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用严格正规阴离子亚晶格代替Whiteway-Smith-Masson(WSM)模型中理想阴离子亚晶格的假定,推导了二元硅酸盐熔体的四参数分支链聚合模型。对于大多数熔渣,该模型中三个交换能参数W_(01),W_(12)和C(C=W_(02)-W_(01))可假定都等于零;于是简化得一参数模型,即WSM分支链聚合模型,对于CaO-SiO_2熔渣,上述三个交换能参数可假定为相等但不为零,于是得两参数模型,取交换能参数W_(12)/RT=-0.023,热力学平衡常数Ko~(11)~0=0.0044,所得两参数模型能较好地解释1600℃时0.412≤N_(SiO_2)≤0.450范围内CaO-SiO_2熔渣的活度数据。
A four-parameter branch-chain polymerization model of binary silicate melt was derived using the assumption that the strictly regular anion sub-lattice replaces the ideal anion sub-lattice in the Whiteway-Smith-Masson (WSM) model. For most slag, the three exchange energy parameters W_ (01), W_ (12) and C (C = W_ (02) -W_ (01)) in this model can all be assumed to be equal to zero. That is, the WSM branch chain aggregation model. For the CaO-SiO 2 slag, the above three exchange energy parameters can be assumed to be equal but not zero, thus obtaining a two-parameter model, taking the exchange energy parameter W 12 /RT=-0.023, The equilibrium constants Ko ~ (11) ~ 0 = 0.0044, the obtained two-parameter model can well explain the activity data of CaO-SiO_2 slag in the range of 0.412≤N_ (SiO_2) ≤0.450 at 1600 ℃.