4N High-purity Alumina


4N High-purity Alumina


Features:


■ Appearance: White crystalline powder or in fine sand shape with uniform particle size distribution.


■ With low water containment, the products shows stable chemical features and crystalline phase. Insoluble in acid and alkali, it has great sintering activity.


■ Applications: High purity alumina of different grades is made out of different processes. It can be used in LED sapphire crystal raw material, tricolor phosphor, long afterglow phosphor, high pressure sodium lamp tube, glass additive, electronic ceramics, catalyst carrier and other fields. Due to its better physical and chemical properties, it can be used satisfactorily by corresponding customers.


Physical and chemical index of 4N high-purity Hydroxide Alumina


Product name

Al2O3

(%)

Si

ppm

Fe

ppm

Na

ppm

Ca

ppm

Mg

ppm

Cu

ppm

Cr

ppm

Ti

ppm

Particle size

D50(um)

A-HP-9999γ

99.995

20

3

40

<3

<1

<1

<2

<1

40±5

Product name

Al2O3

(%)

Si

ppm

Fe

ppm

Na

ppm

Ca

ppm

Mg

ppm

Cu

ppm

Cr

ppm

Ti

ppm

Particle size

D50(um)

A-HP-9999γ

99.995

15

2

20

<3

<1

<1

<2

<1

2±0.3