Acting mechanism of F, K, and Na in the solid phase sintering reaction of the Baiyunebo iron ore

作者：Hao, Zhi-zhong; Wu, Sheng-li; Wang, Yi-ci^*; Luo, Guo-ping; Wu, Hu-lin; Duan, Xiang-guang

来源：International Journal of Minerals Metallurgy and Materials, 2010, 17(2): 137-142.

DOI：10.1007/s12613-010-0203-1

• iron ore
• solid phase sintering
• alkaline elements
• reaction temperature
• reaction product
• mechanism

The effect of F, K, and Na on the solid phase reaction of the Baiyunebo iron ore was investigated by differential thermal analysis (DTA) and X-ray diffraction (XRD). It has been identified that alkaline elements K and Na in the Baiyunebo ore instigate the formation of low melting point compounds Na2SiO3 and Na2O center dot Fe2O3 and the generation of molten state in the solid phase sintering. Element F in the Baiyunebo ore facilitates the formation of cuspidine compound 3CaO center dot 2SiO(2)center dot CaF2 in the solid phase reaction. The cuspidine compound is kept in solid as one of the final products through the entire sintering process due to its high melting point. In the sintering process, CaF2 and SiO2 react with CaO first and form 3CaO center dot 2SiO(2)center dot CaF2 and 3CaO center dot 2SiO(2), so the formation of ferrites, Na2O center dot Fe2O3, and 2CaO center dot Fe2O3 is inhibited.

• 出版日期2010
• 单位北京科技大学; 内蒙古科技大学