Abstract
In this paper, phase transition of forsterite in carbothermal reduction processing was studied. Phase composition and microstructure of the products were characterized by XRD, SEM and XRF. The influences of calcination temperature (1400, 1500, and 1600 °C), carbon content (lacking 50% and 10%, theoretical content, exceeding 10%, 50% and 100%) and holding time (1 h, 2 h and 4 h) on phase composition of carbothermal reduction products were discussed. The results showed that forsterite can be reduced to β-SiC, Fe and MgAl2O4 when it was reacted with carbon exceeded 50wt% of theoretical content at 1600°C for 4 h, while it was stable when treated below 1500°C.
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