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针对硬线钢，研究了ＣａＯ－Ａl２Ｏ３—ＳｉＯ２三元渣系的脱氧热力学；根据渣一金平衡，计算了１８２３Ｋ下脱氧平衡时的［Ａl］，［Ｏ］；ＭｎＯ以及Ｆｅｔ的等浓度线．
For hard wire, the deoxidation thermodynamics of CaO-Al2O3-SiO2 ternary slag system was studied. According to the slag-gold balance, the isoconcentration curves of [Al], [O]; MnO and Fet at 1823K were calculated.