Phases Transformation of Boron Mud During Carbothermal Reduction Process
By using the industrial waste boron mud as raw material, graphite as reductant, coke particles as burying materials. During carbothermal reduction process, the Mg-Fe forsterite phase in boron mud row materials can transformed into forsterite and Fe2O3 at 1550℃ and 1600℃ for 3 h, and the Fe3C can be generated from the partial reduction of Fe2O3 with graphite, The main phase in samples calcined under 1650℃ for 3 h contained forsterite, Fe2O3, Fe3C and β-SiC. The compound powder of Mg2SiO4 and p-SiC was prepared through the carbothermal reduction process. The effects of different graphite proportion (theoretical proportion, exceeding 10%, 50% and 100%) and firing temperature (1550℃, 1600℃ and 1650℃) on the phase transformation and microstructure of the products were investigated by XRD, SEM and EDS. The results show that p-SiC powders were obtained at 1650℃ for 3 h when graphite content was theoretical.
Xiaochao Li Zhaohui Huang Yanggai Liu Minghao Fang
School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
国际会议
长沙
英文
415-418
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）