ABSTRACT
Model investigations were carried out in response to the need for improvements in the methods for accelerated gravity concentration of heavy fine particles. The search of an economical and environmentally suitable method for utilisation of low grade mineral deposits, has proved to be a serious objective for fine particles technological investigations. One of the potential methods for concentration of fine heavy particles is the centrifugal acceleration of settling velocity for the pulps with following detention of the heavier components in the concentrating area of the device. This method gives a possibility for high specific density fine particles concentration in high throughput centrifuges at the minimum floor area and energy consumption. An important factor having influence on the centrifugal gravity concentration is the feed particle size distribution. Some practical results provide evidence that the preliminary narrow size classification of the treated suspension will lower the chance of microturbulent dispersion activity in the detention zones. For this purpose, an additional provocation of disturbed conditions for the material packing inside the bowl riffles could improve the selectivity of the centrifugal concentration and working cycle prolongation.
