B - Operations – Transporting – 04 – C
Patent
B - Operations, Transporting
04
C
182/151, 209/85
B04C 5/04 (2006.01) B01D 21/26 (2006.01)
Patent
CA 1085317
ABSTRACT OF THE DISCLOSURE The invention provides a method and apparatus for thickening centrifugally separable fractions by the steps of providing a pressurized stream of a liquid suspension medium containing a fraction separated centrifugally from any other fraction, causing the stream of the suspension to flow in the form of an annular helical vortical flow, passing the stream of the suspension through a restricted opening, allowing the stream of the suspension to expand into a larger volume contained within a converging confining zone converging in the direction of stream flow and towards the discharge zone having a re- stricted opening of a size smaller than the size of the first- mentioned restricted opening, regulating the flow of the stream of the suspension to form and maintain the stream as a first vortex of the suspension flowing towards the discharge zone whereby a portion of the suspension reverses direction in the converging zone adjacent the restricted opening of the converging zone and forms a second vortex flowing towards the first-mentioned restricted opening, withdrawing a thickened suspension through the restricted opening of the discharge zone, and withdrawing the second vortex containing the suspension expressed by the thickening action through the first- mentioned restricted opening.
258562
Consolidated-Bathurst Limited
Mcfadden Fincham
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