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采用FactSage对不同Al_2O_3质量分数下CaO-SiO_2-FeO_x-MgO-Al_2O_3体系液相区进行热力学分析,并通过液相生成特性试验,研究高岭土型Al_2O_3和三水铝型Al_2O_3对CaO-SiO_2-FeO_x-MgO-Al_2O_3体系液相生成特性的影响。结果表明,高岭土型Al_2O_3和三水铝型Al_2O_3对液相生成特征温度的影响无明显差异,Al_2O_3质量分数增加,均使液相开始生成温度升高,液相生成温度区间缩小,高熔点黏结相比例增加。液相生成量与Al_2O_3类型质量分数相关,w(Al_2O_3)=1.0%时,含三水铝型Al_2O_3混合料液相生成量较少;w(Al_2O_3)=2.0%~3.5%时,含高岭土型Al_2O_3混合料液相生成量较少。
The liquid phase of CaO-SiO_2-FeO_x-MgO-Al_2O_3 system with different mass fractions of Al 2 O 3 was investigated by FactSage. The liquid phase characteristics of CaO-SiO_2-FeO_x- Effect of MgO-Al_2O_3 System on Liquid Phase Properties. The results show that there is no significant difference in the characteristic temperature of liquid phase formation between kaolin-type Al 2 O 3 and aluminum trihydrate Al 2 O 3, and the mass fraction of Al 2 O 3 increases with the increase of liquid phase initiation temperature, the decrease of liquid-phase formation temperature range and the high melting point binder phase Increase in proportion. The mass fraction of liquid phase is related to the mass fraction of Al 2 O 3. When w (Al_2O_3) = 1.0%, the liquid phase formation of Al_2O_3 mixture containing trihydrate is less. When the content of Al_2O_3 is 2.0% ~ 3.5% Al 2 O 3 mixture produced less liquid phase.