| CaO-SiO2-FeOx-MgO氧化物体系液相区及相关系计算 |
| |
| 引用本文： | 杨治明,陈敏,王楠.CaO-SiO2-FeOx-MgO氧化物体系液相区及相关系计算[J].材料与冶金学报,2012,11(2):93-97. |
| |
| 作者姓名： | 杨治明 陈敏 王楠 |
| |
| 作者单位： | 1. 重庆科技学院教务处,重庆,401331
2. 东北大学材料与冶金学院,沈阳,110819 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 焚烧垃圾底灰的主要氧化物组分为SiO2、CaO、Al2O3、Fe2O3、Na2O和MgO,该六元体系相关系和热力学性质对于焚烧底灰渣化处理中玻璃相形成以及重金属低浸出具有重要影响.本文运用计算热力学理论及相图计算方法,对CaO-SiO2-FeOx-MgO四元氧化物体系的热力学性质进行了研究,获得了描述该四元系液相吉布斯自由能的模型参数,并依此计算了不同温度及氧分压下SiO2-FeOx-MgO、CaO-SiO2-FeOx和CaO-SiO2-FeOx-MgO体系液相区和高铁区域的相关系.计算结果表明温度及氧分压对上述3个氧化物体系的液相区及高FeOx区域的相平衡关系具有较大影响
|
| 关 键 词： | 底灰 渣化处理 CaO-SiO2-FeOx-MgO系 相关系 相图计算 |
Calculation on the liquid zone and phase relations of CaO-SiO2-FeOx-MgO oxide system |
| |
| YANG Zhi-ming
,
CHEN Min
,
WANG Nan.Calculation on the liquid zone and phase relations of CaO-SiO2-FeOx-MgO oxide system[J].Journal of Materials and Metallurgy,2012,11(2):93-97. |
| |
| Authors: | YANG Zhi-ming CHEN Min WANG Nan |
| |
| Affiliation: | 1.Office of Educational Administration,Chongqing University of Science and Technology,Chongqing 401331; 2.School of Materials and Metallurgy,Northeastern University,Shenyang 110819,China) |
| |
| Abstract: | The main oxide components of bottom ash are CaO,Al2O3,SiO2,Fe2O3,MgO,and Na2O,and the thermodynamic properties of CaO-Al2O3-SiO2-FeOx-MgO-Na2O six-component oxide system is of great scientific significance for formation of glass phase and low leaching of heavy metal.A study on the thermodynamic properties of the CaO-SiO2-MgO-FeOx system was done by using CALPHAD method in this work.The modeling parameters to calculate the thermodynamic properties of the liquid phases in CaO-SiO2-MgO-FeOx system were established,and the equilibrium phase relations and liquid zone of SiO2-FeOx-MgO and CaO-SiO2-FeOx-MgO systems were calculated at different temperatures and oxygen partial pressures.The results showed that the effects of temperature and oxygen partial pressure on the liquid zone and phase relation in the high FeOx field are remarkable. |
| |
| Keywords: | Bottom ash vitrification CaO-SiO2-FeOx-MgO system phase relation CALPHAD |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
