Zhengzhou Zhengtong Abrasive Import&Export Co.,Ltd
Zhengzhou Zhengtong Abrasive Import&Export Co., Ltd is exporter of blasting media ceramic beads, brown fused alumina, black fused alumina, white fused alumina & grinding media zirconia beads,
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Aluminum Oxide Blasting Media Black Fused Alumina F16# F20# for Flour Mill Stones or Abrasive Stones
1. Product Description of Black Aluminum Oxide
Black Fused alumina also belongs to the family of electronic corundum,it selects the high alumina bauxite
or high ferric oxide bauxite as main raw material,then fused in high temperature,finally crushed into different size.
2. Main Technical Data of Black Aluminum Oxide
| Commodity | Quality Grade | Main Chemical Index | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||
| Black Fused Alumina | Oridinary | ≥62 | 6-12% | ≤25% | 2-4% |
| Top Quality | ≥80 | 4-8% | ≤10% | 2-4% | |
| Main Physical Index | |
| Color | Black |
| Crystral Structure | Trigonal |
| Mohs Hardness | 8.0-9.0 |
| Vicker Hardness | 2000-2200kg/mm2 |
| Specific Gravity | ≥3.5g/cm3 |
| Bulk Density | 1.68-1.22 g/cm3 |
| Grit Size(Oridinary) | F12-F240#,F260-F400# |
| #325-0,#500-0 ,#1000-0 | |
| 0-1mm,1-3mm,3-5mm,5-8mm | |
| Grit Size(Top Quality) | F12-F240 F280-F1000 |
| Product Standards | GB/T Standard,FEPA Standard Special products can be customized |
3. Main Applications
Bonded Abrasives:resin cutting discs,ceramic grinding wheels
Coated Abrasives: sandpaper,sanding belts
Polishing Stainless steel tablewares;
Anti-skip wear-resistance roads;
Blasting Media
Refractory materials
Brake Pads.
4. Why black aluminum oxide is widely used in making resin cutting discs and abrasive stones?
Black aluminum oxide has moderate hardness,good self-sharpness,there is lower heat generated in
cutting process.
People make full use of that aboved advantages, adding 30-50% black aluminum oxide mixed with
brown aluminum oxide or calcined brown aluminum oxide to make resin cutting discs,then the finished
products achieves higher cutting performance, better cut finish, slight discoloration, and more
stable operation.
Meanwhile,the production cost is nearly 1/2 lower than the one made by the original formula.That is the
reason why black fused alumina is widely used in making resin cutting discs.
5. Why Choose us?
Professional manufacturers of black aluminum oxide,annual output over 30000mts. Two plants locatesd
in Henan and Shanxi,China.
Professional sales and technical staffs,providing 7&24 hours quick and professional services;
Strict quality control system,products can be traced from the raw materia to the final products.
Each shipment will be sampled again before delivery even for one small sample.
Stable quality and more competitive price/performamce ratio.