CALCINED ALUMINA FOR POLISHING


The crystal morphology of the product is a round piece and particle distribution is narrow, which both are under strictly controlled. Moreover, it is not easy to be scratched and is suitable for fine polishing. It is with high hardness value (mohs value is 9), good suspension stability and excellent polishing performance.


Application: It can be used as skeletal material for polishing paste and polishing solution. It also can be used for polishing of materials, such as semiconductor materials like monocrystalline silicon piece; polishing of optical glass like kinescope glass shell, computer hard disc, optical lens; polishing of finishing materials and superior stones and metals.

Specifications:


Grade

Al2O3 %

SiO2 %

Fe2O3

%

Na2O %

Density (g/cm3)

Particle size (um)

Usage

ALP-01

≥ 99.2 

≤ 0.2

≤ 0.05

≤ 0.4

≥ 3.90

0.1-0.3

Super fine polishing

ALP-02

≥ 99.2 

≤ 0.2

≤ 0.05

≤ 0.3

≥ 3.92

1-2

Fine polishing

ALP-03

≥ 99.2 

≤ 0.2

≤ 0.05

≤ 0.3

≥ 3.94

2-3

Semi polishing

ALP-04

≥ 99.5

≤ 0.2

≤ 0.05

≤ 0.1

≥ 3.96

3-5

Rough polishing

If you have any question, please contact us