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Feature
BFA has good crystallization, well toughness, low linear expansion coefficient, corrosion resistance.
Brown fused alumina consists almost entirely of aluminum oxide and is almost iron-free. Brown fused alumina is less pure than white fused alumina. The special composition of this angular mineral makes it extremely stable. It is also both hard and tough. Brown fused alumina is primarily used as a surface finishing materials like sand blasting, polishing, grinding, and coating. It belongs to the group of fused alumina.
Typical Physical Properties
Hardness: 9 mohs
Grain shape: angular
Melting point: approx. 2000°C
Toughness: 50 (ANSI-B74.8 1987)
Specific gravity: approx. 3.8 - 4.1 g/cm3
Bulk density: approx. 1.5 - 2.1 g/cm3
Crystal structure: alpha alumina macro crystals from trigonal class, hexagonal system
Products Pictures:
Plant Warehouse:Production Process and QC:
Brown Fused Alumina for Abrasives, the 1st Grade
| No. | Grit | Technical Data (%) | |||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | CaO | MgO | ||
| 1 | 36# | 96.10 | 0.08 | 0.73 | 2.18 | 0.39 | 0.29 |
| 2 | 46# | 96.51 | 0.07 | 0.61 | 2.06 | 0.35 | 0.29 |
| 3 | 100# | 96.40 | 0.08 | 0.68 | 2.08 | 0.38 | 0.29 |
| 4 | 150# | 96.00 | 0.07 | 0.66 | 2.28 | 0.36 | 0.30 |
| Remark: Test date: 16th-Jan.-2024 | |||||||
Brown Fused Alumina /Brown Aluminum Oxide for Abrasives, Sand Blasting, Polishing, Grinding Wheels
| Specification | Chemical composition(%) | Magnetic material ≤ | |||||
| Range | Al2O3(≥) | Fe2O3(≤) | SiO2≤ | TiO2≤ | |||
| For abrasive | F grit | 4#-80# | 95.0 | 0.3 | 1.2 | 3.0 | 0.05 |
| 90#-150# | 95.0 | 0.03 | |||||
| 180#-240# | 95.0 | 0.02 | |||||
| P grit | 8#-80# | 95.0 | 0.2 | 1.2 | 3.0 | 0.05 | |
| 100#-150# | 95.0 | 0.03 | |||||
| 180#-220# | 95.0 | 0.3 | 1.2 | 3.0 | 0.02 | ||
| Micro Powder | W0.5-W63 | 92.5 | 0.5 | 1.8 | 4.0 | ||
| F320-F1500 | |||||||
| For refractory | Size for Sand | 0-1mm | 95.5 | 0.3 | 1.5 (1.0 from Tilting Furnace) | 3.0 | |
| 1-3mm | |||||||
| 3-5mm | |||||||
| 5-8mm | |||||||
| 8-12mm | |||||||
| 0-3mm | 95.0 | 0.3 | 1.5 | 3.0 | |||
| 0-5mm | |||||||
| 0-10mm | |||||||
| 0-25mm | |||||||
| Fine powder | 140F | 94.5 | 0.5 | 1.5 | 3.5 | ||
| 200F | |||||||
| 325F | |||||||
1. 1 MT Big Bag
2. 25kg Plastic Bag + Pallet + Wrapped with PE film
3. 25kg Paper Bag + Pallet +Wrapped with PE film
4. 25kg Paper Bag + Big Bag + Pallet
5. 25kg Plastic Bag + 1.35 MT Bag Bag
Or as per customer's requirement
1. 1 MT Big Bag2. 25kg Plastic Bag + Pallet + Wrapped with PE film
3. 25kg Paper Bag + Pallet +Wrapped with PE film
4. 25kg Paper Bag + Big Bag + Pallet
5. 25kg Plastic Bag + 1.35 MT Bag Bag
We are an owner of bauxite ore and refractory manufacturer in China who processes whole production lines from bauxite calcining to BFA block crushing & Screening with an 50,000TPA and accredited to the standards ISO 9001:2008 Quality, ISO 14001:2004 Environment as well as OHSAS 18001:2007 Health and Safety.
This advantage enable us to provide products not only high-class aluminum oxide sand, but also premium corundum along with meeting established ANSI, FEPA, JIS and individual customer specifications.
We have various equipment including 7 smelting furnace, 4 grinding miller, 5 ball grinder, a central laboratory, an OMEC particle size analyzer, a Slap sieving machine, a microscope and other high-tech instruments. Our products, with high cleanliness, strong adaptability and stable performance, are exported to Europe, North and South America, Australia, Japan, Korea, Taiwan, Thailand, Singapore, Malaysia and other more than 30 regions and countries, enjoying a good reputation.
Germany Exhibition:Plant Overview:
1. We are a manufacturer, which can control the cost easier than trade companies also can give you an answer more quickly.
2. As a manufacturer, we know much in technique and can give you more support in technique problems.
3. Professional and experienced service team, specialized in refractory production for 20 years.
4. Our products are complete in specifications of various sizes.
5. We enjoy a good reputation in the customers in domestic and overseas markets.
6. Large production capacity, short lead time of products.
7. 24*7 online service.
Brown Fused Alumina(FAQ)
Form and shape of the abrasive:
This decision is made by determining how the abrasive will be used by the individual. Abrasives are sold in forms such as sheets, large/small discs, belts, and large/small rolls. Selecting the right form is determined by whether the abrasive will be used for hand. sanding, applied to a large disc
What is a mesh vs. Grit size?
If you take a (1) inch space and add wires to it, the number of openings within the 1″ space is defined as mesh. For example, if the 1″ space has ten openings for particles to fall through, then that sieve would be called a 10 mesh sieve. Typical sieve
What is the hardness?
Hardness is rated from A-Z with 'A' being the weakest bond and 'Z' being the strongest. A weak bond is preferred for grinding harder materials while a stronger bond is desired for softer materials. A typical weak bond for steel would be in the 'F, G or H' range. A
Can you customized quality, size, package according to customer?
Yes, of course. The OEM is available. We will do the creation in your requirement and make your image come true.
How about your delivery time?
Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends. on the items and the quantity of your order.
What is a silane coating used for?
When functionalizing fused alumina, a very thin layer of a silane adsorption group is applied to the fused alumina particles. This organic surface coating has the effect of better embedding and increased scratch resistance in a melamine resin matrix.
