English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/46529
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


A hazardous waste from secodary aluminium metallurgy as a new raw material for calcium aluminate glasses.

AuthorsLópez-Delgado, Aurora ; Tayibi, Hanan; Pérez, Carlos; Alguacil, Francisco José; López Gómez, Félix Antonio
KeywordsHazardous waste
Secondary aluminium industry
Calcium aluminate glasses
Issue Date2009
CitationJournal of Hazardous Materials 165 (1-3) 180-186 (2009)
AbstractA solid waste coming from the secondary aluminium industry was successfully vitrified in the ternary CaO–Al2O3–SiO2 system at 1500 ◦C. This waste is a complex material which is considered hazardous because of its behaviour in the presence of water or moisture. In these conditions, the dust can generate gases such as H2, NH3, CH4, H2S, along with heat and potential aluminothermy. Only silica sand and calcium carbonate were added as external raw materials to complete the glasses formula. Different nominal compositions of glasses, with Al2O3 ranging between 20% and 54%, were studied to determine the glass forming area. The glasses obtained allow the immobilisation of up to 75% of waste in a multicomponent oxide system in which all the components of the waste are incorporated. The microhardness Hv values varied between 6.05 and 6.62 GPa and the linear thermal expansion coefficient, ˛, varied between (62 and 139)×10−7 K−1. Several glasses showed a high hydrolytic resistance in deionised water at 98 ◦C.
Publisher version (URL)http://dx.doi.org/:10.1016/j.jhazmat.2008.09.124
Appears in Collections:(CENIM) Artículos
Files in This Item:
File Description SizeFormat 
Journal of Hazardous Materials 165 (1-3) 180-186 (2009).pdf429,19 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.