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Sintered alumina

Sintered alumina has coarse crystals, a well-developed plate-mounted crystal structure, more closed pores and small intracrystalline pores, so it has excellent volume stability and thermal shock resistance.- ZIBO HANHAI NEW MATERIAL CO.,LTD

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Product Description

Sintered alumina

    Sintered alumina has coarse crystals, a well-developed plate-mounted crystal structure, more closed pores and small intracrystalline pores, so it has excellent volume stability and thermal shock resistance

ApplicationUsed as aggregates and powder in alumina-based and alumina-contained refractories ,it has been widely used in metallurgical industry (such as ladle lining refractories , sliding plate , purging plug, well-block ,stopper , long nozzle and submerged entry nozzle for con-casting, etc.) and other industries like ceramics petrochemical, glass, etc.


Chemical index

Item


Specification

Typical values

Chemical   compositon %

Al2O3

99.20

99.37

Na2O

0.40

0.28

SiO2

0.15

0.06

Fe2O3

0.07

0.04

Magntic Fe,%

0.02

0.01

Bulk   density,g/cm3

3.50

3.66

Apparent   porosity,%

5.00

3.1

Water   absorption,%

1.50

0.80

 


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