| 20090014365 | METHOD AND DEVICE FOR CONCENTRATING SUBSTANCES IN SOLID PARTICLE STATE - A method for concentrating a particulate matter, comprising at least two constituents of different densities, in which a slurry of particulate matter is subjected to centrifugation and to centripetal pulses in a centrifugation chamber. A dense fraction of the slurry and a light fraction of the slurry are drawn off separately from the centrifugation chamber. In order to produce the centripetal pulses, a fluid is injected into the slurry, in a direction oblique or tangential to the direction of centrifugation. The fluid is injected substantially continuously into the slurry. | 01-15-2009 |
