东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2013, Vol. 34 ›› Issue (12): 1743-1746.DOI: 10.12068/j.issn.1005-3026.2013.12.017

• 材料与冶金 • 上一篇    下一篇

CaO-Al2O3和CaO-SiO2-Al2O3渣系中组元活度的计算

吕宁宁1，于景坤1，苏畅1，王洪章2   

  1. (1东北大学材料与冶金学院，辽宁沈阳110819；2沈阳东大冶金科技股份有限公司，辽宁沈阳110819)
  • 发布日期:2013-07-09
  • 通讯作者: 吕宁宁
  • 作者简介:吕宁宁(1985-)，男，山东莱芜人，东北大学博士研究生；于景坤(1960-)，男，辽宁康平人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51274059).

Activity Calculation for the Components in CaOAl2O3 and CaOSiO2Al2O3 Slags〓

LYU Ningning1， YU Jingkun1， SU Chang1， WANG Hongzhang2   

  1. 1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China; 2. Northeastern University Metallurgical Technology Institute Company Limited， Shenyang 110819， China.
  • Published:2013-07-09
  • Contact: YU Jingkun
  • About author:-
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摘要： 根据分子和离子共存理论，建立了CaO-Al2O3和CaO-SiO2-Al2O3渣系的活度计算模型，并利用模型对渣中各组元的活度进行了计算，分析了w(CaO)对渣中组元活度的影响.结果表明，在CaO-Al2O3渣系中，当w(CaO)小于45%时，随着w(CaO)的增加，3CaO·Al2O3和12CaO·7Al2O3的活度不断升高，而CaO·Al2O3的活度变化不大；当w(CaO)大于45%时，随着w(CaO)的增加，CaO·Al2O3和12CaO·7Al2O3的活度不断降低，而3CaO·Al2O3的活度则略有升高.在CaO-SiO2-Al2O3渣系中，12CaO·7Al2O3的活度低于其在CaO-Al2O3渣系中的活度，随着w(CaO)的增加，CaO和3CaO·Al2O3的活度不断升高，2CaO·SiO2的活度则不断降低，CaO·Al2O3的活度呈现先升高后降低的趋势.

关键词: 炉渣, 活度, 共存理论, 七铝十二钙, 铝酸三钙, 硅酸二钙

Abstract: Calculation model for activities of the components in CaOAl2O3 and CaOSiO2Al2O3 slags was established according to the molecule and ion coexistence theory. The activities of the components in CaOAl2O3 and CaOSiO2Al2O3 slags were calculated， and the influence of w(CaO) on the activities of the components was discussed. The results show that when the w(CaO)in CaOAl2O3 slag is less than 45%， with increasing the w(CaO)， the activities of 3CaO·Al2O3 and 12CaO·7Al2O3 in slag increase， however， the activity of CaO·Al2O3 changes little. When the w(CaO)in CaOAl2O3 slag is more than 45%， with increasing the w(CaO)， the activities of CaO·Al2O3 and 12CaO·7Al2O3 in slag decrease， however， the activity of 3CaO·Al2O3 increases slightly. In the CaOSiO2Al2O3 slag， the activity of 12CaO·7Al2O3 is lower than that in the CaOAl2O3 slag， with increasing the w(CaO)， the activities of CaO and 3CaO·Al2O3 increase， and the activity of 2CaO·SiO2 decreases， however， the activity of CaO·Al2O3 increases at first and then decreases.

Key words: slag, activity, coexistence theory, 12CaO·7Al2O3, 3CaO·Al2O3, 2CaO·SiO2

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