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Closed Access item Hydrolysis and Heat Treatment of Aluminum Dust

Authors:López Gómez, Félix Antonio
Peña, Carmen
López-Delgado, Aurora
Keywords:Hidrolysis, Treatment of aluminum, Dust
Issue Date:2001
Publisher:Taylor & Francis
Citation:Journal of the Air & Waste Management Association 51 (6) : 903-012 (2001)
Abstract:Aluminum dust is a toxic and hazardous byproduct of Al remelting. The present research was performed to characterize and evaluate its behavior in water. The materials obtained by hydrolysis were also characterized, and the gases generated during the process were qualitatively analyzed. The effects of hydrolysis reaction time and temperature on the dust were also explored. The hydrolysis of Al dust is an exothermic reaction that gave rise to a solid composed of aluminum oxide, silicon oxide, and spinel (MgAl2O4). Most of the CH4, NH3, and SH2 gases generated were emitted immediately upon the start of the reaction, though their production continued for a long time. This slow reaction, which was moderately accelerated by temperature, led to the formation of a material less reactive than the untreated dust. On the other hand, heat treatment of the dust gave rise to an inert material composed of spinel, alumina, and magnesium and aluminum silicates.
Publisher version (URL):http://dx.doi.org/10.1080/10473289.2001.10464314
Appears in Collections:(CENIM) Artículos

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