Patent ID: 7108136
Filing Date: 2006-09-19
Classification: B03D,C02F

Abstract:
1. A separating device especially for use in a pneumatic flotation system comprising: an annular channel, at least one nozzle capable of introducing aerated pulp, with pre-established speed, substantially horizontally and tangentially into the annular channel, froth extraction means for the removal of separated froth from the annular channel, and pulp extraction means for the removal of separated pulp from the annular channel, wherein the at least one nozzle is configured so that the aerated pulp introduced into the annular channel rotates therein with centrifugal forces of between 5 and 20 ms wherein the pulp extraction means comprises a pulp overflow weir and a plurality of apertures in the annular channel positioned below a top of the pulp overflow weir.