White fused alumina

White fused alumina is a synthetic abrasive medium that fused in an arc furnace with high – quality aluminium oxide as raw material. This abrasive is very pure with more that 99 % of Al₂O₃ content. White fused alumina is very hard and resistant to many aggressive chemicals. In comparison to brown fused alumina it is more homogeneous in chemical content, structure and physical properties. White fused alumina is free of respirable crystalline silica (SiO₂).

 

Application:

 

· Tough cleaning and surface etching applications that have a very low tolerance for iron residue;

· Removing rust and scale from metallic surfaces;

· Cleaning metallic surfaces with removal of material;

· Removing tempering colour;

· Creating a matt finish on surfaces;

· Creating a matt finish on glass;

· Processing very hard component;

· Production of high-grade abrasive tools.

 

Advantages:

 

· No ferric contamination;

· Strict control of size distribution and other physical and chemical properties;

· Excellent thermo – mechanical properties, thermal shock resistance;

· High mechanical stability and strength;

· High volume stability;

· High chemical resistance and chemical stability;

· High density, low permeability for producing high refractoriness;

· Abrasion resistant and high wear-resistant;

· Good corrosion properties.

 

Physical properties:

 

Hardness: 9,0 Mohs

Specific gravity: 3,95 g / cm³

Total density: 1,4 – 2,1 kg / dm³

Shape: angular

Storage conditions: dry and covered

Packing: 25 kg bags, 1 ton per pallet

 

Chemical composition:

 

Al₂O₃: > 99 %

Na₂O: 0,33 %

Fe₂O₃: 0,03 %

SiO₂: 0,06 %

CaO: 0,10 %

White fused alumina fraction sizes:

F8: 2800 – 2360 µm

F10: 2360 – 2000 µm

F12: 2000 – 1700 µm

F14: 1700 – 1400 µm

F16: 1400 – 1180 µm

F20: 1180 – 1000 µm

F22: 1000 – 710 µm

F24: 850 – 710 µm

F30: 710 – 600 µm

F36: 600 – 500 µm

F40: 500 – 425 µm

F46: 425 – 355 µm

F54: 355 – 230 µm

F60: 300 – 250 µm

F70: 250 – 212 µm

F80: 212 – 180 µm

F90: 180 – 150 µm

F100: 150 – 125 µm

F120: 125 – 106 µm

F150: 106 – 75 µm

F180: 90 – 63 µm

F220: 75 – 53 µm