Journals →  Tsvetnye Metally →  2012 →  #8 →  Back

ArticleName Flotation research of the ores of ferrous and noble metals by steam-and-air mixture
ArticleAuthor Evdokimov S. I., Artemov S. V., Panshin A. M., Datsiev M. S.

The North Caucasian Institute of Mining and Metallurgy (State Technological University), Vladikavkaz, North Ossetia Alania Republic, Russia

S. I. Evdokimov, Assistant Professor, e-mail:
S. V. Artemov, Post Graduate Student
A. M. Panshin, Candidate for a Doctor`s Degree

M. S. Datsiev, Post Graduate Student


The authors developed flotation technique according to which the gas phase used the bubbles produced by dispergating in the composite stream pulp from the saturated water vapour (t = 104 oC, p = 0,12 MPa) and air (t = 15–20 oC). For this procedure air, suched by the flotomachine impeller block, was mixed with the water vapour resulting in the aerovapour bubbles formation in the pulp when the aerovapour mixture is used as a gaseous phase, the boundary layer is heated due to the great heat of the a water vapour condensation (2685 kJ/kg), chauging the surface forces balance in the gap between a particle and bubbles and consequently the flotation sticking result. A special method and device were developed to measure the aerovapour bubbles based on the induction excitation in the coil windings during the magnetic stream chauge through the winding surface with the bubbles appearance in the ferromagnetic liquid filling in the coil. The bubbles size decreases 2–2,5 times in the conditions modeling the aerovapour flotation process in the laboratory tests the heating vapour expenditure made up 1,36 m3/min per 1 m3 of the flotomachine bulk. The enrichment scheme principle based on the raw concentrate manufacture in 2 steps was suggested: Ѕ of the initial raw material was used to separate the raw concentrate of the first enrichment stream mixing it with another Ѕ part and extraching the raw concentrate of enrichment stream II being transferred to the repurification. This technology used at the Olympiadninsky deposit showed the concentrate yield decrease from 4,01 to 2,98% while gold extraction level is kept on the same level reducing the load and expenditures on the following operation of the concentrate biooxidation and cianation. At the Urupsky deposit the stream flotation scheme and aerovapour mixture use as a gaseous phase, copper content in the finished concentrate was 1,79% higher, the extraction was 4,24% higher while gold extraction into the finished copper concentrate increased by 8,72% due to gold content increase from 5,5 to 7,0 g/t.

keywords Flotation, dry air, saturated water vapor, extraction, gold, copper

1. Abramov A. A. Teoreticheskie osnovy optimizatsii selektivnoy flotatsii sulfidnykh rud (Theoretical basis of selective flotation optimization of sulphide ores). Moscow : Nedra, 1978. 280 p.
2. Eygeles M. A. Osnovy flotatsii nesulfidnykh mineralov (The basis of a flotation of non-sulphide minerals). Moscow : Nedra, 1964. 407 p.
3. Evdokimov S. I., Panshin A. M. Tsvetnye Metally — Nonferrous metals. 2009. No. 12. pp. 23–27.
4. Vigdergauz V. E., Shrader E. A., Sarkisova L. M., Kuznetsova I. N. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh — Journal of Mining Science. 2006. No. 5. pp. 107–114.
5. Snitkovskiy M. M. Mezomorfnost granichnykh sloev nekotorykh uglevodorodov (Mesomorphity of a boundary layers of some hydrocarbons). Sbornik dokladov Pyatoy Konferentsii po poverkhnostnym silam “Poverkhnostnye sily v tonkikh plenkakh i ustoychivost kolloidov”. Moskva, 1972 (Reports from the V Conference on the surface forces “ Surface forces in thin films and steadiness of colloids”, Moscow, 1972). Moscow : Nauka, 1974. pp. 38–43.
6. Churaev N. V. Uspekhi Khimii — Russian Chemical Reviews. 2004. Vol. 73, No. 1. pp. 26–38.
7. Korolev A. V. Energetika : Izvestiya vysshikh uchebnykh zavedeniy i energeticheskikh obedineniy SNG — Energetics : Information of universities and energetic consolidations of SIC. 2009. No. 6. pp. 31–36.
8. Plaksin I. N., Okolovich A. M., Dmitrieva G. M., Makienko I. I., Kryukova N. A. Novaya tekhnologiya obogashcheniya svintsovotsinkovoy rudy (New technology of benefication of lead-zinc ore). Moscow : Gosgortekhizdat, 1961. 128 p.
9. Panshin A. M., Evdokimov S. I. Obogashchenie Rud — Mineral processing. 2009. No. 5. pp. 6–11.
10. Evdokimov S. I., Panshin A. M. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 2009. No. 1. pp. 7–12.

Language of full-text russian
Full content Buy