Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1982-04-02
1984-05-15
Lacey, David L.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209464, 2412601, B03B 100, C22B 302
Patent
active
044486782
ABSTRACT:
In an apparatus and its method of use in which lignite is moved upwardly in an inclined trough by a screw conveyer-agitator and fractured and washed while being so moved and when washed being removed from the upper end of said trough and wherein the lower end of the trough is arranged to provide a section in which a quiescent phase of liquid is formed to allow any suspended lignite to settle therefrom while a supernatant phase containing mineral matter suspended therein is removed the improvement which consists of having a two-section conveyor screw the lower-end portion or length thereof exposed in or by said quiescent phase being structured with a smooth flight or blade which can be rotated without disturbing unduly the supernatant phase thus to avoid suspending lignite therein while the remaining length of the screw conveyor can be structured to impact and fracture the crushed lignite while it is being agitated in the presence of a washing medium.
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Lacey David L.
Phillips Petroleum Company
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