Chlorination of Iron-Containing Nitrided Ilmenite Prepared by Carbothermal Process with Polystyrene and Coal

This work sheds light on the effect of carbothermal reduction and nitridation of ilmenite concentrate with the mixtures of Mukah coal and polystyrene as reducing agents under H2/N2 gas atmosphere on the chlorination process. Pre-reduced samples of ilmenite were chlorinated at 400-500°C for 1-3 hours...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-08, Vol.1082 (1), p.12061
Main Authors: Ahmadi, E., Amali Alis, F., Ahmad Fauzi, M.N., Baharun, N., Hussin, H., Ariffin, K.S., Ramakrishnan, S., Rezan, S.A.
Format: Article
Language:English
Subjects:
Carburizing
Chlorination
Design of experiments
Emission analysis
Ilmenite
Inductively coupled plasma
Iron
Low temperature
Optical emission spectroscopy
Physics
Polystyrene resins
Reducing agents
Statistical analysis
Statistical methods
Titanium
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Summary:This work sheds light on the effect of carbothermal reduction and nitridation of ilmenite concentrate with the mixtures of Mukah coal and polystyrene as reducing agents under H2/N2 gas atmosphere on the chlorination process. Pre-reduced samples of ilmenite were chlorinated at 400-500°C for 1-3 hours without removing metallic iron. The characterization of the synthesized materials was made by X-ray diffraction (XRD), scanning electron microscopy (SEM), and inductively coupled plasma-optical emission spectroscopy (ICP-OES) analyses. Design of Experiment (DOE) analysis was also applied to evaluate the significant factors and their interactions in low-temperature chlorination process. Statistical analysis indicated that Mukah-Balingian coal-to-polystyrene (C/PS) ratio was the most significant factor influencing the chlorination results. In addition, the highest extent of chlorination ~ 95.01% was achieved with the highest carburized and nitrided samples at 500 °C for 1 hour. The present study can be useful for the chlorination of different types of pre-reduced ilmenite concentrates with high efficiency of titanium tetrachloride production.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1082/1/012061