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The significance of clay-water relationships in ceramics

Published online by Cambridge University Press:  14 March 2018

D. A. Holdridge
Affiliation:
British Ceramic Research Association, Penkhull, Stoke-on-Trent
F. Moore
Affiliation:
British Ceramic Research Association, Penkhull, Stoke-on-Trent
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Extract

The mineral present in most clays used in the fine ceramics industries is kaolinite. Both china clays and ball clays consist essentially of this mineral in association with quartz and some form of mica. There is some evidence for the presence of traces of montmorillonite in certain of the Cornish china clays (Clark, 1950) and a method of estimating this has been reported (Parker, Warren and Morcom, 1951). Work at the British Ceramic Research Association has shown that many Dorset ball clays are largely composed of a disordered kaolinite similar to Brindley and Robinson's fireclay mineral (1947); such clays are frequently more plastic than other ball clays and show high mechanical strength. Other ball clays contain normal kaolinite of finer particle size than the average china clay and in exceptional cases may show strengths equalling those of the disordered kaolinite.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1953

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