1. high purity
2. crystallization is good.
3. strong liquidity
4. low coefficient of linear expansion
5. corrosion resistance
6. high temperature resistance
7. high strength
Production process
Brown fused alumina is made of bauxite/anthracite coal, and melted in electric-arc furnace of high temperature more than 2000 degrees.
Application
1. Sand blasting for aluminum profile/Copper material/Glass/Washed jeans/precise mould
2. Grinding for kinescope/glass/mono crystalline silicon/ lens/jade ware
3. Abrasion-proof material for expressway/airstrip/dock/parking lot/stadium
4. Bonded abrasives and Coated abrasives
5. Surface preparation and finishing
6. Thermal Spraying(Plasma Spraying)
7. Super Refractory, Ceramics and Tiles
8. Lapping &Micro-blasting applications.
Main Physical Properties
|
COLOR |
BROWN |
|
MOSH HARDNESS |
≥8.9 |
|
MELTING POINT |
2250 |
|
THE MAXIMUM TEMPERATURE |
1900 |
|
SPECIFIC GRAVITY |
3.95 |
|
BULK DENSITY |
1.53-1.99 |
|
REAL DENSITY |
≥3.90 |
Chemical Composition
|
|
Sectional sands |
Fines |
Grains |
Micro powder |
|
Al2O3 |
≥95% |
≤92% |
≤95% |
≤92% |
|
SiO2 |
≥1.5% |
≤2% |
≤1.5% |
≤2% |
|
Fe2O3 |
≥0.5% |
≤0.55% |
≤0.5% |
≤2% |
|
TiO2 |
≥3% |
≤3.3% |
≤3% |
≤4% |
Size
Sectional sands
0-1mm 1-3mm 3-5mm 5-8mm
Fines
200#-0 320/325-0
Grains
（F/P sand） 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#
Micro powder
W---W63 W50 W40 W28 W20 W14 W10 W7
GB---240# 280# 320# 400# 500# 600# 800# 1000#
JIS--- #240 #280 #320 #360 #400 #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500
FEPA---F23 F240 F280 F320 F360 F400 F500 F600 F800
Detergent powder $ 70.00
ZnSe zinc seleni $ 0.00
1,1,3,3-Tetrame $ 1.00
1,3-Bis(trifluo $ 1.00
120 Elbow 45° $ 1.00
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