Justification of water circulation closing in froth flotation cycle of diamond-bearing kimberlites by mathematical modeling

In improvement of froth flotation of diamond-bearing raw materials, it is effective to optimize and maintain water circulation closing to ensure maximum performance of mineral dressing. To this effect, the influence of the water circulation closing quality on the concentration of neutral salts, slimes and flotation agents in the water phase, and, accordingly, on the diamond recovery was studied. The mathematical modeling of the water circulation circuit in the froth flotation cycle, using a combination of the balancing and topological methods, determined the concentration ratios of salts, slimes and flotation agents in recycling water at varied levels of the water circulation closing. The calculated results show that the increased level of the water circulation closing from 60 to 90% leads to the increase in the recycling water mineralization by 50%, in the residual concentrations of reagents by 25–40% and in the slime concentration in the water phase by 180%. The water circulation closing increased by more than 85% allows reducing consumption of agents in the froth flotation cycle of diamond-bearing materials by 5–10%. However, given such level of closing of water circulation, the diamond recovery decreases by 8%, which is governed by the impact of slimes accumulated in the recycling water. The optimal closing level of water circulation in the current single-stage clarification circuit of thickener outflows of froth flotation tailings is 75–80%. The higher level closing of water circulation needs a two-stage circuit of desliming of tailings thickening outflows or requires using control agents in desliming to reduce concentration of slimes in recycling water of froth flotation of diamond-bearing materials.

Keywords: froth flotation, diamonds, closed water circulation, mineralization, slimes, reagents.
For citation:

Morozov V. V., Dvoichenkova G. P., Kovalenko E. G., Timofeev A. S., Kuryanov M. V. Justification of water circulation closing in froth flotation cycle of diamond-bearing kimberlites by mathematical modeling. MIAB. Mining Inf. Anal. Bull. 2022;(12):5-19. [In Russ]. DOI: 10.25018/0236_1493_2022_12_0_5.

Issue number: 12
Year: 2022
Page number: 5-19
ISBN: 0236-1493
UDK: 622.765.4
DOI: 10.25018/0236_1493_2022_12_0_5
Article receipt date: 18.09.2022
Date of review receipt: 25.10.2022
Date of the editorial board′s decision on the article′s publishing: 10.11.2022
About authors:

V.V. Morozov, Dr. Sci. (Eng.), Professor, National University of Science and Technology «MISiS», 119049, Moscow, Russia, e-mail: dchmggu@mail.ru, ORCID ID: 0000-0003-4105-944X,
G.P. Dvoychenkova1,2, Dr. Sci. (Eng.), Assistant Professor, Chief Researcher; Professor, e-mail: dvoigp@mail.ru, ORCID ID: 0000-0002-0940-3880,
E.G. Kovalenko2, Cand. Sci. (Eng.), Chief Engineer, Institute «Yakutniproalmaz» JSC «ALROSA» (PJSC), 678174, Mirny, Republic of Sakha (Yakutia), Russia; Assistant Professor, e-mail: kovalenkoeg@alrosa.ru,
A.S. Timofeev1, Cand. Sci. (Eng.), Senior Researcher, e-mail: Timofeev_ac@mail.ru, ORCID ID: 0000-0002-3382-6007,
M.V. Kuryanov1, Leading Engineer, e-mail: kmikl@yandex.ru,
1 Institute of Problems of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, 111020, Moscow, Russia,
2 Polytechnic Institute (branch), M.K. Ammosov North-Eastern Federal University, 678174, Mirny, Republic of Sakha (Yakutia), Russia.


For contacts:

G.P. Dvoychenkova, e-mail: dvoigp@mail.ru.


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