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 / dm^3,

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.