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Moderate Hardness Emery Powder , Black Fused Alumina Emery Sand F12 - F240 For Polishing / Grinding

Minimum Order Quantity : 1MT Price : Negotiation
Packaging Details : 25kg bag+Pallet,Ton Bag Delivery Time : 7-14 days depending on the order quantity
Payment Terms : L/C, T/T Supply Ability : 2500 MTS per Month
Place of Origin: Henan,China Brand Name: YEDA
Certification: ISO9001,ISO14001 Model Number: F12-F240

Detail Information

Product Name: Black Emery,Black Fused Alumina Material: 60-80% AL2O3
Usage: Polishing, Grinding Mohs Hardness: 8 - 9
Vicker Hardness: 2000-2200 G/cm3 Color: Black
High Light:

emery sand


emery grain powder

Product Description

Moderate Hardness Emery Powder Black Fused Alumina F 12- F240 for polishing and Grinding
1. Product Description of Emery Powder Black Fused Alumina

Black Fused Alumina is also called as black emery powder,which belongs to the group of electric corundum,

it is produced by the high alumina bauxite, high iron bauxite or iron oxide scrap in an electric arc furnace under

high temperature.


Black Fused Alumina contains 60-85% alumina,it is one kind of abrasive specially made by human control,

which has the stable quality and performance compared with the second grade brown fused alumina.


The production process determines black aluminum oxide has the advantages of low power consumption and

little emission than that of brown aluminum oxide. It is one environment friendly abrasive.


2. Main Technical Index of Emery Powder Black Fused Alumina

Main Technical Index
Color Black
Crystral Structure Trigonal
Shape Block,Sharp
Mohs Hardness 8.0-9.0
Vicker Hardness 2000-2200kg/mm2
Specific Gravity ≥3.5g/cm3
Bulk Density 1.22-1.68 g/cm3
Chemical index Al2O3≥60% Fe2O3 6-12%
SiO2≤25% TiO2 2-4%
Quality Level Ordinary
Grit Size F12-F240

3. Main Grinding & Polishing Application of Black Fused Alumina:


Firstly, black Fused Alumina can be used for polishing purpose.

The fine grain e.g.F #100 or the finer grains is used for sand blasting, grinding and polishing of various stainless

steel, ordinary steel, copper, aluminum, bamboo, glass and other workpieces.

Especially when polishing the treatment of stainless steel surface, it will achieve more prominent effect,

it will not easy to burn the treatment and get uniform color and good visual effect.


Secondly, Black Fused Alumina can be used for dual grinding and polishing purpose.


It could be mixed with other higher hardness and better wear resistance abrasives to make polishing wheels,

fiber wheels, abrasive belts, etc. Then it will achieve better polishing effect and higher cost performance compared

with the products made by single black aluminum oxide or purely other polished materials.


In addition,Black Fused Alumina  is also uesed in the following application:

Bonded Abrasives;

Coated Abrasives;

Blasting Media;

Anti-slip wear-resistant aggregates;


Polishing waxes;


5. Product Pakages of Black Fused Alumina

  • Ton Bag
  • 25kg Bag+Pallets;
  • Special packages can be customized.

Moderate Hardness Emery Powder , Black Fused Alumina Emery Sand F12 - F240 For Polishing / Grinding 0

6. Plant Picture of Black Aluminum Oxide Manufacturer

Moderate Hardness Emery Powder , Black Fused Alumina Emery Sand F12 - F240 For Polishing / Grinding 1


7. Why Choose us?

  • 20 years professional black aluminum oxide manufacturer
  • Most advanced production line and testing equipment
  • Stable quality and favorable price
  • More than 20 invention & utility model patents
  • Certificated by ISO9001&14001
  • Main Suppliers of Saint-gobain group,Fosroc group etc.

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