Study of Ultrasonic Exposure on the Flotation Selectivity in Processing Waste from the Yaroslavl Mining Company
L. A. Kienko1, O. V. Voronova1, S. A. Kondrat’ev2
1Institute of Mining, Far East Branch, Russian Academy of Sciences, Khabarovsk, 680000 Russia
2Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: техногенное сырье, флюорит, кальцит, ультразвуковая обработка, десорбция, селективность, Man-made raw materials, fluorite, calcite, ultrasonic treatment, desorption, selectivity
Abstract
The processability of industrial waste of the Yaroslavl mining company was studied. The features of processing characteristics of secondary raw materials were estimated. The methods to eliminate the negative effects caused by residues of primary processing reagents and new formations on mineral particles were considered. The effectiveness of ultrasonic slurry treatment aimed at updating the surface of mineral particles and desorption of surface coatings is shown. Experimental data are presented that indicate an increase in the selectivity of fluorite and calcite separation from the head operations of flow chart. A comparative analysis of the flotation kinetics using the standard model and the flow chart with ultrasonic slurry pretreatment indicates an increase in the process speed with a simultaneous selectivity growth. It was found that extraction of fluorite to concentrates with 93.48% of CaF2 and the use of ultrasonic treatment of flotation feed reaches 60.27-64.43%, and with 95.67% of CaF2-49.82%.
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