Basic Info.
Product Description
Size 0-25mm Brown Fused Alumina / Aluminum Oxide Al2O3 95.5% Min
Brown aluminum oxide, also called Brown Fused Alumina crude, brown corundum, artificial corundum, BFA, etc, is made by melting process and reducing in electric furnace over 2200°C with three raw materials of bauxite, anthracite and iron chip. Then made into different grain size through cooling crystallization, sort, crush, magnetic separation, screen size, blow cleaning etc.. The crude blocks 0-25mm is usually export to the United States to be processed to abrasive grits F12#-F220# or refractory sand 0-1mm, 1-3mm, 3-5mm, 5-8mm etc...
| Grit Size | Chemical composition | |||||
| AL2O3 | TiO2 | Fe2O3 | SiO2 | CaO | ||
| Refractories | 0-1mm | 95% Min. | 2.0-2.8 | 0.3% Max. | 0.6-1.0 | - |
| 1-3mm | - | |||||
| 3-5mm | - | |||||
| 5-8mm | - | |||||
| 200 Mesh | 94-95 | - | - | - | - | |
| 325 Mesh | ||||||
| Abrasives/ Sandblasting | F12-F80 (P30-P80) | 95-96.5 | 1.8-3 | 0.3 | 0.8-1.2 | |
| F90-F150 (P100-P150) | 94.5-95.5 | |||||
| F180-F220 (P180-P220) | 94-95 | |||||
Supply Capacity
Brown Fused Alumina Applications :
Brown Aluminum oxide section sand 0-1mm, 1-3mm, 3-5mm, 5-8mm is applicable for
-
Refractories, castables, refractory bricks
Brown aluminum oxide is of high purity, good crystallization, strong fluidity, low coefficient of linear expansion, high temperature resistance and corrosion resistance.
Widely used in the manufacture of advanced refractory materials:
- Castables,
- Refractory bricks,
- Ramming materials,
- Skateboards,
- Steel sliding nozzles,
- Ladle,
- Furnace linings,
- Smelting rare metals,
- Special alloys,
- Ceramics,
- Linings for ironmaking blast furnaces ( Wall and tube),
- Physicochemical utensils,
- Spark plugs,
- Heat-resistant anti-oxidation coating.
In the application process, it has the characteristics of no explosion, no powdering and no cracking.
What Is Difference Between Tilting Furnace Melted BFA & Fixing Furnace Melted BFA ?
Ball Milling & Barmac Process?
1. Tilting furnace process affects SiO2, SiO2 <1% by Tilting furnace, SiO2 <1.5% is by fixed furnace.
2. Barmac affects the density, the grain shape is rounder & the density is greater than ball milling
3. The Tilting furnace made BFA has high Al2O3 content
4. The corundum has good toughness & more suitable for abrasive products by dumping furnace process
The difference between F-grit & P-grit Abrasive grains:
F-grit is more suitable for bonded abrasive tools.
P-grit is more suitable for coated abrasive tools. It is with a closer tolerance size distribution, lower density, and better self-sharpening ability than non-P-grit abrasives, which means that they offer a more consistent surface finish.
Grit size: 16#, 20#, 24#, 30#, 36#, 46#, 54#, 60#, 80#, 100#, 120#, 150#, 180#, 220#
Micropowder: 240#, 280#, 320#, 360#, 400#, 500#, 600#, 800#, 1000#, 1200#, 1500#, 2000#
Refractory Grit size:1-0mm, 3-1mm, 5-3mm, 5-8mm, -200mesh, -240mesh, -320mesh.
Packaging & Shipping
1. 1 ton bags in container, 25 MT/20'FCL.
2. 25kg bags in container, 25 MT/20'FCL
3. 25kg bags in ton bags, then in container, 25 MT/20'FCL
4. as the customer' request.
Why Choose us?
1) 20 years abrasive industry experiences
2) Direct Factory supply & Fixed abrasive sources
3) On-site inspection in factory for each shipment
4) Samples tests each lot in Zhengzhou Research Institute for Abrasives& Grinding Co., Ltd
Our Brown fused alumina grit has been exported to Japan, India, Israel, Russia, Poland etc.
Pls send me email to get Brown fused alumina datasheet /samples and quotation…
