Journals →  Obogashchenie Rud →  2020 →  #6 →  Back

BENEFICIATION PROCESSES
ArticleName Research of the influence of material composition and size of iron quartzites of the Olenegorsk deposit on the results of dry magnetic separation
DOI 10.17580/or.2020.06.03
ArticleAuthor Tereshchenko S. V., Shibaeva D. N., Kompanchenko A. A., Alekseeva S. A.
ArticleAuthorData

Branch of the Murmansk Arctic State University (Apatity, Russia):

Tereshchenko S. V., Head of Chair, Doctor of Engineering Sciences, SerTereshchenko@mail.ru

 

Mining Institute of Kola Science Centre of RAS (Apatity, Russia):

Shibaeva D. N., Senior Researcher, Candidate of Engineering Sciences, Shibaeva_goi@mail.ru

Alekseeva S. A., Researcher, alekseeva@goi.kolasc.net.ru

 

Geological Institute of Kola Science Centre of RAS (Apatity, Russia):

Kompanchenko A. A., Researcher, Candidate of Geological and Mineralogical Sciences, komp-alena@yandex.ru

Abstract

On the example of a sample of ferruginous quartzites from the Olenegorskoye deposit, the possibility of preliminary concentration by dry magnetic separation (DMS) has been established. The mineralogical and petrographic studies have shown that, in terms of their textural and structural features and mineral composition, ferruginous quartzites may be divided into two types, differing in the amount of hematite included in their composition, which indicates the possibility of using DMS to generate the following three separation products: magnetite, hematite-magnetite, and rock. DMS with the use of a laboratory drum magnetic separator allowed selecting the upper size limit of 80 mm for lumps entering the separation. At the same time, 24.7 to 26.0 % of all waste and low-mineralized rocks with the mass fraction of Fetot of 4.51 to 6.07 % are transferred to the non-magnetic fraction during the separation of classes of –80+50 and –50+25 mm. For the size class of –25+10 mm, the yield and Fetot values are within the same limits. It has been shown that sulfidecontaining rocks and rocks of increased strength (with the strength coefficient of at least 23) are separated into the non-magnetic fraction. The strength of ferruginous quartzites does not exceed 20. This rock strength ratio confirms improved crushing and grinding efficiency. The possibility of separation of the magnetic fraction with the particle size of –80+25 mm into the following products has been established: the magnetite-hematite product (MF-1 + MF-2) with the mass fractions of Femagn 43.3% and Fehem 14.9 %, and the predominantly hematite product (MF-3 + MF-4) with the mass fractions of Femagn 1.1 % and Fehem 67.9 %.

keywords Ferruginous quartzites, preliminary concentration, dry magnetic separation, magnetic induction, magnetic fraction, nonmagnetic fraction, mineral strength
References

1. Wang X., Lv X., Cao X., Yuan Q., Wang Y., Liu W., Ruan B. Petrology and geochemistry of the banded iron formation of the Kuluketage block, Xinjiang, NW China: implication for BIF depositional setting. Resource Geology. 2016. Vol. 66, No. 4. pp. 313–334.
2. Ganno S., Tsozué D., Nono G. D. K., Tchouatcha M. S., Ngnotué T., Gamgne Takam R., Nzenti J. P. Geochemical constraints on the origin of banded iron formation–hosted iron ore from the Archaean Ntem Complex (Congo Craton) in the Meyomessi area, Southern Cameroon. Resource Geology. 2018. Vol. 68, No. 3. pp. 287–302.
3. Chi Fru E., Kilias S., Ivarsson M., Rattray J. E., Gkika K., McDonald I., He Q., Broman C. Sedimentary mechanisms of a modern banded iron formation on Milos island, Greece. Solid Earth. 2018. No. pp. 573–598.
4. Pozhilenko V. I., Gavrilenko B. V., Zhirov D. V., Zhabin S. V. Geology of ore districts of the Murmansk region. Apatity: Kola Science Centre of RAS, 2002. 359 p.
5. Ivanyuk G. Yu. Mineralogy and petrology of the deposits of the banded iron ore formation on the Kola Peninsula: dis. abstract for the degree of Doctor of Geological and Mineralogical Sciences. St. Petersburg, 2004. 39 p.
6. Ivanyuk G. Yu., Pripachkin P. V., Bazai A. V., Mikhailova Yu. A., Konoplyova N. G., Kalashnikov A. O. Banded iron-formation of the Fennoscandian shield (in memory of professor P. M. Goryainov). Trudy Fersmanovskoy Nauchnoy Sessii GI KNTs RAN. 2019. No. 16. pp. 216–221.
7. Olenegorsk GOK. State and prospects for the development of the raw material base. URL: https://olcon.ru/rus/about/strategy/index.phtml/ (accessed: 25.09.2020).
8. Opalev A. S., Biryukov V. V., Scherbakov A. V. Stadial obtaining of the magnetite concentrate during the development of power resource-saving technology of benefication of ferruginous quartzites on JSC «OLCON». Gorny Informatsionno-analiticheskiy Byulleten'. 2015. No. 11. pp. 60–62.
9. Khokhulya M. S., Opalev A. S., Rukhlenko E. D., Fomin A. V. Production of magnetite-hematite concentrate from ferruginous quartzites and warehoused tailings based on mineralogy and technology studies. Gorny Informatsionnoanaliticheskiy Byulleten'. 2017. No. 4. pp. 259–271.
10. Opalev A. S., Scherbakov A. V. Development and implementation of energy saving technology of beneficiation of ferruginous quartzites in the JSC «OLKON». Trudy Kolskogo Nauchnogo Tsentra RAN. 2015. No. 3. pp. 176–184.
11. Tereshchenko S. V., Denisov G. A., Marchevskaya V. V. Radiometric methods of testing and separation of mineral raw materials. St. Petersburg: MANEB, 2005. 264 p.
12. Zong Q. X., Fu L. Z., Bo L. Variables and applications on dry magnetic separator. E3S Web of Conferences. 2018. Vol. 53. Proc. of the 3rd International conference on advances in energy and environment research (ICAEER 2018). DOI: 10.1051/e3sconf/20185302019.
13. Shibaeva D. N., Tereshchenko S. V. Studies on the possibility of pre-concentration of low-iron ores of the Kovdor deposit. Obogashchenie Rud. 2019. No. 5. pp. 24–28. DOI: 10.17580/or.2019.05.05.

Language of full-text russian
Full content Buy
Back