| abstract |
Methods for making ceramic aggregate particles (80) comprising forming a plurality of ceramic aggregate precursor particles (20) from a composition (12) by forcing the composition through at least one orifice (21) in a substrate (22), at least partially curing the ceramic aggregate precursor particles, and heating the ceramic aggregate precursor particles to provide ceramic aggregate particles wherein solid particulates are bonded together by ceramic binder. In another aspect, the present invention provides methods for making an abrasive article utilizing methods for making abrasive ceramic aggregate particles comprising forming a plurality of ceramic aggregate precursor particles by passing a composition through at least one orifice in a substrate, separating the abrasive ceramic aggregate precursor particles from the substrate, at least partially curing the abrasive ceramic aggregate precursor particles, heating the abrasive ceramic aggregate precursor particles to provide abrasive ceramic aggregate particles bonded together by ceramic binder, and combining at least a portion of the abrasive ceramic aggregate particles with abrasive article binder material and abrasive material, with or without another abrasive material, to provide an abrasive article. |