Thermodynamic Properties of the MgO-BO1.5-SiO2 System at 1723 K

In order to economically extract boron from a boric oxide bearing iron ore by blast furnace process, thermodynamic properties of the MgO-BO1.5-SiO2 system have been investigated. Phase diagram and the activities of the constituent oxides of the MgO-BO1.5-SiO2 ternary system were determined at 1723 K...

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Bibliographic Details
Published in:ISIJ International 1996/11/15, Vol.36(11), pp.1360-1365
Main Authors: Huang, Xianming, Asano, Kyoshi, Fujisawa, Toshiharu, Sui, Zhitong, Yamauchi, Chikabumi
Format: Article
Language:English
Subjects:
activity
Fe-B-Si-C alloy
MgO-BO1.5-SiO2 system
phase diagram
thermodynamics
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Summary:In order to economically extract boron from a boric oxide bearing iron ore by blast furnace process, thermodynamic properties of the MgO-BO1.5-SiO2 system have been investigated. Phase diagram and the activities of the constituent oxides of the MgO-BO1.5-SiO2 ternary system were determined at 1723 K by chemical equilibrium method. Thermodynamic calculations for the equilibrium between MgO-BO1.5-SiO2 slag and carbon saturated Fe-B-Si-C alloy were performed and the suitable blast furnace slag composition for the recovery of boron was discussed.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.36.1360