Centrifugal concentrator

B - Operations – Transporting – 04 – B

Patent

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Details

B04B 3/00 (2006.01) B04B 9/00 (2006.01) C22B 1/00 (2006.01)

Patent

CA 2728962

The centrifugal concentrator is designed for gravity separation of mineral raw materials and can be used for processing of gold ore and fine size class sands. The concentrator comprises a bowl installed on a shaft, a rotation drive, a device for feeding raw material, and a device for removing tailings and unloading the concentrate. The bowl shaft and the rotation drive shaft are connected by means of a transmission comprising two universal joints connected by means of a universal joint shaft with a sliding spline joint. Herein, adjoining yokes of adjacent universal joints are installed perpendicularly to each other, and the shaft axes are installed at an angle to each other. In the operating mode, raw material in pulp form is fed to the bottom of the bowl. Due to centrifugal forces the raw material flow is pressed to the inside surface of the bowl. Due to the action of torsional vibrations of the bowl, the wall layer of raw material loosens up. The flow of raw material separates. Heavy fraction particles in the enriched material penetrate pores of the loosened layer, and due to the action of centrifugal forces they concentrate in the bowl in the area adjacent to its inside surface. Light fraction particles together with water flow are discharged over the bowl upper edge. As heavy fraction particles accumulate in the bowl, the concentrator is stopped, and heavy fraction is removed.

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