Fluid energy mill for large particulate materials

Details Fluid energy mill for large particulate materials Fluid energy mill for large particulate materials

1977-06-13

1978-12-26

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 5, B02C 1906

Patent

active

041312392

ABSTRACT:
A "fluid energy" mill comprising a generally arcuate or torroidal housing in which a centrifugally-whirled circulating stream of high pressure gaseous fluid is used as a grinding medium for particulate material having relatively large particle sizes; the mill having a by-pass duct leading from a classification zone where lighter particles are separated from heavier particles to a grinding chamber; the by-pass duct acting as a passage for the heavier particles back to the grinding chamber where they are mixed with newly entering particulate material fed to the grinding chamber; and a passage in the median portion of the by-pass duct connecting with a separator for removing the heaviest particles from the by-pass duct.

REFERENCES:
patent: 2237091 (1941-04-01), Stephanoff
patent: 2325080 (1943-07-01), Stephanoff
patent: 2590219 (1952-03-01), Stephanoff
patent: 3252663 (1966-05-01), Kidwell
patent: 3467317 (1969-09-01), Stephanoff
patent: 3491953 (1970-01-01), Stephanoff
patent: 3648936 (1972-03-01), Stephanoff

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