GRINDING OF PARTICULATE MATERIAL

摘要

An apparatus and method for processing particulate material to reduce the particle size thereof comprising means defining an enclosed path progressively decreasing in cross section and entraining the material in a high pressure liquid jet to carry it along the path in the direction of decrease of the path. The jet will carry the particles along said path to be impacted on the wall of the passage and the material therein to fracture the particles to reduce the size thereof, and delivering from said defined path particles below a selected size.