A refractory material is defined as a non-metallic material which is chemically inert and retains its strength at high temperatures above 1000C.  Refractory materials are used in furnace linings, kiln furniture, foundry moulds and space shuttle tiles.  RBH offers a range of premium grade zircon sands and flours and Molochite calcined china clay for investment casting moulds and ceramic bodies and glazes.

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