ball clay


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ball clay

[′bȯl ‚klā]
(materials)
A clay used in ceramics that is characterized by strong binding properties, a tendency to ball, and excellent plasticity.
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The demand for kaolin is increasing because of its whiteness and fine particle size, which make it different from other clays, such as fireclay and ball clay. Kaolin has other physical properties such as glossiness, brightness, abrasiveness, and viscosity, which influence its commercial utility.
(OHCC) has the largest ball clay reserve base in the United States, comprised of Kentucky clays, Tennessee clays and Mississippi clays.
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The term ceramics technically covers all works of clay whether fired or unfired; from the terracotta or red clay found in local lakes and rivers as sediment, or manufactured as conglomerates of related geological material like feldspar, quartz, ball clay, etc., to form clays that withstand higher temperatures such as earthenware, stoneware and porcelain.
Rajasthan is a large producer of minerals such as lead, zinc, gypsum, soapstone, ball clay, calcite, rock phosphate, feldspar, kaolin, copper, jasper and silver, among others.
In the early 1990s the American ceramic artist Bob Shay visited Denmark and delivered a workshop, organized by the Clay Today group, where he introduced his method of working with a mixture of ball clay and Perlite (an amorphous volcanic glass).
Responding to the needs of our customers, we have also become a major producer of feldspar, dolomite, southern bentonite, ball clay, kaolin, and blended mineral products.
There is a recipe for it in a book of 1789, and reads, "20 blue ball clay, 5 calcined carr, 1.5 calcined manganese all to be mixed by measure in the slip", that is mixed to a cream-like consistency ready to be poured into moulds.
WRAP is also contributing around $541,000 to a new plant being built by WBB Minerals, which will process ball clay waste into fine aggregate.
I work with a low-fire clay body consisting of ball clay, talc and bentonite.
The transaction includes the ball clay, kaolin, and feldspar operations of Hecla, and was expected to be closed during the first week of April, subject to regulatory approval.