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  • Product Name: Calcined alumina
  • ID: d03

Calcined alumina

Product introduction:
       Calcined alumina powder is made by using industrial aluminium hydroxide or industrial Y-alumina as starting material, and calcined at proper temperature with addition of boron-free mineralizer to form stable alpha alumina crystal with suitable original crystal sizes. Refractory products added with such calcined alumina powder will have improved mechanical strength, higher hardness, higher electric resistivity and thermal conductivity. The product can be widely used in electronic ceramics, structural ceramics, refractories, abrasives, polishing materials, etc .

 

Technical Indicators:

Data sheet of calcined alumina

Item

Unit

DA50

DA30

Chemical
Composition
%

Al2O3

%

≥99.5

≥99.5

Na2O

%

≤0.30

≤0.30

SiO2

%

≤0.06

≤0.06

CaO

%

≤0.03

≤0.03

Fe2O3

%

≤0.04

≤0.04

Fe

%

≤0.02

≤0.02

D50 Cilas

μm

5.0-7.0

3.5-5.0

BET

m2/g

0.5-1.5

1.0-2.0

Particle Size Distribution

 


Mono-modal


Mono-modal

 

Size availability:
  Powders from under 45μm down to 2μm can be provided.
Product packaging:
  25kg/bag or other packages as per user’s requirements are available.