煅烧氧化铝
CAS NO.: 1344-28-1
MF:AL2O3
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 |
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
| Chemical components % | α-Al2O3 % | Effecive density g/cm3 |
Particle size μm | ||||
| Al2O3 | Na2O | SiO2 | Fe2O3 | ||||
| B-LN-10 | ≥99.0 | ≤0.05 | ≤0.2 | ≤0.1 | ≥97 | ≥3.96 | 1.5-2.0 |
| B-LN-20 | ≥99.0 | ≤0.05 | ≤0.2 | ≤0.1 | ≥97 | ≥3.96 | 2.0-3.0 |
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
| Chemical components % | α-Al2O3 % | Effecive density g/cm3 |
Particle size μm | ||||
| Al2O3 | Na2O | SiO2 | Fe2O3 | ||||
| C-MN-10 | ≥99.0 | ≤0.25 | ≤0.2 | ≤0.1 | ≥97 | ≥3.96 | 1.0-2.0 |
| C-MN-20 | ≥99.0 | ≤0.25 | ≤0.2 | ≤0.1 | ≥97 | ≥3.96 | 2.0-4.0 |
| C-MN-30 | ≥99.0 | ≤0.25 | ≤0.2 | ≤0.1 | ≥97 | ≥3.96 | 4.0-5.0 |
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
