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Unground Calcined Aluminas

Unground Calcined Aluminas

Almatis offers a variety of unground calcined aluminas with primary crystal sizes ranging from 0.3 – 25µm. Most of these calcined aluminas are also available in continuous and batch ground versions. Our calcined alumina purity levels range from 99.5 - 99.8%, including normal soda (≤0.35%), intermediate soda (≤0.20%), low soda (≤0.10%) and ultra-low soda (≤0.05%) products.

GMA 15 LS

Fraction +45µm = 88%
Loss on Ignition = 0.2%
Na2O Content = 0.12%

A 3500

Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.08%

P 25

Primary Crystal Size = 22µm
Specific Surface Area = 0.15 m2/g
Na2O Content = 0.35%

A 10

Primary Crystal Size = 4.8µm
Specific Surface Area = 0.20 m2/g
Na2O Content = 0.08%

A 14

Primary Crystal Size = 2.1µm
Specific Surface Area = 0.60 m2/g
Na2O Content = 0.03%

A 2

Primary Crystal Size = 3.0µm
Specific Surface Area = 0.40 m2/g
Na2O Content = 0.30%

A 35

Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.11%

HVA

Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.12%

GMA 25 NS

Fraction +45µm = 82%
Loss on Ignition = 0.2%
Na2O Content = 0.40%

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