Alumina bubble brick

Short Description:

Alumina bubble brick is one of the ultra-high temperature material energy-saving insulation materials. It uses alumina hollow spheres as the main raw material and combines with other binders to fire alumina hollow spheres in a high temperature furnace at 1750℃. Alumina bubble brick has the characteristics of low thermal conductivity, good heat preservation, high compressive strength, and can work at temperatures below 1800°C. It has excellent heat resistance and heat insulation properties, and excellent energy saving.


Product Detail

Product Tags

Description

Alumina bubble brick is one of the ultra-high temperature material energy-saving insulation materials. It uses alumina hollow spheres as the main raw material and combines with other binders to fire alumina hollow spheres in a high temperature furnace at 1750℃. Alumina bubble brick has the characteristics of low thermal conductivity, good heat preservation, high compressive strength, and can work at temperatures below 1800°C. It has excellent heat resistance and heat insulation properties, and excellent energy saving.

Features

Low thermal conductivity / Low density and light weight / Good thermal stability

Excellent insulation / Good chemical stability / Energy saving

Application

Alumina bubble brick is widely used in high temperature and ultra-high temperature furnaces such as petrochemical industrial gasifiers, carbon black industrial reaction furnaces, metallurgical industrial induction furnaces, etc., and are effective in reducing the weight of the furnace body, transforming the structure, saving materials, and saving energy. Obvious results have been achieved.

Physical And Chemical Indicators

Brand / Properties

LG-99

LG-90

LG-85

ChemicalAnalysis(%)

Al2O3

≥99

≥90

≥85

SiO2

≤0.3

≤7

≤13

Fe2O3

≤0.1

≤0.1

≤0.2

Bulk Density (g/cm3)

1.45~1.60

1.45~1.60

1.45~1.60

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

Productive Process

1.Raw material quality control including physical and chemical testing.           
2.Crushing and grinding of bulk raw materials.
3. According to customer data sheet required to mixing Raw Material.
Pressing or shaping the green brick depend on different raw material and brick shape.
4.Dry the bricks at dryer kiln.
5.Put the bricks into the tunnel kiln to burning by higher temp from 1300-1800 deg.
6.The quality control department will inspect the finished refractory bricks random.

Packing And Shipping

Packaging  according to safety sea-exporting packing Standard
Dispatch : loading the finished packing material at factory by container Door toDoor   
By sea fumigated wooden pallet + plastic belt  + plastic film wrap.


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