Method and apparatus for separation by flotation in a centrifugal field
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United States of America Patent
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Jul 16, 1996
Issued Date -
N/A
app pub date -
Nov 10, 1994
filing date -
Oct 19, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for the separation of particles from a particulate suspension. The apparatus comprises a rotating flotation drum (10) with a feed distribution chamber (13). Particulate suspension feed enters the chamber through a delivery pipe (20). The feed passes through holes (21) into the particle collection chamber (22). Air is passed into the particulate suspension through a porous inner wall (29) and a froth is generated. The froth and particulate suspension pass into a froth cleaning chamber (32). The froth is washed by being sprayed from a washwater distribution pipe (47). Froth is removed from the drum by a froth scraper (49) through a froth removal chute (50). Unfrothed particulate suspension passes through openings (40) into a weir chamber (41) and is removed through a launder (45).
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