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ArticleName Substantiation of the Erdenetiyn-Ovoo copper-molybdenum ore flotation technology with the use of tertiary acetylene alcohol
DOI 10.17580/nfm.2020.02.01
ArticleAuthor Yushina T. I., Purev B., Namuungerel B.
ArticleAuthorData

NUST MISiS, College of Mining, Moscow, Russia:

T. I. Yushina, Assistant Professor, Head of the Department of Beneficiation and Processing of Minerals and Тесhnogenic Raw Materials, e-mail: yuti62@mail.ru
B. Purev, Post-Graduate Student, Department of Beneficiation and Processing of Minerals and Тесhnogenic Raw Materials, e-mail: bayanokk@yahoo.com

 

Erdenet Mining Corporation, Ulan Bator, Mongolia:
B. Namuungerel, Director of Technical Operations of Concentrating mill, e-mail: namuun@erdenetmc.mn

Abstract

The article presents the results of a study of the factors affecting the efficiency of the copper-molybdenum ore flotation. The objective of this work was to substantiate and develop a reagent mode for flotation of the Erdenetiyn-Ovoo porphyry copper ores, which makes possible extracting main copper and molybdenum minerals into corresponding concentrates more fully and selectively. It is shown that the use of a DC-80 (2-methyl-3-butin-2-ol) flotation reagent in assosiation with the main base mode reagents — an AERO MX-5152 (a mixture of allyl ethers of xanthogenic acids with n-butyloxycarbonyl-O-n-butylthionocarbamate) combined nonionized collector, a BK-901B (a composition of dialkyldithiophosphate and O,N-dialkyldithiocarbamate) blending ionized collector; diesel fuel; a MIBC (methyl isobutyl carbinol) frother; sodium sulphide Na2S as a modifier and lime СаО as a pH regulator of the medium allows obtaining a noticeable, economically sound additional recovery of both copper and molybdenum. Quantum chemical calculations have permitted to establish an important feature of the mechanism of interaction between the DC-80 molecules that can form stronger complexes based on -bonds with metal cations of sulfide minerals in comparison with allyl ethers of xanthogenic acids. The energy indicators of the formation of bonds between Cu2S, the DC-80 molecules and allyl ether of xanthic acid were calculated. There were shown the models of the assumed interaction of small mineral particles with air bubbles during flotation, which are determined by physical and chemical properties of the molecules of acetylene-containing reagents. The principal difference between the properties of the foam bubbles formed by acetylene-containing molecules for at least 50% and that of the ordinary foam bubbles formed by standard frothers has been demonstrated in the view of the mechanism of their fixing on the surface of small particles of sulfide minerals and the surface of the bubbles. The optimal flotation mode, comprising a DC-80 reagent, BK-901B and AERO MX-5152 base collectors has been developed. The application of this mode will allow increasing the copper and molybdenum recovery into concentrates by 0.62% and 5.76%, respectively, reducing the flotation time by 35–40%, and improving the quality of resulting concentrates. Based on the research results, it is recommended to incorporate the DC-80 acetylene reagent into the basic flotation mode for conducting pilot tests at the Erdenet Mining Corporation enterprises (Mongolia).

keywords Copper-molybdenum ores, flotation, reagent mode, tertiary acetylene alcohols, a DC-80 flotation reagent, complexes based on π-bonds, computer simulation of reagents, copper and molybdenum recovery
References

1. Wisnu Suyantara G. P., Hirajima T., Hajime M., Sasaki K. The Use of Fenton’s Reagent on Selective Flotation of Chalcopyrite and Molybdenite. IMPC-2018–29th International Mineral Processing Congress : collection of reports. Westmount, 2019. pp. 879–886.
2. Zanin M., Ametov I., Grano S., Zhou J., Skinner W. A Study of Mechanisms Affecting Molybdenite Recovery in a Bulk Copper Molybdenum Flotation Circuit. International Journal of Mineral Processing. 2019. Vol. 93, Iss. 3-4. pp. 256–266.

