| 摘要 |
A device for suspending solid particles in a turbulent fluid for the purpose of concentrating particles of interest such as mineral particles comprises an upright column (2) provided with a plurality of impellers (22) spaced along a rotatable shaft (20) extending centrally within the column 2. An inlet (14) is provided near the bottom of the column to introduce compressed gas which is dispersed by the rotating impellers (22) to create a rising column of bubbles through a slurry of particles in a liquid so that a gas to liquid gradient is provided along the column (2). Disks (37) are spaced along the shaft (20) between the impellers (22), and baffles (39) are provided longitudinally at the inner surface of the column (2) to control the swirling of the fluid caused by the impellers (22). |
