Refractory materials are chemically and physically very stable at high temperatures. Depending up on the operating environment, they have to be resistant to thermal shock, chemically inert, and/or have specific ranges of thermal conductivity and of the coefficient of thermal expansion. The most common materials used in the manufacturing of refractories (fired and monolithic) are Aluminium oxides and Silicon Carbide. Other materials are zirconia, magnesium, fused spinal, fused mullite, bubble alumina etc.
Kowa’s various refractory grains are chemically and physically stable at high temperatures, of high toughness and high good anti-impact ability, thermal shock resistant etc. Hence these are the right products for manufacturing refractories like crucibles, Kiln furniture, furnace lining, Tap hole and ramming mass etc.