Method for producing alumina and alumina-zirconia abrasive material
AssigneeTreibacher Chemische Werke Aktiengesellschaft
InventorsBernard Ilmaier, Hans Zeiringer
Life of this patent
Estimating the term…
Abstract
Abrasive granules are produced from alumina or an alumina-zirconia mixture by melting the oxide material and rapidly cooling the melt. To control the solidification velocity, the melt is cast into a molten chloride of Na, Ca, Ba, Mg or mixtures thereof to cool the oxide material melt, the chloride is separated from the cooled and solidified oxide material, and thereafter abrasive granules are produced from the solidified oxide material.
Claims18
A method for producing abrasive granules on the basis of an oxide material selected from the group consisting of alumina and a mixture thereof with zirconia, wherein the oxide material is melted and the melt is rapidly cooled, comprising the steps of casting the melt into a molten salt selected from the group consisting of NaCl, CaCl.sub.2, BaCl.sub.2, MgCl.sub.2 and mixtures thereof to cool the oxide material melt, separating the salt from the cooled and solidified oxide material, and thereafter producing abrasive granules from the solidified oxide material.
Dependencies are inferred from the claim text.