brown fused alumina for sandpaper

1 AL2O3 content:95.56% 2 grit size:P12-P220 3 for coated abrasive 4 passed ISO 9001:2000 5 good service

                                                                                        Brown fused alumina

1 Description

Brown Aluminium Oxide is fused in an electrical arc furnace at high temperature (approximately 2000 degrees Celsius) from a mixture of bauxite ,coal, iron scrap. Its appearance is brown colour.

It is characterized by great toughness, high mechanical resistance and high hardness (9 in Mohs scale). The micro hardness of the material reaches about 1900kG/mm2.

Specific gravity (density) equals 3.90+/-0.05cm3. Bulk density depending on size equals 1.52-1.87g/cm3. It has relatively high thermal conductivity and low thermal expansion.

It is the perfect material specifically manufactured to be used for general abrasive applications in bonded and coated abrasive tools, lapping and polishing industry. It is also used as a raw material in the manufacture of high alumina refractory.

2 Application

a. Bonded abrasive products.

b  coated abrasive products such as sand paper, sand cloth, roll, sand belt, flap wheel,etc..

c   Vitrified bonded grinding wheels and resin bonded grinding wheels.

d  Pressure blasting, surface finish, sandblasting

e  Various polishing application such as glass carving, rust removing, jean cloth grinding.

f  Wear-resistant and fire-proof products.

g  Friction products and abrasion resistance ground

h  Producing mold of precision casting

3 Grit Size Available (F series for bonded abrasive and sandblasting, P series for coated abrasive)

F series:   F4, F8, F10, F12, F14, F16, F22, F24, F30, F36, F40, F46, F54, F60, F70, F80, F90, F100, F120, F150, F180, F220, F230, F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200,F1500,F2000

P series:   P8, P10, P12, P16, P24, P30, P36, P40, P50, P60, P80, P100, P120, P150, P180, P220, P240, P280, P320, P360, P400, P500, P600, P800, P1000, P1200, P1500, P2000, P2500, P3000

4 Packing way selection

a. In 25kg plastic woven bags

b. In 1000kg big bag.

c. 40 x 25kg plastic woven bags in one big bag.

d. 40 x 25kg plastic woven bags on pallet

e. 40 x 25kg paper bags on pallet.

f. According to client’s special requirement

                                                                                                Brown Fused Alumina AP-17C

It is made from the brown aluminum second grade sand.., the grain shape is very sharp, the strip and needle shape are well kicked out of the grains. With the concentrated size distribution and dust collected by well water washing, It can be used for producing all kinds of Coated Abrasive products, such as sand paper, cloth, rolls, belts, etc. Our product is produced strictly based on the FEPA standard.we call it brown aluminum second grade P sand.

Typical Chemical Analysis   Al2O3 Fe2O3 95.56% 0.08%

Physical Properties   Color Deep dark brown Shape Very Sharp Crystal Form Alpha-alumina trigonal system True Specific Gravity 3.85 g/cm3 Hardness 8.0 Mohs scale Melting Temperature About 2050 °C Magnetic Material 0.1000%

Bulk Density Test Value (g/cm3)   Grit No P12 P16 P20 P24 P30 P36 P40 P50 B.D 1.83 1.79 1.76 1.72 1.69 1.67 1.65 1.63 Grit No P60 P80 P100 P120 P150 P180 P220   B.D 1.59 1.56 1.54 1.51 1.49 1.48 1.46

Grit Size Available (P)   12 16 20 24 30 36 40 50 60 80 100 120 150 180 220

Particle Size Distribution (PSD)   According to FEPA – Standard 43-1984 R 1993

brown fused alumina for sandpaper