Bubble Alumina


Bubble alumina brick used the alumina hollow ball as the main raw material, high-performance powder as additives, and organic material from the temporary binding agent .After mixing, drying, forming, and firing at high temperature shuttle kiln made
  • Bubble Alumina
  • Bubble Alumina
  • Bubble Alumina
  • Bubble Alumina
  • Bubble Alumina
  • Bubble Alumina
Bubble Alumina
Bubble Alumina
Bubble Alumina

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Description

Bubble Alumina Description:

The bubble alumina brick used the alumina hollow ball as the main raw material, high-performance powder as additives, and organic material from the temporary binding agent .After mixing, drying, forming, and firing at high temperature shuttle kiln made. 

 

Charactaritic:

1. High purity; 
2.High mechanical strength; 
3.Low thermal conductivity; 
4.Good stability

5. Mainly apply to the insulation layer of coal-water slurry gasifier

6. Excellent thermal insulation

7. Long service life

8. High compressive strength

9. Competitive price

 

Application

Application:

Bubble alumina brick is widely used in metallurgy, refractories, light industry, chemical industry, ceramic, glass, electronic industries.

It can be used in cracking furnace, Hot Blast Stove, Shuttle kiln, heating furnace, tunnel kiln, push board kiln, pot furnace, and kinds of electric furnace and electrical kiln lining and so on.

Specification:

Item

85

90

99

Chemical composition

Al2O3

≥85

≥90

≥99

SiO2

≤13

≤8

≤0.2

Fe2O3

≤0.5

≤0.5

≤0.5

Apparent Porosity%

58-62

58-62

58-62

Bulk Density g/cm3

1.4-1.7

1.4-1.7

1.4-1.7

Cold Crushing Strength Mpa

≥12

≥10

≥9

0.1Mpa Refractoriness Under Load T0.6 °C

≥1650

≥1700

≥1700

Permanent Linear Change On Reheating

(%)1500°CX2h

±0.3

±0.3

±0.3

20-1300°C Thermal Expansion  % (x 10-6)

0-7.8

0-8.0

0-8.6

Thermal Conductivity(Average 800°C) W/(M.K)

≤0.8

≤1.3

≤1.5

Max Service Temperature °C

1680

1700

1800

 

 

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