Apparatus for the classifying of powdered bulk materials

Details Apparatus for the classifying of powdered bulk materials Apparatus for the classifying of powdered bulk materials

1986-12-19

1989-01-24

Reeves, Robert B.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

209144, 209154, B07B 400

Patent

active

047995955

ABSTRACT:
The invention relates to an apparatus for classifying powdered bulk materials, particularly ground clinker, limestone or cement raw material, by air sifting. The material to be classified is fed to the cover plate of a cylindrical rotor and charged into a sifting space having the shape of a cylindrical ring which extends between the rotor and a stationary vane ring which is spaced from and surrounds the rotor. While the coarse material descends in the sifting space, the fine material is conveyed into the inside of the rotor and fed to a subsequent separating device for the separating of fine material and sifting air. In order to simplify the construction and stocking, both the rotor and the housing surrounding it are assembled in building-block fashion from a plurality of identical sections, at least one tangential air inlet connection being associated with each housing section. Each housing section can have associated with it at least one cyclone of its own with its own fan. The rotor shaft can also be assembled from individual sections.

REFERENCES:
patent: 2222396 (1940-11-01), Bowen
patent: 3199272 (1965-08-01), Oehlrich
patent: 3372805 (1968-03-01), Lykken et al.
patent: 3477569 (1969-11-01), Klein et al.
patent: 4296864 (1981-10-01), Misaka et al.
patent: 4551241 (1985-11-01), Saverse et al.
patent: 4602924 (1986-07-01), Eschenburg
patent: 4661244 (1987-04-01), Hanke et al.
"Zyklon Umluftsichter" Prospectus No. 3-440d, Humboldt Wedag, Dec. 1979.

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