Sinterability Study Of Ceramic Bodies Made From A Mixture Of Mineral Coal Bottom Ash And Soda-Lime Glass Cullet  

Oleh:

Villanova, Daniela L. ; Bergmann, Carlos P.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 25 no. 1 (Feb. 2007), page 77-82.
Topik: Bottom ash; soda-lime glass cullet; ceramics; sinterability; temperature window; wmr 983–5
Fulltext: 77.pdf (465.59KB)

Isi artikel

The aim of this study was to investigate the sinterability to improve the technical properties of ceramic bodies made from coal bottom ash and soda-lime glass cullet. Different mixtures of bottom ash and glass cullet were formulated. The amount of bottom ash was 100, 70, 50 and 30 wt.%. The particle size distribution was the same for all formulations. The mixture containing 50 wt.% bottom ash also had its particle size distribution changed. Samples were formed by dry pressing and then fired at 950, 1050 and 1150°C. Samples were evaluated for linear shrinkage, water absorption, flexural mechanical resistance, scanning electronic microscopy, pyroplastic deformation and thermodilatometric analysis. The higher firing temperature led to a decrease in water absorption and increased linear shrinkage, mechanical resistance and pyroplastic deformation. This effect was also observed for addition of glass up to 50 wt.%. The effect of smaller particles of bottom ash was more significant for linear shrinkage and mechanical resistance of ceramic bodies fired at 1150°C. The use of a finer powder contributed to increase these properties. The influence of finer particles on water absorption and mechanical resistance of ceramic bodies fired at 950 and 1050°C was not significant.

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