Method and apparatus for separation of heavy and light particles from particulate material
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United States of America Patent
Stats
-
Jul 26, 1994
Grant Date -
N/A
app pub date -
Dec 19, 1991
filing date -
Dec 20, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for the separation of heavy and light particles from material which includes means for fluidising and agitating the material to cause heavy particles to sink from the acceptable material and comprising a deck adapted to receive material at a reception end and means for vibrating said deck to cause the material to move longitudinally along it to a discharge end, said deck having a number of longitudinally extending troughs separated by peaks and means for providing an upwardly directed air flow in the troughs characterised by means for causing two or more stratified material separation zones in each trough to classify the material two or more times.
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