Alumina bubble brick using Alumina hollow ball as main raw material, high performance alumina ultrafine powder as additive, organic matter do binder, forming after drying, alumina hollow ball fired at 1750 ℃ high temperature furnace to make category under light corundum insulation brick, this material with low thermal conductivity, heat preservation,high compressive strength, max working temp under 1800 ℃, Alumina bubble brick has excellent heat resistance performance and heat insulation performance, which can be directly used as the working lining of high temperature kiln.Mainly used in the metallurgical ,refractories,ceramics,petrochemical,It can be used as the hot face refractory lining of pyrolyzer,hot blast furnace ,reheating furnace,tunnel kiln ,pushed slab kiln,crucible furnace ,electric furnace ,etc .
Features Of Alumina Bubble Brick
High mechanical strength;
Low thermal conductivity;
Low bulk density (lighter than the same kind of material ,thin kiln wall, low cost )
Mainly apply to the insulation layer of coal-water slurry gasifier
Excellent thermal insulation
Good chemical stability (acid-base erosion resistance ).
High compressive strength
Applications Of Alumina Bubble Brick
Mainly used in the industries such as metallurgical ,refractories,ceramics,petrochemical,It can be used as the hot face refractory lining of pyrolyzer,hot blast furnace ,reheating furnace,tunnel kiln ,pushed slab kiln,crucible furnace ,electric furnace ,etc.
Specifications Of Alumina Bubble Brick
Alumina contents range from 85% to99%
Widely used throughout metallurgical industry
Physical And Chemical Indicators For Alumina Bubble Brick
Bulk Density (g/cm3)
Cold Crushing Strength (MPa)
Permanent Linear Change (%) @ 1600℃
Thermal conductivity (W/m.k)@ 800℃
Maximum Service Temperature(℃)
General Industrial Furnace etc