Min 95% Barmac Brown Fused Alumina BFA For Bonded Abrasives
Brown fused aluumina is made of high-quality bauxite as raw material, anthracite and iron filings. It is made by arc smelting at 2000°C or higher temperature. It is crushed and plasticized by self-grinding machine, magnetically selected to remove iron, sieved into various sizes, and its texture is dense and hard. High, spherical pellets, suitable for the production of ceramic, high-resistance abrasive resin and grinding, polishing, sandblasting, precision casting, etc., can also be used to manufacture high-grade refractories.
The brown aluminum oxide abrasive has the characteristics of high purity, good crystallization, strong fluidity, low coefficient of linear expansion, and corrosion resistance. The practice of dozens of fire-proof production companies has verified that this product has the characteristics of no explosion, no chalking, and no cracking in the application process. In particular, it is much higher than the cost-effectiveness of traditional brown corundum, making it the best aggregate and filler for fused alumina refractories
By Al2O3:
- 95% Al2O3 Grade A Brown aluminum oxide
- 92% Al2O3 Offset A Brown aluminum oxide
- 85% Al2O3 Grade B Brown aluminum oxide
By application: By smelting type: By crushing type:
- F sand for Bonded Abrasives Tilting furnace Barmac
- P sand for coated Abrasives Fixed Furnace Rolling
- Middle temperature calcined Brown aluminum oxide,
- High temperature calcined Brown aluminum oxide,
- Coated Brown aluminum oxide
- High temperature calcined & coated Brown aluminum oxide (AHMCF)
| Purpose | Specification | Chemical composition(%) | Magnetic material ≤ | ||||
| Al2O3(≥) | Fe2O3(≤) | SiO2≤ | TiO2≤ | ||||
| abrasive | F grit | 4#-80# | 95.0 | 0.3 | 1.5 | 3.0 | 0.05 |
| 90#-150# | 94.0 | 0.03 | |||||
| 180#-240# | 93.0 | 3.5 | 0.02 | ||||
| P grit | 8#-80# | 95.0 | 0.2 | 1.2 | 3.0 | 0.05 | |
| 100#-150# | 94.0 | 0.03 | |||||
| 180#-220# | 93.0 | 0.3 | 1.5 | 3.5 | 0.02 | ||
| Micro Powder | W0.5-W63 F320-F1500 | 92.5 | 0.5 | 1.8 | 4.0 | ||
| refractory | Size for Sand | 0-1mm 1-3mm 3-5mm 5-8mm 8-12mm | 95.5 | 0.3 | 1.5 (1.0 Tilting Furnace) | 3.0 | |
| 0-3mm 0-5mm 0-10mm 0-25mm | 95.0 | 0.3 | 1.5 | 3.0 | |||
| Fine powder | 100F 200F 325F | 94.5 | 0.5 | 1.5 | 3.5 | ||
GRADE B
| Chemical Analysis(%) | Physical Properties | ||
| Al2O3 | 70-85% | Specific Gravity | 3.50-3.90g/cm3 |
| Fe2O3 | 8-15% | Bulk density | 1.30-1.90g/cm3 |
| SiO2 | 2-5% | Mohs Hardness | 7.0-9.0 |
| TiO2 | 3-5% | ||
C GRADE
| Chemical Analysis(%) | Physical Properties | ||
| Al2O3 | 50-65% | Specific Gravity | 3.50-3.90g/cm3 |
| Fe2O3 | 12-20% | Bulk density | 1.30-1.90g/cm3 |
| SiO2 | 15-25% | Mohs Hardness | 7.0-9.0 |
| TiO2 | 4-6% | / | / |
| Item | Index |
| Colour | Dark brown(Deep blue after calcination) |
| Crystal form | Trigonal crystal |
| Hardness(MO) | ≥9.0 |
| Melting point(°c) | 2250 |
| Maximum service temperature°c | 1900 |
| True density(g/cm3) | ≥3.9 |
| Coefficient of linear expansion | 7-9 |
Applications for refractory :
Unshaped refractory, stereotypes refractory, castable, ladle refractory, blast furnace hot air furnace series combination brick, high alumina brick, carbon refractory, mullite brick, gun mud, Bulk materials, ceramic bricks, composite bricks, corundum products, charge, pound, refractory raw materials, abrasive raw materials, used in steel mills, foundries, glass factory high-end refractories.
Applications for abrasives:
1.For the raw material of Unshaped and shaped refractory
2.For Friction products and abrasion resistance ground,
3.For Resin or ceramic bonded abrasive,such as grinding wheels,cutting off wheels.
4.For Grinding and polishing ,such as gringing stone, Grinding block, flap disc.
5.For Coated abrasives,such as abrasive paper,abrasive cloth,abrasive belt,Guze.
6.For Producing mold of precision casting and Grinding, lapping and polishing media.
7.For Shot-blasting, such as for sandblasing oil piple , ship and tanks with non magnetic.
FAQ:Question 1: Are you a manufacturer or trader ?
Yeah, We are the manufacturer of BFA, WFA. Also,we had good business relationship with others abrasive media & refractory raw materials manufacturer . more over we have QC department which make strict inspection on goods quality, packing, so we can provide a stable and quick delivery of all the products, All the producers we cooperate with have consistent quality and competitive prices.
Question 2: Do you have stock of Abrasive media or Refractory materials ?
Yeah, we have many stock .Just let us know the products you'd like or interested, then we can sent you the full information of the stock at once.
Question 3: Can i get sample in free , how long is the time?
Yes, certainly. We will provide the sample is in free below 1 kgs for free, and the freight cost for free in 1kg. We could arrange the existing samples express delivery immediately. For any special samples requirement, it need max 7 days finished. Usually we send samples by TNT ,FEDEX, DHL, or UPS. It takes 4-7days been to your hand.
Question 4: 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 ur image come true.
Question 5:Can Customer ask for the third party certification?
Yes, No problem, but Custome. resposiable for the charge
Question 6:Warranty
Firstly, We make sure the quality before the goods to be packed, if clients get the item with Substandard products, We have warranty for our clients,we will ship out the new replacements.
Question 7:Sample cost is refundable or not?
Yes, Sample cost below 5 kgs can be refunded when bulk order confirmed,But freight cost for more than 1kg don't be refunded.
Question 8:What's payment terms ?
Bank T/T, L/C at sight, Westunion.
Question 9:What's lead time for bulk order?
1)for 5~25 tons, it takes around 10~15days.
2)For 50~200 tons,20-40days
We will try to deliver it with the promise of quality guarantee as soon as possible
Question 11:Which method of transport would be better?
Generally, we suggest to make shipment by sea which costs less. We also can follow other transportation method you asked.
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…
