Liquid purification or separation – Processes – Separating
Patent
1989-06-29
1990-03-13
Sever, Frank
Liquid purification or separation
Processes
Separating
2105122, B01D 17038
Patent
active
049081390
ABSTRACT:
Particulate material such as coal of a size inferior to 1 mm is recovered by being entrained in a liquid medium and being fed through an apparatus comprising a plurality of cyclone separators connected in series, the cyclone angle of the separators decreasing in the direction of flow. The cyclone angle .alpha..sub.2 of a cyclone separator in the series is within .+-.5% of the angle calculated according to the formula ##EQU1## where .alpha..sub.2 is the cyclone angle of a cyclone separator following a separator with angle .alpha..sub.1 and .phi..sub.1 and .phi..sub.2 represent the geometric mean particle size of the cut of successive separators with these angles.
REFERENCES:
patent: 4023942 (1977-05-01), Brady
patent: 4394138 (1983-07-01), Schilling
Ryan Investments, B.V.
Sever Frank
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