Apparatus for grinding, milling, crushing, scrubbing, sizing and/or classifying material

Abstract From the Canadian patent

A vibratory apparatus is disclosed for scrubbing, abrading, pulverizing, grinding, crushing milling, and/or separating granular material. The apparatus includes a two mass vibratory system with a tube as part, of the working mass, provided for the granular material and having an inlet end and an outlet end open to a stack at a location lower than the inlet end. The stack has means for creating an upward countercurrent air flow therethrough. A driving mass, including a vibration generating assembly, is provided for vibrating the driving mass and the working mass so that the granular material is agitated in the tube at large accelerations to scrub, abrade, pulverize, grind, crush or mill the …