| 摘要 |
<p>Apparatus and process for the beneficiation, or for the continuous hydraulic elutriation of particulate solids. The apparatus is characterized generally as an elongate vessel, with a width of V-shaped cross-section. The upper side of the vessel is provided with launders, or overflow weirs, suitably arranged in series along the two side walls of the vessel. An elongate upwardly faced compartment is provided at the bottom of the vessel by the converging side walls, and preferably it is compartmented. The vessel is provided at one end with a particulate solids inlet, and the opposite end with a particulate solids outlet; and means are provided at the bottom of the vessel for the introduction of liquid. Pumps are employed to withdraw overflow liquid from the launders, and inject same into the vessel bottom compartment, or compartments. The particulate solids, or slurry introduced into the slurry inlet end of the vessel is contacted with an upwardly flowing stream of liquid, the upward rate of which is progressively reduced such that the solids enter into a state of hindered settling. The solids are displaced, and transported in seriatim from one zone, or stage to another, washed, elutriated and discharged at the outlet end of the vessel. Contaminants, or chemicals, or both, and reject size fines are discharged from the vessel with the overflow liquid.</p> |
