Metall. Res. Technol.
Volume 117, Number 6, 2020
|Number of page(s)||8|
|Published online||29 October 2020|
A novel method for preparing Ti5Si3 from Ti-bearing blast furnace slag
Central Research Institute of Building and Construction, MCC Group Co Ltd., Environment Convention and Protection, MCC Group Co Ltd., State Key Laboratory of Iron & Steel industry Environmental Protection,
100088, PR China
2 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, PR China
* e-mail: firstname.lastname@example.org
Accepted: 1 October 2020
Effective recovery of titanium resources from titanium-bearing blast furnace slag had always been a difficult problem. In the present study, Ti5Si3 was synthesized via silicothermic reduction of titanium-bearing blast furnace slag. The effects of reduction temperature and reaction time on the formation of Ti5Si3 were studied by X-ray diffraction and scanning electron microscope. The results indicated that Ti5Si3 was the only silicide in the finally obtained products. Ti5Si3 will gradually sinter to form a porous skeleton, and a small amount of slag will be trapped in the porous skeleton of Ti5Si3. It provided a feasible route for the treatment of titanium-bearing blast furnace slag and the recovery of titanium resources. It was also found that the longer the reaction time and the higher the reaction temperature (1823 K), the less the slag trapped in the alloy will be.
Key words: Titanium-bearing blast furnace slag / silicothermic reduction / Ti5Si3
© EDP Sciences, 2020
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