In this work, we demonstrate a novel synthesis of synthetic rutile from high titanium slag. This rutile TiO2was obtained by a simple one-step microwave roasting route. The influence of microwave roasting temperature and duration on the phase transformation of high titanium slag has been assessed. X-ray diffraction (XRD) results indicate that the intensity of anosovite (Fe3Ti3O10) phase, which were the major phase of high titanium slag of carbon thermal reduction of ilmenite ores, decreased rapidly while the peaks for rutile TiO2phase increased with increase in the microwave roasting temperature. The scanning electron microscope (SEM) images revealed formation and the particle-size distribution of rutile TiO2phase. Based on XRD and SEM analysis, confirmed the dependence of phase structure, composition and crystallite size on the process conditions of microwave roasting.
Bibliographical noteFunding Information:
Financial supports from the National Scientific Foundation of China [grant number 51504110], [grant number 51404114]; Open Research Fund of State Key Laboratory of Multiphase Complex Systems [grant number MPCS-2017-D-05]; Specialized Research fund for the Doctoral Program of High Education [grant number 20125314120014] were sincerely acknowledged.
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- Microwave heating
- high titanium slag
- phase transformation
- rutile TiO
- structural performances