US2561564A - Pulverizing mill separator, having whizzer ...
1 Claim. l 1 k This invention relates to mills for pulverizing material and particularly to high speed mills for Spaced above the rotating hammers is a fan4 with its suction inlet adjacent the mill casing which creates a iiow of air or gas upwardly through the mill' casing and carries the sutilciently ground material entrained with the air out of `the mill.