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运用Factsage软件模拟了MgO含量对CaO-SiO2-Al2O3-MgO熔渣中液相区的影响.结果表明,随着CaO-SiO2-Al2O3-MgO渣中MgO含量增加,渣中低熔点液相区整体向低CaO高SiO2区移动.相图中1500℃液相区比例由0%MgO(质量分数)时的25.05%上升至9%MgO(质量分数)时的52.69%,而后降至15%MgO时的46.70%.相图中1400℃液相区比例由3%MgO时的14.41%上升至11%MgO时的34.39%,而后降至15%MgO时的31.04%.相图中1300℃液相区比例由5%MgO时的5.57%上升至14%MgO时的11.02%,而后降至15%MgO时的10.50%.相图中1200℃液相区域比例在MgO为0~6%时为零,由7%MgO时的0.88%上升至11%MgO时的1.22%,在MgO为13%~15%时降为零.模拟结果可对以CaO-SiO2-Al2O3-MgO为基本组元配置炼钢渣系的成分选择提供有效指导.
The effect of MgO content on the liquid region in CaO-SiO2-Al2O3-MgO slag was simulated by Factsage software.The results showed that with the increase of MgO content in CaO-SiO2-Al2O3-MgO slag, To the low CaO high SiO2 region.The proportion of liquid phase in the phase diagram of 1500 ℃ increased from 25.05% at 0% MgO to 52.69% at 9% MgO and then decreased to 15% MgO Of the phase diagram of the phase diagram 1400 ℃ liquid phase area ratio from 14.41% at 3% MgO rose to 34.39% at 11% MgO, and then dropped to 15% when the MgO 31.04% phase diagram 1300 ℃ liquid region The proportion increases from 5.57% at 5% MgO to 11.02% at 14% MgO and then to 10.50% at 15% MgO The phase ratio of the liquid phase at 1200 ° C in the phase diagram is zero when MgO is 0 to 6% From 0.88% at 7% MgO to 1.22% at 11% MgO and to zero at 13% ~ 15% MgO. Simulation results Steelmaking with CaO-SiO2-Al2O3-MgO as a basic component Slag system components to provide effective guidance.