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KYANITE 200M 50 pound bag:
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KYANITE – Al2O3lSiO2 (m.p. 3300o F/1800o C) is a non-plastic aluminosilicate and is typically not found in glazes. It can be added to clay bodies to stabilize shrinkage (due to its tendency to expand in firing) and improve strength. Its principal use is in the manufacturing of high temperature refractories for kiln bricks and furniture (see also Mullite).