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Non-isothermal carbothermic reduction kinetics of mechanically activated ilmenite containing self-reducing mixtures
Minerals Technology Division, Pyrometallurgy Department, Central Metallurgical R&D Institute (CMRDI), Cairo .
Minerals Technology Division, Pyrometallurgy Department, Central Metallurgical R&D Institute (CMRDI), Cairo .
Minerals Technology Division, Pyrometallurgy Department, Central Metallurgical R&D Institute (CMRDI), Cairo .
Minerals Technology Division, Pyrometallurgy Department, Central Metallurgical R&D Institute (CMRDI), Cairo .
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2017 (English)In: Journal of thermal analysis and calorimetry (Print), ISSN 1388-6150, E-ISSN 1588-2926Article in journal (Refereed) Epub ahead of print
Abstract [en]

Effect of mechanical activation on carbothermic reduction kinetics and mechanism of ilmenite concentrate containing self-reducing mixture has been investigated using a combination of thermogravimetry and X-ray diffraction. Thermogravimetric comparative study of mechanically activated and non-activated ilmenite concentrate containing self-reducing mixtures with C/O molar ratio of 1.5 was conducted non-isothermally. The samples were heated up to 1573 K at three different heating rates (10, 15, and 20 K min−1) under controlled atmosphere. The reduction mechanism of mechanically activated mixture was followed by X-ray diffraction analysis of arrested samples at different reduction extents. In addition, reaction kinetics was further investigated and corresponding kinetic parameters were estimated using isoconversional (model-free) and model-fitting (Coats–Redfern) methods.

Place, publisher, year, edition, pages
Springer, 2017.
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
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URN: urn:nbn:se:ltu:diva-66100DOI: 10.1007/s10973-017-6743-0OAI: oai:DiVA.org:ltu-66100DiVA: diva2:1148880
Available from: 2017-10-12 Created: 2017-10-12 Last updated: 2017-11-24

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