High-Temperature Mineral Formation after Firing Clay Materials Associated with Mined Coal in Teruel (Spain)
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Otros documentos de la autoría: Jordán Vidal, Manuel Miguel; Meseguer Costa, Sergio; Pardo Fabregat, Francisco; Montero, María Adriana
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Título
High-Temperature Mineral Formation after Firing Clay Materials Associated with Mined Coal in Teruel (Spain)Autoría
Fecha de publicación
2020-04-29Editor
MDPIISSN
2076-3417; 2076-3417Cita bibliográfica
Jordán, M.M.; Meseguer, S.; Pardo, F.; Montero, M.A. High-Temperature Mineral Formation after Firing Clay Materials Associated with Mined Coal in Teruel (Spain). Appl. Sci. 2020, 10, 3114.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.mdpi.com/2076-3417/10/9/3114/htmVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The production of porcelain stoneware has experienced a considerable increase. Therefore, it was necessary to undertake an investigation that would allow knowing the mineralogical evolution that porcelain stoneware ... [+]
The production of porcelain stoneware has experienced a considerable increase. Therefore, it was necessary to undertake an investigation that would allow knowing the mineralogical evolution that porcelain stoneware undergoes during the firing process, as well as establishing the influence of the formation of mullite and other mineral or vitreous phases and their quantification. The firing transformations of mine spoils associated with mined coal in the Utrillas-Escucha-Estercuel and Ariño-Andorra areas are studied in this paper. The mineralogical composition of the bulk mine spoils is kaolinite, illite, chlorite, and smectites (in traces), with quartz and feldspar, and minor hematite, calcite, and dolomite. The main objective is to understand the generation of high-temperature mineral phases after firing, and their quantification. The formation of mullite and other high-temperature phases are studied from samples that include variable proportions of illite. Samples with a high content of illite generate mullite at 995 °C. Cristobalite was not detected as a high-temperature phase. Mullite is the most abundant mineral. The hercynite content is higher at low temperatures (995 °C), and hematite content is higher at 1150 °C. The vitreous phase represents about 50% of fired bodies. Despite observing a porous microstructure, the non-porous areas are well sintered. [-]
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Applied Sciences, 2020, vol. 10, no 9Derechos de acceso
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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