Ural State Mining University, Ekaterinburg, Russia:

Yu. P. Morozov, Professor of a Chair of Mineral Dressing, e-mail: tails2002@inbox.ru

Center of Earth Sciences, Metallurgy and Ore Benefication, Almaty, Kazakhstan:

G. Zh. Abdykirova, Leading Researcher of Laboratory of Flotation Reagents and Dressing

S. B. Dyusenova, Engineer (Master's Degree Student)

LLC “Tails CO”, Ekaterinburg, Russia:

E. A. Faley, Engineer of Scientific-Research Department

Flotation combining with other dressing processes in a single unit is a promising way of increasing the mineral dressing efficiency. According to this, the flotation classification method was developed, combining flotation and hydraulic classification in the unit. The pulp aeration effect on hydraulic classification characteristics in flotation classifier was investigated. Presence of air bubbles in the hydraulic classification zone tends to equalize the flow velocity over the unit area, and increases the separation size and classification efficiency. The mechanism of the effect of air bubbles on the hydraulic classification characteristics in the flotation classifier is described. It consists in the increase the flow rates by reducing the pulp cross-section area through the present air bubbles and in the lifting of particles with air bubbles through their physical and physical-chemical interaction. The optimal condition for the allocation of flotation classification sand is to ensure the mode of sand unloading from the bed (solid mass fraction 55–60%), formed at the flotation classifier bottom. This paper also presents the examples of full-scale testing of these classifiers on the copper-zinc concentrating plants. The use of flotation classification in closed ore grinding circuit before the flotation allowed obtaining a significant amount of conditioned copper concentrate in the froth product.

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16. Morozov Yu. P., Abdykirova G. Zh., Faley E. A. Perspektivy ispolzovaniya flotoklassifikatsii pri pererabotke khvostov flotatsii sulfidnykh rud (Prospects of use of flotation classification during the processing of flotation tailings of sulfide ores). Materialy Mezhdunarodnoy konferentsii “Resursosberegayushchie tekhnologii v obogashchenii rud i metallurgii tsvetnykh metallov” (14–17 sentyabrya 2015 goda) (Materials of International conference “Resource-saving technologies in ore dressing and metallurgy of non-ferrous metals” (September 14–17, 2015)). Almaty, Karaganda : LLC “Arko”, 2015. pp. 57–59.
17. Morozov Yu. P. Povyshenie kompleksnosti ispolzovaniya sulfidnykh rud na osnove dopolnitelnogo izvlecheniya zolota (Increasing of complexity of use of sulfide ores on the basis of addition gold extraction). Ural State Mining University, LLC “Tails CO”. Ekaterinburg : Publishing House “Fort Dialog-Iset”, 2015. 61 p.
18. Morozov Yu. P., Koltunov A. V., Faley E. A. et al. Flotatsionnyy klassifikator (Flotation classifier). Patent RF, No. 2548866, IPC C 22 B 3/02, B 03 D 1/14. Applier and Patent-holder: LLC “Tails CO”. No. 2014102027/02. Applied : January 22, 2014. Published : April 20, 2015. Bulletin No. 11.