MnO-TiO2渣系热力学计算模型
THERMODYNAMIC CALCULATING MODEL FOR THE SLAG SYSTEM MnO-TiO2
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摘要: 根据炉渣结构的共存理论以及相图,确定了MnO-TiO2渣系的结构单元为Mn2+,O2-简单离子和TiO2,2MnO·TiO2,MnO·TiO2分子,进而推导了本渣系的热力学计算模型。研究结果表明,在1500℃和1550℃两温度下,计算的NMnO与实测的αMnO完全一致,从而证明了该模型的正确性。本文进一步计算了△HM,△GM随渣系组成的变化规律。
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关键词:
- MnO-TiO2渣系 /
- 共存理论 /
- 作用浓度 /
- 活度
Abstract: In accordance with the coexistence theory of slag structure and phase diagrams, the structural units of MnO-TiO2 slag system have been determined as simple ions Mn2+,O2- and molecules TiO2, 2MnO·TiO2, MnO· TiO2 and the thermodynamic calculating model of mass action concentrations has been deduced.The results show the calculated values NMnOare in agreement with measured αMnO. Therefore the above model is reasonable. Furthermore the changes of △HM△GM with ∑nMnO are also calculated.-
Key words:
- MnO-TiO2 slag system /
- coexistence theory /
- mass action concentrations /
- activity
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