Stimulation of X-ray fluorescence separation of diamond-bearing materials by recovery of diamond crystals with nonstandard natural luminous intensity

Based on the analyses of X-ray fluorescence separation of rough diamond-bearing concentrates from kimberlite ores, the method of increased recovery of diamonds with nonstandard natural luminous intensity in the main cycle of X-ray fluorescence separation is theoretically substantiated, developed and experimentally approved. This method involves preliminary treatment of a diamond-bearing material by luminophore-bearing agents developed at the IPKON Institute, RAS. These luminophore-bearing agents ensure stimulation of X-ray fluorescence separation, which is proved by: the high indicators of selectivity and steadfastness of the agents on the surface of diamonds in a diamond–kimberlite mixture; the increased recovery of diamonds in X-ray fluorescence separation concentrate; the reduced yield of kimberlite material in concentrates. The mathematical processing of the experimental data obtained within the actual flowsheets of processing diamond-bearing kimberlite ore proves that: the luminophore-bearing agents of the proposed composition in the test conditions ensure maximal concentration (5—6.7%) on the surface of diamond crystals at their low content (0.5—0.6%) in kimberlite; attached to the diamond surface, the luminophore-bearing agents ensure optical signal from the surface in a range of 400–580 nm, which conforms with the kinetic and spectral characteristics of crystals and, accordingly, predetermines recovery of the crystals to concentrate. The pilot tests of the developed mode for treatment of kimberlite-bearing materials containing diamond crystals of nonstandard luminous intensity by the new luminophorebearing agents proved recoverability of diamonds at a level of 75–100% with the total yield of kimberlite rocks to tailings.

Keywords: nonstandard luminescence, diamond crystals, luminophore-bearing agents, attachment selectivity, the kinetic and spectral characteristics, weak luminous intensity, abnormal luminous intensity, diamond concentrate, recovery, pilot tests, modification.
For citation:

Dvoichenkova G. P., Morozov V. V., Chanturia E. L., Podkamenny Yu. A., Timofeev A. S. Stimulation of X-ray fluorescence separation of diamond-bearing materials by recovery of diamond crystals with nonstandard natural luminous intensity. MIAB. Mining Inf. Anal. Bull. 2024;(12):103-117. [In Russ]. DOI: 10.25018/0236_1493_2024_12_0_103.

Acknowledgements:
Issue number: 12
Year: 2024
Page number: 103-117
ISBN: 0236-1493
UDK: 622.7
DOI: 10.25018/0236_1493_2024_12_0_103
Article receipt date: 15.09.2024
Date of review receipt: 16.10.2024
Date of the editorial board′s decision on the article′s publishing: 10.11.2024
About authors:

G.P. Dvoichenkova1,2, Dr. Sci. (Eng.), Assistant Professor, Chief Researcher; Professor, e-mail: dvoigp@mail.ru, ORCID ID: 0000-0002-0940-3880,
V.V. Morozov3, Dr. Sci. (Eng.), Professor, Professor, e-mail: dchmggu@mail.ru, ORCID ID: 0000-0003-4105-944X,
E.L. Chanturia3, Dr. Sci. (Eng.), Professor, Professor, e-mail: elenachan@mail.ru, ORCID ID: 0000-0002-4410-8182,
Yu.A. Podkamenny1,2, Cand. Sci. (Eng.), Researcher; Head of Chair, e-mail: mirniy.yuriy@mail.ru, ORCID ID: 0000-0002-4104-9113,
A.S. Timofeev1, Cand. Sci. (Eng.), Senior Researcher, e-mail: Timofeev_ac@mail.ru, ORCID ID: 0000-0002-3382-6007,
1 Institute of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, Moscow, 111020, Russia,
2 Mirny Polytechnic Institute (branch) of North-Eastern Federal University in Yakutsk, Mirny, 678174, Russia, 3 NUST MISIS, 119049, Moscow, Russia.

 

For contacts:

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

Bibliography:

1. Westhuyzen P., Bouwer W., Jakins A. Current trends in the development of new or optimization of existing diamond processing plants, with focus on beneficiation. Journal of The Southern African Institute of Mining and Metallurgy. 2014, vol. 114, pp. 537—546.

2. Zlobin M. N. Sostoyanie i nekotorye puti razvitiya tekhnologii obogashcheniya almazosoderzhashchikh rud na predpriyatiyakh AK «ALROSA» [Status and some development paths of diamondbearing ore beneficiation technology at ALROSA enterprises], Moscow, Almazy, 2002, pp. 59—63.

3. Makhrachev A. F., Larionov N. P., Savitsky V. B. New directions in diamond-bearing raw material beneficiation technology at ALROSA enterprises. Gornyi Zhurnal. 2005, no. 7, pp. 65—68. [In Russ].

