AluminaInsulationBrickFactory Alumina bubble brick is made of tiny hollow insulating balls made of high-purity alumina(also known as foam alumina).Alumina bubble bricks are suitable for applications up to 1700掳C.These bricks have excellent insulation properties and high thermal strength. Alumina does not exhibit high thermal conductivity锛宎nd when in the form of hollow spheres锛宨ts thermal conductivity is further reduced. These two characteristics make alumina bubble brick an excellent insulating material锛寃hich can withstand extremely high temperatures. Performance Characters of Alumina Bubble Brick 1.High porosity. 2.Small volume density. 3.Good insulation effect. 4.High mechanical intensity. 5.Small thermal conductivity. Application of Alumina Bubble Brick Alumina Bubble bricks are made with tiny hollow insulating spheres made from high-purity alumina (also called bubble alumina). Alumina Bubble brickAl2O3Bulk DensityC.C.SP.L.C(%)Thermal ConductivityR.U.L 銆€-(%)(g/cm3)(MPa,Min)1600鈩?3h(W/mk)(0.2MPa,鈩? KR-90901.110卤0.30.81650 KR-90901.312卤0.30.81700 KR-95951.512卤0.30.71750AluminaInsulationBrickFactory website:http://www.refractorygroup.com/insulation-bricks/alumina-insulation-brick/