Process for the manufacturing of grinding elements from aluminium oxide without firing accessories

Abstract

A process for the manufacture of grinding elements composed of aluminum oxide, the process including the steps of (a) mixing aluminum oxide with from 0.5 to 2.5 Wt. % of an organic binder based on the aluminum oxide to provide a mixture; (b) granulating the mixture to form a granulate; (c) molding the granulate into molded pieces having grinding element shapes by applying pressure thereto; and (d) firing the molded pieces at a temperature ranging from 1500.degree. C. to 1850.degree. C. in a vertical kiln to produce grinding elements comprised of aluminum oxide.

Dependencies are inferred from the claim text.