Preparation of abrasive material from spent catalysts

Abstract From the Canadian patent

Abstract of the Disclosure, An abrasive material is prepared from a starting material. comprised of a spent metallic catalyst on an alumina carrier by melting the starting material with a reducing agent to obtain a melt consisting of a melt component including the alumina on an alloy residue cooling the melt, at a speed correlated with a desired crystallite size of the abrasive material to be obtained, and mechanically separating the melt component from the alloy residue before or after solidification, the melt component constituting the abrasive material.