Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/2080
Title: Study of loss-on-ignition anomalies found in ashes from combustion of iron-rich coal.
Authors: Vandenberghe, Robert Emile
Resende, Valdirene Gonzaga de
Costa, Geraldo Magela da
Grave, Eddy De
Keywords: Fly ash
Bottom ash
Loss on ignition
Mössbauer spectroscopy
Issue Date: 2010
Citation: VANDENBERGHE, R. E. et al. Study of loss-on-ignition anomalies found in ashes from combustion of iron-rich coal. Fuel, v. 89, p. 2405-2410, 2010. Disponível em: <https://www.sciencedirect.com/science/article/pii/S001623611000030X>. Acesso em: 28 jan. 2013.
Abstract: Samples of a fly and a bottom ash, each before and after ignition at 960 _C, have been studied by X-ray diffraction, Mössbauer spectroscopy, carbon analysis, and thermogravimetric analysis with the aim to explain an observed negative loss on ignition. Ashes after ignition contain more maghemite resulting from oxidation of newly formed magnetite. Moreover, the fly ash that already contained magnetite exhibited an increase of hematite after ignition. Hercynite present in both ashes transforms to hematite and magnetite after the ignition. All these oxidation processes are responsible for a weight gain which may compensate the loss due to the burning of the remaining carbon in the ashes. Also, a-Fe is formed after ignition which may have originated from wustite.
URI: http://www.repositorio.ufop.br/handle/123456789/2080
ISSN: 00162361
metadata.dc.rights.license: O periódico Fuel concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3313110432955.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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