Estudio del comportamiento térmico del polvo de aluminio estabilizado con el yeso

A. López-Delgado; J. A. Medina; P. Alonso; H. Tayibi; C. Pérez; F. A. López

doi:10.3989/revmetalm.2005.v41.iExtra.1050

Study of the thermal behavior of the aluminium dust stabilized with gypsum

Authors

A. López-Delgado Dpto. De Física de la Materia Condensada, Cristalografía y Mineralogía. Fac. CC. Químicas. Universidad de Valladolid
J. A. Medina Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSIC
P. Alonso Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSIC
H. Tayibi Dpto. De Física de la Materia Condensada, Cristalografía y Mineralogía. Fac. CC. Químicas. Universidad de Valladolid
C. Pérez Dpto. De Física de la Materia Condensada, Cristalografía y Mineralogía. Fac. CC. Químicas. Universidad de Valladolid
F. A. López Dpto. De Física de la Materia Condensada, Cristalografía y Mineralogía. Fac. CC. Químicas. Universidad de Valladolid

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1050

Keywords:

Aluminium dust, Stabilisation/solidification, Hazardous waste, Thermal analysis, Kinetics

Abstract

The aluminium dust is a hazardous waste from the secondary aluminium remelting industry. A stabilization/solidification process was developed at CENIM with the aim of decreasing its reactivity. Gypsum was used as a binder material. This work summarizes the study of the thermal behavior of the aluminium dust stabilized with gypsum, in order to establish the influence of the residue in the reactions of hydration/dehydration of the gypsum during the hardening process, namely: partial dehydration of calcium sulphate dihydrate, dehydration of calcium sulphate hemi-hydrate, dehydration of aluminium hydroxide and anhydrite soluble/anhydrite insoluble transformation. The activation energy associated to all those reactions was determined by Differential Scanning Calorimetry.

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Published

2005-12-17

How to Cite

López-Delgado, A., Medina, J. A., Alonso, P., Tayibi, H., Pérez, C., & López, F. A. (2005). Study of the thermal behavior of the aluminium dust stabilized with gypsum. Revista De Metalurgia, 41(Extra), 330–334. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1050

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Issue

Vol. 41 No. Extra (2005)

Section

Articles

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