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Calcined α- Alumina

Calcined α- Alumina

Calcined α- Alumina


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

K1 99.0 0.10 0.03 0.08 95 3.95 40-60
K2 99.0 0.10 0.03 0.08 95 3.95 40-60
K3 99.0 0.10 0.03 0.08 95 3.95 40-60
Superine powder K1-A 99.0 0.10 0.03 0.08 95 3.95 2-4
K2-A 99.0 0.10 0.03 0.08 95 3.95 3-5
K3-A 99.0 0.10 0.03 0.08 95 3.95 3-5

Calcined α- Alumina

(SERIES OF NON-MINERALIZER AND LOW SODIUM CONTENT)

PROPERTY:

This product presents in a white powder or granulated sugar shape,the crystal structure is stable. It is featured with low sodium oxide content,high chemistry purity. It can not dissolve in the water and difficult to dissolve in the acid and alkali solution. This product has good stable performance,easy to be grinded and sintered.

MAIN USEAGE:

This product is the ideal raw material of the high temperature fire-proof material,the pouring casting,the electric porcelaneous component,the spark plug,the high alumina ceramic,the wear resistant ceramic and electronic substrate product. Besides,it is widely used in the grinding and the polishing profession.

SPECIFICATION:

Category

Index

Model

Al2O3≥ (%) Impurities ≤(%) α-Al2O3≥(%) Specific gravity≥(g/cm3) D50 (micron)
SiO2 Fe2O3 NaO2

Original powder

FK

99.9

0.08

0.03

0.05

95

3.90

20-60

FK0

99.9

0.08

0.03

0.05

96

3.95

20-60

FK1

99.9

0.08

0.03

0.05

97

3.96

20-60

Superine powder FK-P

99.9

0.08

0.03

0.05

95

3.90

1.0-2.0

FK-A

99.9

0.08

0.03

0.05

95

3.90

1.0-2.0

FK-B

99.9

0.08

0.03

0.05

95

3.90

0.3-0.6

FK0-A

99.9

0.08

0.03

0.05

96

3.95

 

FK1-A

99.9

0.08

0.03

0.05

97

3.95

 

Calcined α- Alumina
(COMMON HIGH TEMPERATURE SERIES)

PROPERTY:

This product presents in white powder or refined sand,it has good sintering activity. It can not be dissolved in water and be difficult dissolved in acid,alkali solution. The original particle size is smaller than 1 micron.

MAIN USEAGE:

It can be used in the polishing of different alumina products(mainly used in middle,fine polishing). It is also widely used in high-class aluminum refractory material,unshaped refractory materials,high aluminum ceramic product and advanced coating,etc.

SPECIFICAITON:

Category

Index

Model

Al2O3≥ (%)

Impurities ≤(%)

α-Al2O3≥(%)

Specific gravity

≥(g/cm3)

D50 (micron)

SiO2

Fe2O3

NaO2

Original powder

CH

99.0

0.10

0.03

0.30

91

3.90

40-60

CH0

99.0

0.10

0.03

0.30

93

3.93

40-60

CH1

99.0

0.10

0.03

0.30

94

3.95

40-60

Superine powder

CH-P

99.0

0.10

0.03

0.30

91

3.90

1.0-2.0

CH-3252

99.0

0.10

0.03

0.30

91

3.90

 

CH-A

99.0

0.10

0.03

0.30

91

3.90

0.5-1.0

CH-B

99.0

0.10

0.03

0.30

91

3.90

0.2-0.5

CH0-P

99.0

0.10

0.03

0.30

93

3.93

 

CH0-A

99.0

0.10

0.03

0.30

93

3.93

 

CH0-B

99.0

0.10

0.03

0.30

93

3.93

 

CH1-P

99.0

0.10

0.03

0.30

94

3.95

 

CH1-A

99.0

0.10

0.03

0.30

94

3.95

1.0-3.0

CH1-B

99.0

0.10

0.03

0.30

94

3.95

0.5-1.0