Patent ID: 8828242
Filing Date: 2014-09-09
Classification: B01D,C02F

Abstract:
1. A method of delivering an output flow of slurry to a tracking screen using a duct, the method comprising: delivering a flow of slurry to an inlet portion of the duct, wherein the flow of slurry comprises a flocculated solid suspended in a liquid; introducing a flow of gas into the flow of slurry using a gas feed conduit having a plurality of apertures to produce an internal flow of slurry having a substantially even distribution of gas bubbles that prevent precipitation of the flocculated solid in the duct, wherein at least the plurality of apertures and a portion of the gas feed conduit are located in the duct; delivering the internal flow of slurry to the outlet portion of the duct where the gas bubbles break the surface of the slurry to produce the output flow of slurry comprising the flocculated solid suspended in the liquid; and delivering the output flow of slurry to the tracking screen to separate at least a portion of the flocculated solid from the liquid.