• Yangzhuang Industrial Zone, Zhenwu Town, Jiangdu District, Yangzhou, Jiangsu Province, P.R. China
  • 86-(0)514-86236087
  • iris.pan@jsjxgf.com

Calcined alumina

Short Description:

Calcined alumina powder is made by using industrial aluminium hydroxide or industrial

γ-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 .

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.


Product Detail

Product Tags

Data sheet of JDA calcined alumina

 

Specification

Typical value

  % Chemical composition Al2O3 ≥99.20

99.30

SiO2

≤0.08

0.05

Fe2O3

≤0.04

0.01

Na2O

≤0.40

0.15

g/cm3

True density

 

≥3.90

 

3.96

μm

Original crystal size

 

1-3

 

1.98

%

α-Al2O3 content

 

≥95

 

96


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