Thermodynamic analysis of the carbothermic reduction of a high-phosphorus oolitic iron ore by FactSage
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- 作者：Wen Yu ; Qiong-yao Tang ; Jiang-an Chen…
- 关键词：thermodynamic analysis ; oolitic iron ore ; carbothermal reduction
- 刊名：International Journal of Minerals, Metallurgy, and Materials
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：23
- 期：10
- 页码：1126-1132
- 全文大小：1,205 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Materials Science
Metallic Materials
Mineral Resources - 出版者：Journal Publishing Center of University of Science and Technology Beijing, in co-publication with Sp
- ISSN：1869-103X
- 卷排序：23
文摘
A thermodynamic analysis of the carbothermic reduction of high-phosphorus oolitic iron ore (HPOIO) was conducted by the FactSage thermochemical software. The effects of temperature, C/O ratio, additive types, and dosages both on the reduction of fluorapatite and the formation of liquid slag were studied. The results show that the minimum thermodynamic reduction temperature of fluorapatite by carbon decreases to about 850°C, which is mainly ascribed to the presence of SiO2, Al2O3, and Fe. The reduction rate of fluorapatite increases and the amount of liquid slag decreases with the rise of C/O ratio. The reduction of fluorapatite is hindered by the addition of CaO and Na2CO3, thereby allowing the selective reduction of iron oxides upon controlled C/O ratio. The thermodynamic results obtain in the present work are in good agreement with the experimental results available in the literatures.