Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

Brown aluminum oxide also called Brown Fused Aluminium Oxide,Brown Aluminum Oxide or Brown Corundum is a material produced by fusion process of bauxite(source of aluminium oxide) and other fillings and crushed and screened into grits of different sieving distribution. It is a brown,dense,tough,hard,heat resistant,abrasion resistant material widely used for abrasives,refractory and sandblasting purposes.

After smelting,it's crushed and milled into different grits/sizes which are suitable for above purposes. 0-1mm,1-3mm,3-5mm,5-8mm,100mesh,200mesh,325mesh etc for refractories,castables and crucibles. FEPA F8-F220 for bonded abrasives ceramic and vitrified, also blasting and polishing of different materials and industrial parts, P8-P220 for coated abrasives like sandpaper,sand belts etc. Also finer FEPA grades like F320,F400,F600,F800,F1000 etc for cleaning and water jetting purposes on electronic parts,plastic and metal surfaces etc.

Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

Features of brown aluminum oxide

1) High hardness.

2) High Tension.

3) Good Self-Sharpening.

4) Good Thermal Stability.

5) High Temperature Resistance.

6) Anti-corrosion.

7) Stable Chemical Properties.

Advantages of brown aluminum oxide

Brown fused alumina has Al2O3 content 95% min

1)we passed the certification of ISO9001: 2000

2)Equipped full line of test method.

3)All products will be supplied according to customers’ different requirements.

Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

Main Sizes of brown aluminum oxide

F grits for Bonded Abrasives

F12,F14,F16,F20,F22,F24,F30,F36,F40,F46,F54,F60,F70,F80,F90,F120,F150,F180,F220,F240

P grits for Coated Abrasives

P12,P14,P16,P20,P22,P24,P30,P36,P40,P46,P54,P60,P70,P80,P90,P120,P150,P180,P220,P240

Refractory

0-1mm,1-3mm,3-5mm,5-8mm,8-12mm

Fines for refractory

100 Mesh,200 Mesh,325 Mesh

Packing of brown aluminum oxide

After production, Brown Fused Alumina are packed and shipped to customers. Most common packing are Big Bags of 1 metric ton, 1.2 or 1.3 metric tons. Or packed into 25kg woven plastic bags or 25kg paper bags, and 40 bags on a pallet.

Other Brown Fused Alumina grain sizes can be produced if required.

Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

brown aluminum oxide manufacturing processes

Fusion/Smelting

Calcined Bauxite, Anthracite and Iron Fillings are the main raw materials for producing of Brown Fused Alumina. Shengyu Abrasives choose the best quality calcined bauxite which contains about 88% aluminium oxide, which is the main source of Al2O3 in BFA. These raw materials are mixed together at certain proportion and fused/smelted in electric arc furnace in about 2200℃. Common furnaces are Fixed Furnace or Tilting Furnace(Dumping Furnace). During fusion process, iron contents settle at the bottom of the furnace, carbon contents go to surface of furnace, and aluminium oxide contents in the middle. The raw materials are crystallized and impurities are reduced. This is the most important process for Brown Fused Alumina which decided purity and hardness of it.

Brown aluminum oxide Lumps & Crushing

The fused BFA are cooled down and crushed into big lumps which look brown. This is material of high aluminium oxide content. BFA lumps are then crushed into smaller sizes for further production.

Screening/Sieving

Brown Fused Alumina lumps grits are then put into crushers for further crushing into smaller sizes and screened into grits of different sieving distribution. This is coarse finer grades of good sieving distribution suitable for abrasives and refractory purposes. There are different quality standard such as GB,FEPA,JIS,ANSI standards. After screening, content of Aluminium Oxide(Al2O3) is about 95%, with little content of Iron Oxide(Fe2O3), Titanium Oxide(TiO2) and Silicon Oxide(SiO2) and little magnetic contents. Magnetic contents are then removed relevant equipment, which process is important as for refractory and abrasives applications magnetic contents will harm the finished products. For Al2O3, the finer(smaller) the grit is, the lower the content is.

Washing

Brown Fused Alumina grits are then washed by water or acid to remove dust, magnetic contents and impurities. These unnecessary contents are easy to cause scratch, corrosion, cracks and dark spots on abrasives and refractory products. Washing process also helps get harder and purer materials which have better performance and better for recycling.

Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

Brown aluminum oxide Applications

1) Abrasive: Produce ceramic gring wheel, resinoid gringding wheel, Grinding stone, Gringing block, sand paper, sand cloth, sand belt, Polish wax, abrasive paste, coating etc...

2) Refractory material: Mainly used for abrasion and high temperature resiatant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy, various industrial stoves, electric furnace etc...

3) Sandblasting abrasive: Mainly used for various material workpieces to decontaminate, derusting, prevent corrosion, remove oxide skin etc...

4) Abrasion resistance ground: Mainly used for non-slip of airport and road, chenmical factory Board paving.

5) Precision casting: Investment casting technics of stainless steel and aluminium casting in coating.

Abrasive and Refractory BFA/Brown/Aluminum/Oxide/Brown Fused Alumina

Brown aluminum oxide Shipping

1. FEDEX/DHL/UPS/TNT for samples.

2. By Sea for batch goods.

3. Customers specifying freight forwarders or negotiable shipping methods!

4. Delivery Time:3 days for common shape samples;15 days for special shape samples.Within 30 days for batch goods.

Brown aluminum oxide Payment Terms

1. Payment: T/T, Western Union,LC; Usually 30% deposits,70% balance before delivery or negotiations to solve.

2. MOQ: Usually 1Tons,Customers can order certain PCS for corundum brick.

3. Quality Warranty: 1 years,

we could offer you the best quality abrasive grit and powder as following:

1.White aluminum oxide

2.Brown fused alumina

3.Sub white fused alumina

4.Silicon carbide green

5.Silicon carbide black

5.Pink fused alumina

At present, we could offer white alumium oxide for 3500MT per month,brown fused alumina for 6000MT per month,sub white fused alumina for 2100MT per month,silicon carbide black 4000MT per month,silicon carbide green3200MT per month,pink fused aumina 2000MT per month.

The grit and powder mainly including FEPA standard,JIS standard,China GB standard and refractory grade powder.

As a professional china abrasive manufacturer,we specialize in producing and offering abrasive, the products has been exported to many countries or districts such as Japan,South Korea,Taiwan,India,Bangladesh,Malaysia,Viet Nam,Indonesia,Germany,Italy,Portugal,Spain,UK,Turkey,France,Poland,Russia,Czech Republic,Canada,Columbia,and the United States of America etc.