| Annotation |
Ore from the Egitinskoye deposit is processed at the Egitinsky GOK Plus concentrating
plant according to a technological scheme including: three-stage crushing,
two-stage grinding, preliminary and verification classification, flotation processing,
thickening, filtration and drying of concentrates. The end (commercial) products obtained
at the processing plant during the processing of ore are fluorite concentrates of
the FF-95 and FF-97 grades that meet the requirements of GOST 29219-91 “Fluoric
acid and ceramic concentrates”. Obtaining high-grade fluorite concentrates during
the enrichment of these types of ores is complicated due to the close physical and
chemical properties of fluorite and carbonate minerals (calcite, dolomite, etc.), as well
as a decrease in the carbonate module in the original ore as the deposit is developed.
Considering these circumstances, it is required to determine during grinding not only
the degree of fluorite opening, but also the degree of opening of carbonate minerals. The object of research is the carbonate-fluorite ores of the Egitinskoye deposit. The
subject of research is the process of opening minerals at the grinding stage. The
purpose of the research is to determine the optimal degree of grinding, which ensures
an increase in the efficiency of flotation enrichment of carbonate-fluorite ore from the
Egitinskoye deposit. Laboratory research to identify the optimal degree of grinding
were carried out in two ways: according to the results of technological indicators of
flotation tests and according to the results of studying the degree of disclosure of
minerals (fluorite and calcite), depending on the different degree of grinding of the
ore. When carrying out flotation tests, it was found that a sufficient degree of selective
separation of both fluorite and carbonate minerals occurs at the exit of 70 % of the
finished size class (-0.071 mm). According to the results of the study of the degree of
disclosure of minerals, the optimal degree of grinding was revealed with a yield of 70
to 75 % of the class ‒ 0.071 mm. |
| Key words |
fluorite, carbonate minerals,deposit, mineral disclosure,carbonate module, degree ofgrinding, flotation, laboratoryresearch, granulometricanalysis, mineralogicalanalysis |
| References |
1. Aksenova G.Ya. Quantitative assessment of the degree of mineral disclosure during ore grinding. Ore
enrichment, no. 3, pp. 14–18, 2005. (In Rus.).
2. Fatyanov A. V., Nikitina L. G., Glotova E. V. Technology of fluorite ore enrichment: monograph.
Novosibirsk: Nauka, 2006. (In Rus.).
3. Avdokhin V. M. Fundamentals of mineral enrichment: in 2 vol. Vol. 1: Enrichment processes. Moscow:
Mining Book, 2008. (In Rus.).
4. Astakhov R. Ya., Nikiforov K. A., Mokhosoev M. V. Selective flotation of fluorite carbonate ores.
Novosibirsk: Nauka, 1983. (In Rus.).
5. Marchenko A. A., Zashikhin A. V., Voskresenskaya E. N., Yuzhannikov A.Yu. Development of technology
for the enrichment of fluorite ores of the Nizhne-Berezovsky deposit (Krasnoyarsk Krai). Successes of modern
natural science, no. 12, pp. 20–25, 2013. (In Rus.).
6. Gordienko P. S., Yarusova S. B., Krysenko G. F. Processing of fluorite-containing mineral raw materials
and waste of the Yaroslavl Mining and Processing Plant: monograph. Yaroslavl: RIOR, 2018. (In Rus.).
7. Kuptsova A. V., Mezentseva O. P., Khramov A. N. Application of mineral-analytical methods for
determining the parameters of mineral disclosure. Mining Journal, no. 11, pp. 35–39, 2014. (In Rus.).
8. Smolyakov A. R. Opening of minerals during ore grinding. MIAB Mining informational and analytical
bulletin (scientific and technical journal), no. 8, pp. 224–234, 2007. (In Rus.).
9. Lysenko A. A. Kutlin B. A. Khramov A. N. Shchekotov N. D. Preliminary enrichment of ores at the
enterprises of “Mongolrostsvetmet” (Mongolia). Mining Journal, no. 2, рр. 28–30, 2000. (In Rus.).
10. Badamsurzn X., Kutlin B. A., Boldbaatar M. Improving ore enrichment technology at the Bor-Undur
Mining and Processing Plant. Mining Journal, no. 3, рр. 16–19, 2003. (In Rus.).
11. Khramov A. N. Algorithm for investigating the disclosure of valuable components and its technological
possibilities of application in ore crushing. Bulletin of the Trans-Baikal State University, vol. 81, no. 2, pp. 36–41,
2012. (In Rus.).
12. Khramov A. N., Kostromina I. V. Method for determining optimal parameters of ore preparation
processes. Bulletin of the Trans-Baikal State University, vol. 23, no. 9, pp. 45–52, 2017. (In Rus.).
13. Myazin V. P., Khramov A. N. Ircreasing efficiency of fluor-spar raw materials processing tehnology by
perfection of preliminary enrichment. Bulletin of Transbaikal State University, vol. 70, no. 3, рр. 40-45, 2011.
(In Rus.).
14. Barry A. Wills, James Finch. Technology of mineral processing. 8th ed. 2016. (In Eng.).
15. Wills B. A., Barley R. V. Processing of minerals at the crossroads. Problems and prospects. New York:
Springer, 1986. (In Eng.). |
