Zirconia Bricks are highly refractory bricks made from stabilized zirconia.
Zirconia (ZrO2) has a very high melting point of 2680°C, so zirconia bricks can withstand extremely high temperatures without melting or decomposing.
Zirconia bricks are used in furnaces, kilns and incinerators due to their excellent resistance to slag, corrosion and spalling. They have low thermal conductivity and high density which makes them suitable for insulation of high-temperature equipment. Zirconia bricks are expensive but have a long service life.