Production of pulverised fuel ash tiles using conventional ceramic production processes

Autor:	E. Bou, Aldo R. Boccaccini, D. Lever, Christopher R. Cheeseman, M. F. Quereda
Rok vydání:	2009
Předmět:	Materials science Absorption of water Industrial and Manufacturing Engineering Pilot plant Pulverised fuel ash visual_art Spray drying Fly ash Ceramics and Composites visual_art.visual_art_medium Tile Ceramic Composite material Shrinkage
Zdroj:	Advances in Applied Ceramics. 108:44-49
ISSN:	1743-6761 1743-6753
DOI:	10.1179/174367509x345006
Popis:	The feasibility of manufacturing sintered ceramic tiles containing a high proportion of pulverised fuel ash (PFA) using conventional ceramic tile processing methods has been investigated at pilot plant scale. From earlier laboratory experiments, a composition containing 92⋅0 wt-%PFA, 5⋅0 wt-% sodium bentonite and 3⋅0 wt-% talc produced good quality small disc samples. The scale-up trials reported here used this same composition and involved deflocculant addition, wet milling, spray drying, pressing and firing, with the behaviour during each processing stage being characterised. Although there were no substantial technical problems associated with forming green tiles, the composition selected needed high levels of deflocculant and produced pressed samples with low green densities, resulting in high shrinkage during firing. The high dependence of shrinkage on temperature caused excessive tile distortion. In addition, sintered samples with less than 2% water absorption exhibited a bloating effect, re...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::02e66cfb88da07975c9903d8e9841333 https://doi.org/10.1179/174367509x345006 Zobrazit plný text záznamu Plný text ve formátu PDF