Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 99: Issue 3
Study by DTA/TG of the formation of calcium aluminate obtained from an aluminium hazardous waste
Authors:
A. López-Delgado National Centre for Metallurgical Research, CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain

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F. López National Centre for Metallurgical Research, CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain

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L. Gonzalo-Delgado National Centre for Metallurgical Research, CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain

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S. López-Andrés Department of Crystallography and Mineralogy, Faculty of Geology, University Complutense of Madrid, Madrid, Spain

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F. Alguacil National Centre for Metallurgical Research, CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain

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Pages:
999–1004
Online Publication Date:
15 Dec 2009
Publication Date:
01 Mar 2010
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-009-0597-z
Keywords:
Aluminium waste; Calcium aluminate; TG/DTA
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Abstract  

A Spanish hazardous waste from tertiary aluminium industry was used as a raw material for the synthesis of calcium aluminate. An amorphous precursor was obtained by a hydrothermal method at different values of pH. The transformation of the precursor in a crystalline aluminate was followed by TG/DTA up to 1300 °C. At temperatures between 719 and 744 °C, the precursors evolve towards the formation of C12A7 which becomes CA at circa 1016 °C. Mass spectrometry coupled to thermal analyser allowed the identification of the decomposition products.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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