（1. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization， Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China 2. Xichang Steel and Vanadium Co., Ltd., Pangang Group, Xichang 615000, Sichuan, China）
Abstract：The effect of the binary basicity and mass fractions of MgO, TiO2 and Al2O3 on the smelting temperature of high- taitaium- type blast furnace slag were analyzed after the mass fractions of TiO2 increased by the increase of the use ratio of vanadium- bearing titanomagnetite. The results showed that on the conditions that binary basicities were 0.9- 1.3, the mass fractions of MgO were 7.00%- 13.00%, the mass fractions of TiO2 were 21.00%- 25.00%, the mass fractions of Al2O3 were 13.00%- 16.00%, and other compositions were invariable, the smelting temperatures of high- titanium- type blast furnace slag increased gradually with the increase of the binary basicity and mass fraction of MgO, increased firstly and then decreased with the increase of the mass fraction of TiO2, decreased slightly with the increase of the mass fraction of Al2O3. Because the binary basicity could change in a ride range, it′s could adjust the smelting temperature of blast furnace slag prominently. It was hard to change the mass fractions of MgO, TiO2 and Al2O3, so the adjusting effect of MgO, TiO2 and Al2O3 on the smelting temperature was not significantly. When the mass fraction of TiO2 was 21.00%- 25.00%, the binary basicity of slag should not be more than 1.15 and the ternary basicity of slag should not be more than 1.60, otherwise the melting temperature of slag would rise significantly.
2017, Vol. 27 
