Abstract: A high-energy and superfine attritor for solids has inlet and outer fittings open tangentially into a generally cylindrical milling vessel containing a charge of loose milling bodies. The gas flow through the vessel can alternate in velocity and the rotor speed can alternately pass from a relatively high speed to a relatively low speed.
Abstract: A mill, especially an intermittently operating mill with milling bodies is emptied or filled through an opening provided with a pair of ball cocks of which a ball proximal to the opening is integrated with a sieve plate in its throughgoing bore, thereby eliminating dead zones and contamination resulting from wear of the sieve.
Abstract: An attritor has one end of the milling chamber defined by a wall from which a bearing and seal housing is cantilevered, the wall having a flange onto which the milling vessel can be replaceably and interchangeably attached. The milling vessel and housing have a horizontal axis and a rotor rotatable about this axis in the housing as agitator elements for the loose milling medium therein.
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