3. Ramirez A. D., Garces M. A., Gutierrez L. E. Evaluation of Dispersants on the Floatability of Molybdenite in Seawater Using Induction Time Measurements. IMPC-2018–29th International Mineral Processing Congress : Collection of Reports. Westmount, 2019. pp. 335–340.
4. Mehrabani J., Pourghahramani P., Asqarian H., Bagherian A. Effects of pH and Pulp Potential on the Selective Separation of Molybdenite from the Sungun Cu – Mo Concentrate. International Journal of Mining and Geoenginering. 2017. Vol. 51-2. pp. 147–150.
5. Mergenbaatar N. An Increase in Flotation of the Cu – Mo Ores By Controlling the Mode Under the Vonditions
of the Use of Multicomponent Collectors. A Thesis of Dissertation … of Candidate of Engineering Sciences. Moscow, 2005. 23 p.
6. Ivankov S. I. Ways of Development of Flotation Process of Mineral Resource Concentration. Moscow : LENAND, 2015. 152 p.
7. Abramov A. A. Flotation Methods of Enrichment. Moscow : Gornaya kniga. 2008. 711 p.
8. Ignatkina V. A., Bocharov V. A., Khachatryan L. S. Flotation of Porphyry Copper-Molybdenum Ores with the Use of Various Collectors and Frothing Agents. Mining Information and Analytical Bulletin. 2007. pp. 321–329.
9. Yushina T. I., D’Elia K., Malyshev O. A., Ogrel L. Flotation of Gold-Bearing Non-Ferrous Ores with Acetylene Alcoholbased Reagents. IMPC-2018 – 29th International Mineral Processing Congress : Collection of Reports. Westmount, 2019. pp. 1425–1433.
10. Jorjani E., Barkhordari H. R., Khorami T., Fazeli A. Effects of Aluminosilicate Minerals on Copper–Molybdenum Flotation from Sarcheshmeh Porphyry Ores. Minerals Engineering. 2011. Vol. 24. pp. 754–759.
11. Luyken W. Die Auffindung der Technischen und Wirtschaftlichen Höchstleistung eines Aufbereitungsprozesses und die Beziehungen Beider Zueinander. Transl. and Ed. by K. F. Beloglazov. Leningrad–Moscow : Gosudarstvennoe nauchno-tekhnicheskoye gornoye izdatelstvo, 1932. 20 p.
12. The Concept of the Development Strategy of the Erdenet Mining Corporation Concentrating Mill for the Prospects of 2016–2025 and 2016–2035 Years. Ulan Bator : Erdenet, 2015. 51 p.
13. Process Directions for Dressing of Copper-Molybdenum Ores from Erdenetiyn-Ovoo Deposit at the Erdenet Mining Corporation Concentrating Mill. Exec. Eds.: Baatarkhuu Zh., Rukavishnikov O. A. Ulan Bator : Erdenet, 2014. 179 p.
14. Yushina T. I., Мalyshev O. A., Shshelkunov S. A., Khrustalev D. P. Peculiarities of the DC-80 Reagent Based on Acethylenic Alcohols Effect in Flotation Processes. Non-ferrous Мetals. 2016. No. 2. pp. 7–11. DOI: 10.17580/nfm.2016.02.02
15. Yushina T. I., Malyshev O. A., Shchelkunov S. A. Flotation of Gold-Bearing Ores of Non-Ferrous Metals Using the Acetylene Alcohol Based Reagents. Tsvetnye Metally. 2017. No. 2. pp. 13–18. DOI: 10.17580/tsm.2017.02.01
16. Yushina T. I., Purev B., D’Elia Yanes K. S., Malofeeva P. R. Improvement of Porphyry Copper Flotation Efficiency with Auxiliary Collecting Agents Based on Acetylene Alcohols. Eurasian Mining. 2019. No. 1. pp 25–30. DOI: 10.17580/em.2019.01.06
17. Methods of organoelement chemistry. Types of Organometallic Compounds of Transition Metals. Book 1. General Editorship by A. N. Nesmeyanov, K. A. Kocheshkov. Moscow : Izdatelstvo Akademii nauk SSSR, 1975. pp. 217–383.
18. Herberhold M. Metal Pi Complexes. Complexes with Mono-Olefinic Ligands. Мoscow : Mir, 1975. 449 p.
19. Abramov A. A., Leonov S. B., Sorokin M. M. Chemistry of Flotation Systems. Moscow : Nedra, 1982. 312 p.
20. General and Inorganic Chemistry. Textbook for Universities. Vol. 1. Theoretical Foundations of Chemistry. Ed. by A. F. Vorobyov. Moscow : IKC Akademkniga, 2004. 371 p.

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