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以化学平衡法在N_(Al_2O_3)≤0.16,N_(MgO)≤0.30,N_(CaO)≤0.30范围内于1600和1650℃测定了CaF_2基电渣熔渣中MgO活度,研究了MgO,Al_2O_3和CaO对MgO活度的影响。绘制了CaF_2-MgO-Al_2O_3系和CaF_2-MgO-CaO-Al_2O_3(N_(Al_2O_3)=0.07)系MgO等活度线的组成图。α_(MgO)随N_(MgO)增加而增大。Al_2O_3于1600℃是强烈降低γ_(MgO)的物质;而在1650℃,当N_(MgO)<0.15时,Al_2O_3却是提高γ_(MgO)的物质;N_(MgO)为0.16附近存在Al_2O_3对α_(MgO)影响不敏感区。
The MgO activity in CaF2-based electroslag slag was measured by chemical equilibrium method at 1600 and 1650 ℃ in the range of N_ (Al_2O_3) ≤0.16, N_ (MgO) ≤0.30 and N_ (CaO) ≤0.30. The effects of MgO, Al_2O_3 And CaO on the activity of MgO. The composition of active lines such as CaF_2-MgO-Al_2O_3 system and CaF_2-MgO-CaO-Al_2O_3 (N_ (Al_2O_3) = 0.07) system is plotted. α_ (MgO) increases with increasing N_ (MgO). Al_2O_3 is a kind of material that strongly reduces γ_ (MgO) at 1600 ° C; Al_2O_3 is a substance that increases γ_ (MgO) at 1650 ° C when N_ (MgO) is less than 0.15; Al_2O_3 is near α__ (MgO) insensitive zone.