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calcined alumina micropowder is made by using industrial alumina as raw materials and calcined at proper temperature under which stable α-alumina micro-powder is formed. Alumina products with such calcined alumina powder as raw material have excellent mechanical strength, high hardness, higher electric resistivity and good thermal conductivity. The calcined alumina micropowder can be widely used in electronic equipment, structural ceramics, refractories, abrasives, polishing materials, etc.
25kg/bag,1000kg/bag or other specific packing according to user’s requirements.
Item | Specification | ||
DA30 | DA50 | General Type | |
Al2O3(%) | ≥99.5 | ≥99.5 | ≥99.4 |
Na2O(%) | ≤0.25 | ≤0.25 | ≤0.40 |
SiO2(%) | ≤0.06 | ≤0.06 | ≤0.08 |
Fe2O3(%) | ≤0.04 | ≤0.04 | ≤0.04 |
CaO(%) | ≤0.03 | ≤0.03 | ≤0.03 |
D50/Malvern(μm) | 3.0-5.0 | 5.0-7.0 | 4.0-6.0 |
BET(m2/g) | 0.5-2.0 | 0.5-2.0 | 0.5-2.0 |
Particle Size Distribution | Monomodal | Monomodal | Monomodal |
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