CALCINED ALUMINA is generally used in the manufacture of high-grade ceramic shapes, refractories and abrasives.
CALCINED ALUMINA
Type Itmes | A0546 | A0543 | A0532 | A1023 | A1012 | A1002 | ||
Chemicals (%) | Al2O3 Min. | 99.80 | 99.80 | 99.80 | 99.60 | 99.60 | 99.20 | |
Na2O Max. | 0.04 | 0.04 | 0.05 | 0.10 | 0.10 | 0.30 | ||
SiO2 Max. | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.06 | ||
Fe2O3 Max. | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 0.05 | ||
L.O.I. Max. | 0.04 | 0.04 | 0.04 | 0.05 | 0.05 | 0.06 | ||
Specific Gravity Min. | 3.97 | 3.97 | 3.96 | 3.94 | 3.92 | 3.90 | ||
Alpha-Al2O3 Min. | 97 | 97 | 96 | 95 | 93 | 90 | ||
Crystal size (micron) Min. | 4-6 | 3-4 | 2-3 | 2-3 | 1-2 | 1-2 | ||
Grits size (micron) | D50 value be from 45 micron to 1 micron. | |||||||
application | Engineering science ceramic | * | * | * | * | * | ||
Electronic ceramic | * | * | * | * | * | |||
Insulation ceramic | * | * | * | * | * | * | ||
Refractory ceramic | * | * | * | * | * | * | ||
Abrasive ceramic | * | * | * | * | * | * | ||
Applicablity For molding | Hot-die-casting | * | * |
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Static press | * | * | * | * | * | |||
Dry press | * | * | * | * | * | |||
Hydro-flowing | * | * | ||||||
Extrusion | * | * | * | * |