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针对增加钒钛磁铁矿使用比例渣中TiO_2质量分数提高后,对二元碱度以及MgO、TiO_2和Al_2O_3质量分数等对高钛型高炉渣熔化性温度的影响进行了分析。结果表明,在二元碱度为0.9~1.3、MgO质量分数为7.00%~13.00%、TiO_2质量分数为21.00%~25.00%、Al_2O_3质量分数为13.00%~16.00%、其他组元不变的条件下,随着二元碱度、MgO质量分数升高,熔化性温度升高;随着TiO_2质量分数升高,熔化性温度先升高后降低;随着Al_2O_3质量分数升高,炉渣熔化性温度降低。二元碱度可以在较大范围内变化,对炉渣熔化性温度的调控作用最明显;MgO、TiO_2和Al_2O_3的质量分数只能在较小的范围内变化,对炉渣熔化性影响不显著。在渣中TiO_2质量分数为21.00%~25.00%的条件下,炉渣二元碱度不宜超过1.15,三元碱度不宜超过1.60,否则炉渣熔化性温度将显著升高。
In order to increase the mass fraction of TiO_2 in the slag with increasing proportion of vanadium-titanium magnetite, the influence of binary alkalinity and the mass fraction of MgO, TiO_2 and Al_2O_3 on the fusing temperature of high-titanium blast furnace slag was analyzed. The results show that under the conditions of binary basicity of 0.9-1.3, MgO mass fraction of 7.00% -13.00%, TiO 2 mass fraction of 21.00% -25.00% and Al 2 O 3 mass fraction of 13.00% -16.00%, the other constants , With the increase of the mass fraction of MgO and the increase of the melting temperature, the melting temperature increases first and then decreases with the increase of the mass fraction of TiO 2. With the increase of the mass fraction of Al 2 O 3, the melting temperature reduce. Binary Alkalinity can be changed in a wide range, which has the most obvious influence on the melting temperature of slag. The mass fraction of MgO, TiO 2 and Al 2 O 3 can only change within a small range, and has no significant effect on the slag melting. When the mass fraction of TiO_2 in the slag is 21.00% -25.00%, the binary basicity of the slag should not exceed 1.15, and the basicity of the ternary solution should not exceed 1.60, otherwise the melting temperature of the slag will be significantly increased.