The results of laboratory and pilot-industrial testings of vibrational columns in the process of extraction of tantalum and niobium from pulps as well as of extraction of zinc, rhenium and osmium from sulfuric-acid solutions are presented. Possibilities of application of these devices as flotation machines in the conditions of processing of poor copper-nickel raw materials are discussed. High efficiency of vibrational extraction is shown. Optimal hydrodynamical conditions and technological process parameters are defined.
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