Thermodynamic Analysis for Formation of Ti(C,N) in Blast Furnace and Factors Affecting TiO_2 Activity

摘要

The effect of protecting blast furnace (BF) can be achieved by smelting the iron ores containing titanium. The formation of Ti(C,N) in the slag causes bubbles resulted in the difficult separation of slag and iron. The concentration of titanium in hot metal with slag-iron reaction reaching equilibrium and the solubility of titanium in hot metal are calculated by FactSage software. The results show that the concentration of titanium in hot metal with slag-iron reaction reaching equilibrium is equal to 1.042% and the solubility of titanium in hot metal is 0.5588. The most effective factor of decreasing TiO_2 activity is binary basicity (R_2=CaO/SiO_2), followed by temperature, MgO content, Al_2O_3 content.