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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Good Self-sharpness Synthetic Aluminum Oxide Black Emery to Make Sand Belts Sand Paper
1. Product Description of Synthetic Aluminum Oxide Black Emery
Black Aluminum Oxide belongs to the group of electric corundum,it selects the high alumina bauxite and high
iron bauxite and iron oxide as raw materials,then fused in electric furnace at high temperature,then crushed into
different grain size by roller crusher or barmac crusher.
It is widely used for making abrasives mixed with brown fused alumina in certain ratio,whileIt has the stable
chemical composition and stable crystallization,which offers stable performance compared with the second grade
brown fused alumina.
2. Main Technical Index of Synthetic Aluminum Oxide Black Emery
| Quality Level | Main Chemical Index | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| Oridinary | ≥60 | 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 | P12#-P320# |
| Product Standard | GB/T Standard,FEPA Etc. |
3. Main Application of Synthetic Aluminum Oxide Black Emery
Black Aluminum Oxide fine grain is widely used for making various coated products such as emery cloth,sand
paper,then converted into final products for polishing purpose,especially for polishing stainless steel products,
black fused alumina is also used for making sponge blocks.
In addition,Black fused alumina is also used in the following applications of
Bonded abrasives:Resin cutting discs;
Polishing stainless steel tableware;
Sandblasting media for surface decontamination,pipeline cleaning,hull-rust and Jean cloth sandblasting;
Anti-skid wear resistant materials;
Polishing wax;
Refractory materials.
4.Why Black Aluminum Oxide is suitbale for making Coated Abrasives?
Black alumium oxide contains 60-80% alumina,then it has moderate hardness,which will generate little heat in
the treatment surface,it will not easy to burn the surface,so when using the coated abrasives made by black fused
alumina to polish the stainless steel, finally it will achieve the black and bule color,which is very close to the essence
of stainless steel,as well as the better visual effect.
5. Product Pakages of Black Fused Alumina
Ton Bag
25kg Bag+Pallets;
Special packages can be customized.
6. Why Choose us?
China Largest Black Fused Alumina Manufacturer,over 20 years production experience;
Occupies more than 60% Domestic Black Fused Alumina marketing;
The Stable Supplier of Saint-gobain Group and Forsoc Group;