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通过质量损失法对ＣａＯ－ＳｉＯ２－ＣａＦ２三元渣系挥发率与温度、渣组成的关系进行了研究。结果表明：在渣完全熔化之前有一临界温度，其值大小因渣而异，即酸性渣具有低温临界点；碱性渣具有高温临界点；中性渣则两个临界点均存在；当渣的碱度过高（Ｒ≥１．４）或ＣａＦ２含量过少（≤１０％）时，这两个临界点均不存在。临界温度对渣的挥发率有明显影响；在渣完全熔化之后，挥发率将随碱度的降低及ＣａＦ２含量的增加而提高。
The relationship between volatilization rate of CaO-SiO2-CaF2 ternary slag system and temperature and slag composition was studied by mass loss method. The results show that there is a critical temperature before the slag is completely melted, and the value varies with the slag, that is, the acidic slag has a low temperature critical point, the alkaline slag has a high temperature critical point, and the neutral slag has two critical points. Alkalinity is too high (R ≥ 1.4) or CaF2 content is too small (≤ 10%), the two critical points are not present. The critical temperature has a significant effect on the volatilization rate of slag; after the slag is completely melted, the volatilization rate will increase with the decrease of alkalinity and the increase of CaF2 content.