Peculiarities of glass ceramics formation from red clay-cullet-waste activated sludge-hematite mixtures

In the work, an analysis of the phase formation process proceeding in a quaternary red clay-low-melting cullet-iron oxide (Fe2O3)-WAS (waste activated sludge) system in treatment at 1000oC in air has been performed. It has been established that, in sintering of the mixtures, porous ceramics consisti...

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Bibliographic Details
Published in:Science of sintering 2022, Vol.54 (3), p.249-264
Main Authors: González, Molina, Parra, Parra, Márquez Aguilar, Pedro, Tapia, Rene, Reséndiz González, Mary, Rosales-Cadena, Isai, Vlasova, Marina
Format: Article
Language:English
Subjects:
Activated clay
Activated sludge
Ceramics
Clay
Compressive strength
Cooling
Cristobalite
cullet
fe2o3
Glass ceramics
Heat
Hematite
Inclusions
Iron
Iron oxides
Mixtures
Quartz
red clay
Silicates
Sintering
Sintering (powder metallurgy)
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Summary:In the work, an analysis of the phase formation process proceeding in a quaternary red clay-low-melting cullet-iron oxide (Fe2O3)-WAS (waste activated sludge) system in treatment at 1000oC in air has been performed. It has been established that, in sintering of the mixtures, porous ceramics consisting of a glass phase alloyed with iron ions with inclusions of cristobalite, iron-containing silicates of complex composition, ?-Fe2O3, and an insignificant amount of Fe3O4 forms. The porous glass ceramics meets the compressive strength requirements imposed on building bricks.
ISSN:0350-820X
1820-7413
DOI:10.2298/SOS2203249G