The relevance of flotation classification in a closed grinding cycle

The article discusses a brief history of development of the flotation classification, reflects current trends in the development of flotation ore dressing, in foreign and domestic enrichment practice. Variants of implementation of the flotation classification, due to behavioral patterns, the degree of interaction are discussed. The relationship of flotation and gravitational processes in the flotation classification was identified and confirmed by theoretical and experimental studies. The directions of application of the flotation classification in a closed grinding cycle were considered. Variants of practical application of the flotation classification in a closed grinding cycle for sulfide ores and on tailings for various products of the grinding cycle, in the modes of froth flotation and separation were analyzed, the main advantages were identified. Ways to achieve optimal conditions for flotation classification were described. A new direction for the flotation classification using tapering chutes was identified. It is possible to obtain a conditional concentrate of flotation classification in a closed grinding cycle with the enrichment of the froth product in the tapering chutes. The flotation classification of tailings ensures the maximum extraction of flotation minerals into the froth with the tailings flotation classification being drained. A schematic diagram of flotation classification enrichment in a closed grinding cycle is presented, and the results of calculating final flotation classification parameters for sulphide copper ore dressing are presented. Flotation classifiers in a closed grinding cycle reduce energy costs and increase technological indicators of the enrichment of mineral and industrial raw materials.