Method and apparatus for pulverizing particulate material

Details Method and apparatus for pulverizing particulate material Method and apparatus for pulverizing particulate material

B - Operations, Transporting

02

C

241/24

B02C 17/16 (2006.01) B02C 21/00 (2006.01) B02C 23/32 (2006.01) B02C 23/36 (2006.01)

Patent

CA 1310939

ABSTRACT OF THE DISCLOSURE A method and apparatus for pulverizing a material such as sand to a desired particle size. The apparatus has a pulverizing shell in which the material to be pulverized is fed and pulverized. The pulverized fluid-carried material overflows the shell so as to be fed into a settling classifier, where the coarser material settles and is discharged through its bottom opening back into the shell for repulverization. The finer material overflows the classifier and is fed to an intermediate bin, which has its bottom connected to the shell through a valve. When the bin is filled up with the material, the valve is opened so that the material in the bin is returned to the shell. The material is thus circulated through the shell, classifier and intermediate bin. The shell is adapted to be alternately connected to the intermediate bin and a product collector bin by a changeover valve. When the material overflowing the shell is pulverized to a desired particle, size, the shell is now brought into communication with the collector bin.

588917

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