4. Makhrachev A. F. Improving the efficiency of reagent-collectors for diamond flotation based on vibratory jet magnetic activation. Materialy XXIII Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii «Nauchnye osnovy i praktika pererabotki rud i tekhnogennogo syr'ya» [Materials of the XXIII International Scientific and Technical Conference «Scientific foundations and practice of processing ores and man-made raw materials»], Ekaterinburg, 2018, pp. 122—126. [In Russ].

5. Mikhlin Yu. X-ray photoelectron spectroscopy in mineral processing studies. Applied Sciences. 2020, vol. 10, no. 15, article 5138. DOI: 10.3390/app10155138.

6. Zhang J., Kouznetsov D., Yub M. Improving the separation of diamond from gangue minerals. Minerals Engineering. 2012, vol. 36—38, pp. 168—171.

7. Shlyufman E. M. Status and prospects for the development of radiometric separation of diamonds. Gornyi Zhurnal. 2005, no. 7, pp. 102—105. [In Russ].

8. Makalin I. A., Ivanov A. V. Intensification of the X-ray luminescence separation process at the enterprises of ALROSA. Gornyi Zhurnal. 2010, no. 12, pp. 68—71. [In Russ].

9. Martynovich E. F., Mironov V. P. X-ray luminescence of diamonds and its use in the diamond mining industry. Izvestiya vuzov. Fizika. 2009, vol. 52, no. 12-3, pp. 202—210. [In Russ].

10. Morozov V. V., Chanturia V. A., Dvoichenkova G. P., Chanturia E. L., Podkamenny Yu. A. Selection of organic collectors in the composition of luminophore-containing reagents-modifiers of spectral-kinetic characteristics of diamonds. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2023, no. 2, pp. 123—133. [In Russ].

11. Chanturia V. A., Morozov V. V., Dvoichenkova G. P., Chanturia E. L., Podkamenny Y. A. Modification of diamond spectrum pattern using luminophore-containing agents with zinc and cadmium chalcogenides. Journal of Mining Science. 2022, vol. 58(4), pp. 599—609. DOI: 10.1134/ S1062739122040093.

12. Mironov V. P., Emelyanov A. S., Shabalin S. A., Bubyr E. V., Kazakov L. V., Martynovich E. F. X-Ray luminescence in diamonds and its application in industry. AIP Conference Proceedings. 2021, vol. 2392, no. 1, article 20010. DOI: 10.1063/5.0061972.

13. Kolosova O. A., Trineeva O. V., Sorokina A. A., Gudkova A. A. Study of morphological and anatomical-diagnostic features of Volga valerian raw materials by fluorescence microscopy. Pharmacy. 2021, vol. 70, no. 8, pp. 26—30. [In Russ]. DOI: 10.29296/25419218-2021-08-04.

14. Gonsales R., Vuds R., Eddins S. Tsifrovaya obrabotka izobrazheniy v srede Matlab [Digital image processing in the Matlab environment], Moscow, Tekhnosfera, 2006, 616 p.

15. Alekseenko V. V., Voronov D. V., Katashevtsev M. D., Pakhomovsky A. N. Study of the granulometric composition of emulsions using an optical microscope and the method of automated recognition of objects in a digital photograph. Proceedings of Irkutsk State Technical University. 2015, no. 2 (97), pp. 99—104. [In Russ].

16. Koval'chuk O. E. Povyshenie effektivnosti rentgenolyuminestsentnoy separatsii almazosoderzhashchikh kimberlitov na osnove modifitsirovaniya spektral'no-kineticheskikh kharakteristik almazov lyuminoforsoderzhashchimi kompozitsiyami [Improving the efficiency of X-ray luminescence separation of diamond-bearing kimberlites based on modifying the spectral-kinetic characteristics of diamonds with phosphor-containing compositions], Candidate’s thesis, Moscow, 2020, 23 p.

17. Liu L., Cheng G., Yu W., Yang Ch. Flotation collector preparation and evaluation of oil shale. Oil Shale. 2018, vol. 35, no. 3, pp. 242—253. DOI: 10.3176/oil.2018.3.04.

18. Khmelev V. N., Khmelev S. S., Golykh R. N., Barsukov R. V. Improving the efficiency of ultrasonic cavitation treatment of viscous and dispersed liquid media. Polzunovskiy vestnik. 2010, no. 3, pp. 321—325. [In Russ].

19. Pestryak I. V. Modeling and study of physicochemical processes in conditioning of circulating water. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2015, no. 4, pp. 143—150. [In Russ].

20. Kasomo R. M., Ombiro S., Rop B., Mutua N. M. Investigation and comparison of emulsified diesel oil and flomin C 9202 as a collector in the beneficiation of ultra-fine coal by agglo-flotation. International Journal of Oil, Gas and Coal Engineering. 2018, vol. 6, no. 4, pp. 74—80. DOI: 10.11648/j. ogce.201 80604.15.

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