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Study by DTA/TG of the formation of calcium aluminate obtained from an aluminium hazardous waste

López Delgado, Aurora and López Gómez, F.A. and Gonzalo Delgado, Laura and López Andrés, Sol and Alguacil Priego, F.J. (2010) Study by DTA/TG of the formation of calcium aluminate obtained from an aluminium hazardous waste. Journal of Thermal Analysis and Calorimetry, 99 (3). pp. 999-1004. ISSN 1388-6150

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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 ºC. At
temperatures between 719 and 744 ºC, the precursors
evolve towards the formation of C12A7 which becomes CA
at circa 1016 ºC. Mass spectrometry coupled to thermal
analyser allowed the identification of the decomposition
products.


Item Type:Article
Additional Information:

The original publication is available at www.springerlink.com

Uncontrolled Keywords:Aluminium waste, Calcium aluminate, TG/DTA
Subjects:Sciences > Geology > Crystallography
ID Code:10546
Deposited On:26 Apr 2010 12:15
Last Modified:02 Sep 2011 11:28

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