Ball Clay – Old Hickory 50 lb.
Ball Clay: The wide use of ball clay is due to its contribution of workability, plasticity and strength to the bodies in drying. It is typically mixed with non-plastic or less plastic clays for these properties. Ball clay is a variety of Kaolinite, like china-clay, but differs from china-clay in having high plasticity and less refractoriness. In chemical composition, ball and china clays do not differ greatly except that the former contains a larger proportion of silica. The high plasticity of ball clay is attributed to fine-graining and a small amount of montmorillonite.
Old Hickory: An exceptionally low organic, high kaolinite white ball clay.