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JUCOS Refractories > Shaped Refractories > Alumina Bubble Brick
Product Details

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 purity;

  • 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


                     Brand
       Properties                               
LG-99LG-90LG-85
ChemicalAnalysis(%)Al2O3≥99≥90≥85
SiO2≤0.3≤7≤13
Fe2O3≤0.1≤0.1≤0.2
Bulk Density (g/cm3)1.45~1.601.45~1.601.45~1.60
Cold Crushing Strength (MPa)≥15≥15≥20
Permanent Linear Change (%) @ 1600℃±0.2±0.2±0.3
Thermal conductivity (W/m.k)@ 800℃≤1.4≤1.4≤1.4
Maximum Service Temperature(℃)≥1800≥1700≥1600
 Main Applications       Reheating Furnace
       Blast Furnace
       Petrochemical Furnace
       General Industrial Furnace etc
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