature of molten iron, binary basicity of slag, silicon content of molten iron and sulfur content of molten iron were discussed respectively. The results show that titanium silicon ratio(TiO2 reduced by [Si] in iron) < actual titanium silicon ratio < titanium silicon ratio(TiO2 reduced by [C] in iron). Titanium silicon ratio (TiO2 reduced by [Si] in iron) is basically unaffected by various parameters. However, titanium silicon ratio(TiO2 reduced by [C] in iron) is greatly affected by the temperature of molten iron and w([Si]) in molten iron, resulting in the divergence of titanium content in molten iron at high temperature. Therefore, during the furnace protection period, it is necessary to focus on the molten iron temperature and titanium silicon ratio.
贾国利, 马洪修, 程洪全, 贾新. 高炉加钛护炉时铁水钛硅比的控制[J]. 中国冶金, 2023, 33(1): 90-97.
JIA Guo-li, MA Hong-xiu, CHENG Hong-quan, JIA Xin. Control of titanium silicon ratio in molten iron of blast furnace with titanium ore[J]. China Metallurgy, 2023, 33(1): 90-97.
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2023, Vol. 33 
