Material treatment and apparatus

摘要

A method and apparatus for very fine grinding which uses a rotor rapidly rotating in a compatible cylindrical housing where there is an improvement of a friction inducing surface on the cylindrical face to assist in the grinding effectiveness.

主权项

1. A particle treatment method for reducing particle size including the steps of:
(i) introducing particles to be treated into an apparatus where there is a chamber with a generally cylindrical portion and a rapidly rotating rotor coaxially positioned within the generally cylindrical portion defining a substantially annular space between the rotating rotor and the generally cylindrical portion, two or more blades spaced an equal distance apart around the circumference of the rotor and each extending from the rotor and defining a separation gap between an inner wall of the cylindrical portion and an outer edge or face of each of the respective blades, there being one or more vortex supporting and defining spaces between the respective blades, and at least some of the inner wall of the cylindrical portion having a friction inducing surface including randomly shaped portions projecting into at least some of the vortex supporting and defining spaces at spaced apart locations around a periphery of the generally cylindrical chamber; and (ii) collecting the resultant treated particles.