Patent ID: 6988683

Claim:
Apparatus for crushing glass or ceramic material, which apparatus comprises a rotor, rotor blades on the rotor, at least one stationary blade which cooperates in use with the rotor blades as the rotor rotates, and a chamber for receiving crushed glass or ceramic material, the apparatus being such that the rotor is upstream of the chamber, the rotor is rotated at 1200–2800 revolutions per minute, the glass or ceramic material is fed to the rotor at a feed speed of 3–75 meters per second, the glass or ceramic material is first broken into fragments on impact with the rotor, the fragments are reduced in size and formed into cullet by passing through a gap between the rotor blades and the stationary blade, and the action of the rotor blades and the stationary blade causes the cullet to be such that it will not cut, is safe for handling, and is suitable for further use without further processing.