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Zhengzhou Zhengtong Abrasive import&export Co., Ltd
[ Henan, China (Mainland) ]

    Main Products:
  • brown fused alumina
  • black fused alumina
  • ceramic beads blasting
  • white fused alumina
  • Zirconia beads grinding media
    Business Type:
  • Trading Company

View Contact Details

iAbrasive AD

Al2O3 62.% Min. Black Aluminum Oxide Abrasive grain , Aluminium Oxide Blasting abrasive

Product Details

Henan, China (Mainland)








Al2O3 62% Min.

8.0 Mohs


For cutting discs, sandblasting, coated abrasives, polishing and wear-resistant pavement

25kgs bags+ Ton bag or pallet

Payment & Shipping Terms



Tianjin port, Qingdao Port

7-30 days

25kgs bag+Ton bag or pallet

16000 / Year

L/C, D/P, T/T

Detailed Product Description



Black aluminum oxide is a new type of sandblasting and polishing media. It is made of trihydrate and boehmitic bauxite as raw materials by arc furnace smelting and cooling process. The black aluminum oxide abrasive has concentrated basic grits distribution and good toughness.

The production process determines that the power consumption is lower than that of brown fused alumina, and the emissions are less. It is an environmentally friendly and cost-effective abrasive product.

Mainly used for blasting and polishing for stainless steel, metal products, optical glass, bamboo and wood products, and also a new abrasive to manufacture bonded abrasives grinding wheels, cutting sheets and abrasive sand paper.


Specification Chemical Composition %
Al2O3 Fe2O3 SiO2
Ordinary Grade 62% Min. 6-12% ≤25
Top quality 80% Min. 4-8% ≤10


Items Index
Color Black
Crystal Structure Trigonal
Hardness (Mohs) 8.0-9.0
Melting temperature(℃) 2050
Max. operating temperature(℃) 1850
Specific gravity(g/cm3) 3. 50 Min.



Sizes Available:
Ordinary Grade Top-quality
Grits: F12#-F400 Grits: F46#-F240#
Section sand: 0-1,0.4-1,1-3,3-5mm Micropowder: F280-F1000


  • Sandblasting:

Residual removal for various work pieces surface

Pipeline cleaning

Hull de-rust

Higher cost effective to replace of brown fused alumina

  • Polishing:

Especially for stainless steel work piece polishing with unique advantage because of

its moderate hardness and good toughness


It is also possible to combine black fused alumina with other abrasives of higher hardness

and better wear resistance like brown fused alumina to make polishing abrasives such as

polishing wheels, fiber wheels and abrasive belts.

The effect is better than using black fused alumina only or simply using other single abrasive.

better grinding and polishing effect, higher cost performance.


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Caroline Cui