a fine dark kaolinic clay that turns white or nearly white when fired, used in the manufacture of a wide variety of ceramic wares in combination with other clays for its exceptional bonding properties and plasticity.
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How to use ball clay in a sentence
The use of a ball clay is therefore limited in white wares because it will spoil the color.
For earthenware or china, the English potters use only two sorts of clays: the ball clay, also called blue clay, and the kaolin.British Manufacturing Industries | L. Arnoux
ball clay is very plastic, easily vitrified, but is not white.
If it shrinks too little, a little ball clay will correct it.
Pipe clays are an inferior quality of ball clay; they contain rather more iron and alkalies and considerably more silica.The Natural History of Clay | Alfred B. Searle