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Название Full-scale trial of diaphragm-free mineralized recycling water conditions in high-level processing of rebellious kimberlite ore
DOI 10.17580/gzh.2019.02.11
Автор Dvoychenkova G. P., Zyryanov I. V., Kovalchuk O. E., Timofeev A. S.
Информация об авторе

Mirny Polytechnic Institute (Branch), Ammosov North-Eastern Federal University, Mirny, Russia:

G. P. Dvoychenkova, Leading Researcher, Professor, Candidate of Engineering Sciences, dvoigp@mail.ru


Yakutniproalmaz Institute, ALROSA:
I. V. Zyryanov, Deputy Director of Scientific Work, Doctor of Engineering Sciences


Geological Exploration Company, PJSC ALROSA, Mirny, Russia:
O. E. Kovalchuk, Deputy Director for Innovation


Melnikov Institute for Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Moscow, Russia:
A. S. Timofeev, Researcher, Candidate of Engineering Sciences


Key kimberlite reserves in West Yakutia feature high (up to 45 %) content of diamond size grade –5 mm. This fact governs importance of increasing recovery of diamond size grade –5+0.2 mm, which calls for the required level processing of diamond-bearing raw material. To this effect, the method is proposed for intensifying high-level processing of rebellious kimberlite ore by means of electrochemical modification of diamond surface properties. This method involves diaphragm-free electrochemical conditioning of mineralized recycling water, which provides the wanted ion content and physicochemical properties of liquid phase in slurry. Technical efficiency of the developed structures and parameters of diaphragm-free electrochemical conditioners for mineralized recycling water was tested in full-scale processing of kimberlite ore in Mir and Internatsionalny mines. The processes of electrochemical conditioning of mineralized water were investigated in grease and froth separation of rebellious kimberlite ore from the aforesaid mines. The properties of mineralized water and their diaphragm-free electrolysis during grease and froth separation, as well as quality and composition of products of grease and froth separation were examined. The regular variations in properties of recycling water under diaphragm-free treatment of highly mineralized chloride-bearing water are experimentally determined. It is shown that diaphragm-free electrolysis reduces concentrations of carbonate and calcium ions in recycling water as well as pH values of liquid phase, which improves capability of water to dissolve carbonate minerals. It is experimentally found that ore slurry is maximally saturated with fine-dispersion electrolysis gases—hydrogen, oxygen and chlorine, which enhances efficiency of froth separation of diamond-bearing material. The proof test data show the increase in the diamond recovery by 4–4.2 % in the grease separation concentrate and by 5.2–8.8. % in the froth separation concentrate at the decreased consumption of reagents.
The study was carried out in the framework of the Plan for R&D of the Research Institute for Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, No. 0138-2014-0002, under the direction of Academician V. A. Chanturia.

Ключевые слова Diamond, kimberlite, mineral formations, modification, slurry, admixture, grease separation, foam separation, testing, recovery
Библиографический список

1. Zhang J., Kouznetsov D. L., Yu M., Rylatt M., Yoon R.-H. Improving the separation of diamond from gangue minerals. Minerals Engineering. 2012. Vol. 36–38. pp. 168–171.
2. Sobolev N. V., Shatsky V. S., Zedgenizov D. A., Ragozin A. L., Reutsky V. N. Polycrystalline diamond aggregates from the Mir kimberlite pipe, Yakutia: Evidence for mantle metasomatism. Lithos. 2016. Vol. 265. pp. 257–266.
3. Agrosì G., Nestola F., Tempesta G., Bruno M., Scandale E., Harris J. X-ray topographic study of a diamond from Udachnaya: Implications for the genetic nature of inclusions. Lithos. 2016. Vol. 248-251. pp. 153–159.
4. Spetsius Z. V., Cliff J., Griffin W. L., O'Reilly S. Y. Carbon isotopes of eclogite-hosted diamonds from the Nyurbinskaya kimberlite pipe, Yakutia: The metasomatic origin of diamonds. Chemical Geology. 2017. Vol. 455. pp. 131–147.
5. Wang J., Wan L., Hao S., Chen J. Surface modification of diamond and its effect on the mechanical properties of diamond/epoxy composites. Science and Engineering of Composite Materials. 2017. Vol. 24, Iss. 2. pp. 271–278.
6. Maksimovskiy E. A., Fainer N. I., Kosinova M. L., Rumyantsev Yu. M. Study of the structure of thin nanocrystalline films. Journal of Structural Chemistry. 2004. Vol. 45. Iss. 1. Supplement. P. 60–64.
7. Verkhoturov M. V., Amelin S. A., Konnova N. I. Concentration of diamonds. Mezhdunarodnyi zhurnal eksperimentalnogo obrazovaniya. 2012. No. 2. p. 61.
8. Goryachev B. E. Diamond-Bearing Ore Technology. Moscow : MISIS. 2010. 326 p.
9. Zedgenizov D. A., Ragozin A. L., Kalinina V. V., Malkovets V. G., Pomazanskii B. S. Mineral nests in diamonds from Nyurbinskaya kimberlite pipe (Yakutia). Geology and Mineral Reserves of the North-Eastern Russian : All-Russian Scientific–Practical Conference Proceedings. Yakutsk, 2015. pp. 173–176.
10. Logvinova A. M., Wirth R., Zedgenizov D. A., Taylor L. A. Carbonate–Silicate–Sulfide Polyphase Inclusion in Diamond from the Komsomolskaya Kimberlite Pipe, Yakutia. Geochemistry International. 2018. Vol. 56, Iss. 4. pp. 283–291.
11. Vasilenko V. B., Kuznetsova L. G., Tolstov A. V., Minin V. A. Key processes determining secondary alterations in kimberlites. Geochemistry International. 2016. Vol. 54, Iss. 4. pp. 369–377.
12. Chanturiya V. А., Dvoychenkova G. P., Kovalchuk О. Ye. Mechanism of fine dispersed mineral formation on the surface of diamonds and their removal by water system electrolysis products. Proceedings of XXVIII International Mineral Processing Congress. Québec, 2016.
13. Bogachev V. I., Zuev A. V., Minenko V. G. Mechanism of passivation and activation of natural diamonds during their recovery from kimberlite. II Congress of Dressers from the CIS Countries: Head-Notes. Moscow : MISIS, 1999. p. 112.
14. Dvoichenkova G. P. Mineral formations on natural diamond surface and their destruction using electrochemically modified mineralized water. Journal of Mining Science. 2014. Vol. 50, Iss. 4. pp. 788–799.
15. Chanturia V. A., Goryachev B. E. Dressing of diamond-bearing kimberlite. Advanced Technologies of Integrated Mineral Processing : Collected Works. Moscow : Ore and Metals Publishing House, 2008. pp. 151–163.
16. Chanturiya V. A., Dvoichenkova G. P., Kovalchuk O. E., Timofeev A. S., Podkamenny Yu. A. The distribution analysis of secondary minerals and their associations on diamond surface and processing products of metasomatically altered kimberlites. Rudy i metally. 2016. No. 2. pp. 73–83.
17. Garrels R. M., Christ C. L. Solutions, Minerals, Equilibria. Translated from English. Moscow : Mir, 1968. 407 p.
18. Strickland-Constable R. F. Kinetic and mechanism of chystallization. Translated from English. Leningrad : Nedra, 1971. 310 p.

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