Wang Dongsheng. Thermodynamics Analysis for Carbon Thermal Reduction of Titanium-containing Slag[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(6): 85-90. doi: 10.7513/j.issn.1004-7638.2017.06.016
Citation:
Wang Dongsheng. Thermodynamics Analysis for Carbon Thermal Reduction of Titanium-containing Slag[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(6): 85-90. doi: 10.7513/j.issn.1004-7638.2017.06.016
Wang Dongsheng. Thermodynamics Analysis for Carbon Thermal Reduction of Titanium-containing Slag[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(6): 85-90. doi: 10.7513/j.issn.1004-7638.2017.06.016
Citation:
Wang Dongsheng. Thermodynamics Analysis for Carbon Thermal Reduction of Titanium-containing Slag[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(6): 85-90. doi: 10.7513/j.issn.1004-7638.2017.06.016
Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
In this paper,the thermodynamics of carbon thermal reduction process of titanium-containing slag was analyzed.The results show that during the carbon thermal reduction process of titanium-containing slag,TiO2 is reduced to a series of low-valence titanium oxides.TiO2 begins to transform into Ti3O5 at 1359K then it probably forms Ti2O3 and TiCxOy which are finally reduced to TiC.CaO,MgO and Al2O3 in the slag could not react with carbon,while Fe2O3,V2O5,MnO and SiO2can be reduced by carbon with the preference of Fe2O3>V2O5>MnO>SiO2.TiC formed in the early stage could react with TiO2 to generate low-valence titanium oxides such as Ti3O5.Solid CaTiO3 cannot directly react with carbon but the molten CaTiO3 is reduced to TiC by carbon.The thermodynamic calculations provide important references for understanding transformation of minerals in titanium-containing slag during carbon thermal reduction process.