CORUNDUM-BASED ALUMINIUM OXIDE PARTICLES CONTAINING TITANIUM OXIDE BURNT-OUT IN ARC FURNACE FROM CALCINED ALUMINA AND METHOD OF THEIR PRODUCTION Russian patent published in 2016 - IPC C01F7/38 C09K3/14 C04B35/111

Abstract RU 2582399 C2

FIELD: metallurgy.

SUBSTANCE: titanium-oxide-bearing aluminium oxide particles based on corundum feature the content of aluminium oxide >97.0 wt %, titanium oxide - 1.3-1.8 wt %, iron III oxide - 0.05-0.2 wt %, silicon oxide - 0.1-0.5 wt %, sodium oxide - 0.05-2.0 wt % and zirconium oxide - 0.02-0.1 wt %. Note here that the ratio between the sum of weight fractions Fe₂O₃, SiO₂ and ZrO₂ and Na₂O weight fraction is smaller than 10. The aluminium oxide particles feature the mean arithmetic compactness smaller than 0.8.

EFFECT: production of particles suitable for making of abrasive or heat-resistance materials.

5 cl, 2 dwg, 4 tbl

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RU 2 582 399 C2

Authors

Zakhze Sebastjan

Berger Andreas

Dates

2016-04-27—Published

2012-11-23—Filed