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7.Calcined α- Alumina
Please click on the following grades to view detailed specification.
Calcined α- Alumina
(SERIES OF MINERALIZER AND LOW SODIUM CONTENT)
PROPERTY:
This product is featured with white powder,loose massive,easy to crush,stability in the high temperature,not dissolve in water. It is difficult to dissolve in acid and alkaline solution. It is suitable for the production roll membrane,dry-pressed forming and so on,the prodcuts hae the low rate of contraction.the original crystal particles 2micron-5micron.
MAIN USEAGE:
This product is used in polishing of different kinds of alumina products(primarily for rough polishing),high-class aluminum refractory material,unshaped refractory materials(high-class aluminum casting material) high temperature ceramic pieces,wear-resistant ceramic pieces,electronic substrate,ceramic,roll sticks,and so on.
SPECIFICATION:
Category |
Index
Model |
Al2O3≥ (%) |
Impurities ≤(%) |
α-Al2O3≥(%) |
Specific gravity≥(g/cm3) |
D50 (micron) |
SiO2 |
Fe2O3 |
NaO2 |
Original powder |
T1 |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
40-60 |
T2 |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
40-60 |
T3 |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
40-60 |
Superine powder |
T1-A |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
2.0-4.0 |
T2-A |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
3.0-5.0 |
T3-A |
99.0 |
0.10 |
0.03 |
0.08 |
95 |
3.95 |
3.0-5.0 |
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