Classifying – separating – and assorting solids – Stratifiers – With liquid treatment
Patent
1983-12-02
1985-05-07
Spitzer, Robert
Classifying, separating, and assorting solids
Stratifiers
With liquid treatment
209505, B03B 558, B04B 110
Patent
active
045156891
ABSTRACT:
A centrifugal classification apparatus for separating particulate solids, such as sand, in a fluid mixture into fractions having common physical characteristics, such as particle size and/or weight. The apparatus includes a frusto-conical hollow shell rotatable about a longitudinal rotation axis and having an inlet opening at one end for receiving the fluid mixture and an outlet opening at its other end; a discharge aperture in the shell between its inlet and outlet openings through which the solids may pass; and a collecting compartment fast with the shell and located about the discharge aperture for collecting a fraction of the solids having common physical characteristics. The compartment extends radially outwardly from the shell and has a radial depth greater than the maximum longitudinal width of the aperture, a closable discharge orifice at its radially outer end; and a valve at the orifice for controlling discharge of solids from the compartment. The apparatus also has a flushing means for introducing a counter-current flushing fluid into the collecting compartment between its discharge orifice and the aperture. A further embodiment of the apparatus includes a weir projecting circumferentially from the shell and located between the inlet and outlet openings. In addition, the aperture is divided into two apertures by a circumferential splitting member spanning the aperture.
REFERENCES:
patent: 3347376 (1967-10-01), Johnston
patent: 4286748 (1981-09-01), Bailey
patent: 4361480 (1982-11-01), Corbus et al.
Clasicon (Proprietary) Limited
Spitzer Robert
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