Fig. 6From: Applicability of carbothermic reduction for upgrading Sri Lankan ilmenite ores: towards converting ilmenite into synthetic rutile by mechanical activationFTIR spectra of 4 h milled ilmenite samples (a) annealed at 800 °C, (b) annealed at 900 °C, (c) annealed at 1000 °C, (d) annealed at 1100 °C, and (e) annealed at 1200 °CBack to article page