Hollow Alumina Sphere Bricks

Hollow Alumina Sphere Bricks
1,Hollow Alumina Sphere Bricks
2,high temperature resistance
3, low thermal conductivity

Hollow Alumina sphere bricks are sintered at high temperture after molding using hollow alumina sphere, corundum powder,and calcinedpowders mixed in definite proportion as raw material. Characteristic 1,high temperature resistance,2,low thermal conductivity,3,good thermal insulation,4,good chemical stability (acid-base erosion resistance ),5, low bulk density (lighter than the same kind of material ,thin kiln wall, low cost ) . Scope of application They are widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.
Physical and Chemical Indexes of Hollow Alumina Sphere Bricks Chemical composition 2O3 % ≥ 2O3 % ≤ 2 % ≤ Bulk density g/m3≤ Compressive strength at normal temperature MPa≥ Hot side 1000°C W/m.k≤