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Abstrakt The paper deals with verification of floatability of a classical collector Montanol 551 and pyrolysis oils that were formed through pyrolysis of agricultural residues from basic industry and used in the flotation of black coal. The results imply that it is possible to produce collectors also from waste agricultural products, which may be applicable in the flotation of black coal.doi:10.2478/gse-2014-0025 fatcat:eeyj5gkf7bbrlkrantigmf3cta