CAS NO.: 1344-28-1 MF:AL2O3

Using high quality raw materials, calcined alumina is being produced in the rotary kiln on the reasonabletemperature, with the characteristic of high conversion rate, stable crystallization and low impurity content.
Its products have excellent performance of high mechanical strength, stable shrinkage rate, goodelectrical insulation, high wear resistance, and outstanding corrosion resistance.
Uses:
● various abrasives, abrasive tools and fillers
● fine powder of various ceramic and refractory grade alumina
● high alumina structural ceramic
● electronic components, high insulating ceramic

Al2O3 Calcined alumina feature

  (1) High melting point abd excellent mechanical strengh

  (2) High strengh and stiffness

  (3) Featured with small tempreature difference and long socking time

  (4) High crystal phase transition rate and good batch stability

  (5) It is easy to mill, and the milling time can be reduced by 10%-15%

  (6) Excellent dielectric properties (from DC to GHZ frequencies)

 

Alpha-alumina

 

The high-performance alpha alumina series(including the powder and fine powder) are mainly in tunnel kiln calcine, using unique production process,relying on strong technical development strength.the products with stable quality,and perfect after-sale technical service, can meet different requirements of customers.

 

1): Activated alpha-alumina low sodium microcrystalline

	Chemical components %				α-Al2O3 %	Effecive density g/cm3	Particle sizeμm
	Al2O3	Na2O	SiO2	Fe2O3
A-LN-05	≥99.0	≤0.06	≤0.2	≤0.1	≥95	≥3.93	0.5-1.0
A-LN-10	≥99.0	≤0.06	≤0.2	≤0.1	≥95	≥3.93	1.0-1.5

Note: the particle size is processed as customers requirement

 

Main properties:

Grain size smaller, Higher sintering activity

Sodium Oxide content is very low

Fine powder grinding, the partical size narrow well distributed

used for refractory castable, lower water needing

used in porcelain ball and wear-resistant parts, low sintering temperature, heavy sintering

density

 

Main Usage

Fine procelain ball and raw material of wear-resistant parts

Chemical filling materials, raw material of alumina balll

Fine powder of refractory castable

 

 

 

2): calcined alpha-alumina low sodium

Note: the particle size is processed as customers requirement

 

Main Properties

Reasonable temperature calcination, high alpha conversion rate

Sodium oxide content ultra low

Stable shrinkage rate

Finess grinding, suitable partical size and narrow partical size distribution

 

Main uses:

Raw material precision electronic ceramics

Raw material special engineering ceramics

 

 

3): Stainless steel polishing alumina

 

Main Properties:

Reasonable temperature calcination, high conversion rate

High hardness, strong cutting force, high polishing efficiency

Better glossiness, non-scratching

Low oil absorption rate

Finess grinding, suitable partical size and narrow partical size distribution