根据由炉渣完全离子化理論导出的硫分配比公式: (％S)/[％S]=(2.56fs)/(γ_s--)·(∑n_+∑n_-)/(nFeO),在充分引用活度系数的条件下,研究炉渣氧化鉄含量对脫硫的作用。文內采用三种碱度的炉渣进行了計算,結果証明文献內前人对FeO作用四种分歧的評价不是相互矛盾的,而相反地是有內在联系的;它們說明FeO在不同条件下显示不同的作用,而这些不同的作用都可用上列硫分配比公式統一地表示出来。最后,对該公式能否适用于碱性化铁炉及側吹碱性轉炉炉渣,以及对該公式存在的某些缺点和問題进行了討論。 According to the formula of sulfur distribution derived from the theory of complete ionization of slag: (% S) / [% S] = (2.56fs) / (γ_s-) · (Σn_ + Σn_-) / (nFeO) Under the condition of reference activity coefficient, the effect of slag content on desulfurization was studied. The calculation of the three basicities of slag in the paper shows that the four previous disagreements on the role of FeO in the literature are not mutually contradictory and conversely intrinsically linked; they show that FeO is different under different conditions The role of these different roles can be unified with the above formula for the distribution of sulfur. Finally, the formula can be applied to alkaline iron furnace and side-blown alkaline converter slag, and the formula some of the shortcomings and problems are discussed.