1 research outputs found
Study by DTA/TG of the formation of calcium aluminate obtained from an aluminium hazardous waste
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
productsMEC for financing
project CTM2005-01964 and the company Recuperaciones y Reciclajes
Roman S.L. (Fuenlabrada, Madrid, Spain) for supplying the
waste and Dr. M. I. Mart谋麓n for the FRX analysis and Dr. I. Padilla for
the technical assistance. Laura Delgado-Gonzalo is grateful to the
CSIC (Spanish National Research Council) for an I3P contractPeer reviewe