Black aluminum oxide for sandblasting replace Al2O3 85% BFA stable
supply
Black aluminum oxide is obtained from the fusion of high iron
bauxite or high alumina bauxite in electric arc furnace. Its main
component is α-Al2O3, with Al2O3 62%. With moderate hardness, Lower
hardness than Brown aluminum oxide, strong tenacity, low grinding
heat and less prone to surface burning, is an excellent alternative
abrasive.
Commodity: Black Fused Alumina
Production Type: Tilting Furnace, Rolling crushing or Barmac Crushing
| Al2O3 | SiO2 | Fe2O3 | TiO2 |
| 62%min. | 25% max. | 6-12% max. | 2.0%-4.0% |
| Color | Crystal Form | True Specific Gravity | Vickers Hardness |
| Black | Trigonal Crystal | 3.50g/cm3 | 2000kg /mm2 |
| Sizes-Grit | Sizes-Section sand | Micropowder |
| F12#--F280# | 0-1mm 1-3mm 3-5mm 5-8mm | F280#--F1000# |
Grain Composition: GB, FEPA, or as per client's standard |
Package: 25kgs bag+ Ton bags or Pallets or as per customer's
requests.
Delivery: 10-30 days on board according to quantity 25-200mt.
FOB Tianjin, China
The application of BA grit size: F12-F220#
Sandblasting, ideal choice to replace 85% Al2O3 BFA
Black Aluminum Oxide girts can be used as blasting media to
sandblast for Stainless steel, metal products, optical glass,
bamboo and wood products for impurity cleaning, vessel body
de-rusting cleaning, de-burring, surface decontamination , matte
treatment, pre-treatment before coating, pipeline cleaning, Jean
cloth sandblasting, etching art, stress relief etc.
Comparing with Grade A Brown Aluminum oxide (Al2O3 95%), and Grade
B Brown Aluminum oxide (Al2O3 85%), Black aluminum oxide is with
moderate hardness, high toughness and stable performance, can
replace 85 BFA easily, and has stable supply and lower price.
Take 12# for example:
Performance Abrasive | 95% BFA 12# | 85% BFA 12# | 62% BA 10# |
| Al2O3 | 95%min. | 85%min. | 62% min. |
| Hardness | 2100-2300HV | 2000-2150HV | 2000-2100 HV |
| Crushing Type | Barmac | Rolling | Barmac+Rolling |
| Bulk Density | 1.94-1.99g/cm3 | 1.80-1.88g/cm3 | 1.48-1.52g/cm3 |
| Cleanness | Good. No exact test data each batch. Can see it very clean by eyes
easily | Not so good as BFA 95% and BA 60% | Good. Can see the cleaness by eye easily |
| Quality Stability | Premium Products Stable Quality Regular test | Off-grade products Raw materials from different source, test each batch | Premium Products Stable Quality, test every day. Samples and test
reports each batch keeps for 2 years |
| Supply Capability | OK. Sometimes a little short supply, depending on the government
policy | OK. Often short supply limit by government policy | Priority supply 1. YEDA is the biggest BA suppier in China. Supplying to
Saint-gobain worldwide. 2 factories, one in Xinmi, Zhengzhou, another in Linfen, Shanxi.
Annual output of BA grits 30000mt. From Linfen is15000mt. |
Why Choose us?
1) 20 years abrasive industry experiences
2) The biggest black fused alumina producer in China, one of Top 10
corundum manufacturers in China
3) Well-known brand in China Abrasive Industry
Caroline Cui
