clay refractory

Clay refractories are nonmetallic materials designed to withstand high temperatures, primarily used in furnaces for metallurgical and glass manufacturing processes. These refractories are made from fireclays, which are hydrated aluminum silicates, and can be classified based on their alumina content and impurity levels, ranging from low-duty to super-duty.12

Fireclay bricks are a common type, exhibiting moderate resistance to thermal shock and being relatively inert in acidic environments but reactive in basic ones. Higher alumina content refractories, such as high-alumina and mullite ceramics, offer greater robustness at high temperatures and in basic conditions, with mullite being particularly stable. These materials are crucial components in various industrial furnaces due to their ability to maintain structural integrity under extreme heat.2