Titanium Oxide-Containing Aluminum Oxide Particles Based on Corundum Melted in an Electric Arc Furnace from Calcined Alumina, and a Method for the Production Thereof

摘要

Titanium oxide-containing aluminum oxide particles are based on corundum melted in an electric arc furnace from calcined alumina. The particles may have an aluminum oxide content of less than 97.0% by weight, a titanium oxide content ranging from 1.3% by weight to 1.8% by weight, and a zirconium oxide content of ranging from 0.02% by weight to 0.1% by weight. The aluminum oxide particles may have an arithmetic mean compactness of less than 0.8.

主权项

1. Titanium oxide-containing aluminium oxide particles based on corundum melted in an electric arc furnace from calcined alumina comprising the chemical composition:
Al2O3 greater than 97.0% by weight, Fe2O3 0.05% by weight to 0.2% by weight, SiO2 0.1% by weight to 0.5% by weight, TiO2 1.3% by weight to 1.8% by weight, ZrO2 0.02% by weight to 0.1% by weight, Na2O 0.05% by weight to 2.0% by weight, and others less than 0.2% by weight, in each case based on the total weight of the melted corundum, characterized in that the ratio of the sum of the percentages by weight of Fe2O3, SiO2, and ZrO2 to the percentage by weight of Na2O is less than 10.