Brown Fused Alumina, it is a product manufactured by gradual melting reduction of calcined bauxite in an electric arc furnace at high temperature (approximately 2000 degrees Celsius). Its chemical composition consists mainly of Al2O3 (94,5-97%) and vestigial amounts of TiO2, SiO2, Fe2O3, CaO and MgO.
Brown Fused Alumina is characterized by good toughness, high mechanical resistance and hardness (9 in Mohs scale). The micro hardness of the material reaches about 1900kG/mm2. Specific gravity (density) equals 3,90+/-0,05 g/cm3. Bulk density depending on size equals 1,68-1,95 g/cm3. It has relatively high thermal conductivity and low thermal expansion. As regards electricity it is an insulator.
▼Usage
grinding media, sandblasting media; surface cleaning, grit blasting, lapping, polishing, grinding, sandblasting, etching, wet and dry blasting, mineral skin abrasion materials, metal finishing & surface preparation, refractory material, ceramics, coatings ,bonded & coated abrasives
▼Chemical Analysis
|
Purpose |
Specifications |
Chemical Composition (%) |
Magnetic Material Content (%) |
||||
|
For Abrasives |
Al2O3 |
Fe2O3 |
SiO2 |
TiO2 |
|||
|
F |
6-80 |
≥95.0 |
≤0.30 |
≤1.50 |
≤3.0 |
≤0.05 |
|
|
90-150 |
≥94.5 |
≤0.30 |
≤1.50 |
≤3.0 |
≤0.03 |
||
|
180-220 |
≥94.0 |
≤0.30 |
≤1.50 |
≤3.5 |
≤0.02 |
||
|
240-1200 |
≥93.5 |
≤0.50 |
≤1.80 |
≤4.0 |
— |
||
|
Refractory |
Section Sand |
0-1mm 1-3mm 3-5mm 5-8mm 8-10mm 10-16mm |
≥95.0 |
≤0.30 |
≤1.50 |
≤3.0 |
— |
|
Fine Powder |
-180mesh -220mesh -240mesh -320mesh |
≥93.5 |
≤0.50 |
≤1.50 |
≤3.5 |
— |
|
▼Physical properties
|
Color |
True Density |
Mohs Hardness |
Melting Temperature |
Crystal System |
Refractory Temperature |
|
Brown |
3.90g/cm3 |
9.0 |
2050℃ |
Alpha-alumina trigonal system |
1900℃ |
All data based upon Runlong Enterprise standard test methods. We could supply grit size according to FEPA, JIS, ANSI, GB & P Standard.
High purity brown fused alumina for making abrasive tools and refractory raw material with unit price[USD580~700/Tons FOB Tianjin] from China manufacturer.
▼Shipping Package
|
woven bags |
paper bags |
jumbo bags |
jumbo bags |
pvc bag+pallet |
paper bag+pallet |
|
25kg net |
25kg net |
1000kg |
1500kg |
1000kg |
1000kg |
Other package also could be supplied as required.
▼Our Advantages:
a. Assure the high quality of products.
b. Equipped full line of test method. The laboratory is certified by government Inspection Bureau, that assures its quality stability.
c. All products will be supplied according to customers different requirements.
d. One-stop service
e. A grade products with high purity
f. Professional abrasives manufacturer since 1999
g. Production capacity:1000-1500 metric ton/month
▼Payment:
1).Our first choice is T/T. For a large order 40% T/T in advance is earnest money, the rest to be paid in 7-10 days after getting B/L copy. For a small order,100% T/T in advance.
2).Second choice is L/C. We can accept irrevocable L/C at sight. For a large order 40%T/T, 60%L/C. We couldn’t accept L/C for a small order. The best way of payment we advise is T/T, because L/C is very complicated and a lot of extra fee to give the bank.
3).The others: West Union, Paypal.
▼After Sales Service:
1).We are very glad that customer give us some suggestion for price and products.
2).If any question, please let us know it by E-mail or Telephone at the first time. We can deal with them for you in time.
▼Factory Visit:
1).Welcome any customer to visit our factory directly
2).If customer have any scheduling in China, please let us know. We would like to help you book the hotel and pick up you from airport or railway station.
