Ball Clay

Ball clays (also referred to as plastic clays) are fine-grained, highly plastic sedimentary clays, derived from kaolinite typically moved from decomposed feldspar present in igneous source rocks, such as granite. High quality ball clays are relatively scarce, and valued for their key properties of plasticity, rheology, unfired strength and light fired colour.

Ball clay is essential to ceramic body formulations due to its ability to enhance plasticity for shaping, improve green and dry strength, contribute to dimensional accuracy during firing, and balance shrinkage and vitrification.