The B.R.G.M. Sieving ? Panel: A New Apparatus For The Granulometric Separation Of Granular Or Clay-Bearing Materials. - 1. Actual Situation Of The Techniques Of Fine Particle Separation

Classical apparatus for granulometric separation generally have limited applications which are found either in the level of the size of separation or in that of the accuracy and the efficiency of the separation or in that of the rate of feed. In industrial practice, the classification of the products of coarse dimensions generally poses no problems. On the contrary, the separation of fine particles presents some difficulties, however the apparatus is used (mechanical classifiers, curved screens and sieves, hydrocyclones, etc...). These difficulties are due to hprfections of separation, rather high cost prices, and sometimes large amounts of recycled materials.