Author 1:
Name & Surname: Kienko L. A.
Company: Institute of Mining, Far East Branch, Russian Academy of Sciences (Khabarovsk, Russia)
Work Position: Senior Researcher
Scientific Degree: Candidate of Engineering Sciences
Contacts: e-mail: kienkola@rambler.ru

Author 2:
Name & Surname: Voronova O. V.
Company: Institute of Mining, Far East Branch, Russian Academy of Sciences (Khabarovsk, Russia)
Work Position: Researcher

The article reports the overview of the engineering issues concerned with dressing of finely impregnated fluorite and zinc–fluorite ore in the Primorye. Integrated dressability of zinc–fluorite ore was tested using three ore specimens sampled in the Voznesensky ore province, with the content of zinc from 1.7 to 2.5% and fluorite from 17.3 to 22.78%. The samples typically contained moderate calcite: fluorite/calcite ratio was 1.61–3.64. The analysis involves two technology alternatives differing in the sequence of flotation of mineral phases. The authors have identified basic processing elements that ensure efficient transition from sulfhydryl collectors to oxyhydryl compounds. The joint analysis has shown that each of the proposed flow charts allows efficient ore dressing and production of two grade concentrates. Sphalerite recovery in concentrates with the zinc content of 39.04–47.91% reached 66.7–82.35%. The obtained fluorite concentrates satisfy all current requirements for grades FF-90 and FF-92: CaF₂ content is 90.53–92.12%, silicic anhydride is 2.96–2.4%. Fluorite recovery can reach 55.37–73.65%. Prospects for commercial-scale introduction of the developed technology are discussed.

1. Ryazantseva M. D., Shkurko E. I. Flyuority Primorya (Fluorites of Primorye). Moscow : Nedra, 1992. 156 p. 

2. Zhilin V. V., Saenko V. I. Predposylki vovlecheniya v pererabotku tsink-flyuoritovykh rud Voznesenskogo mestorozhdeniya (Preconditions of involving of zinc-fluorite Voznesenskoe deposit ores in processing). Gornyi Zhurnal = Mining Journal. 2000. No. 9. pp. 30–32. 

3. Kienko L. A., Voronova O. V. Otsenka perspektiv kompleksnoy pererabotki tsink-flyuoritovogo syrya Voznesenskogo rudnogo rayona (Assessment of prospects of complex processing of zinc-fluorite raw materials of Voznesensk ore region). Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh = Journal of Mining Science. 2012. No. 5. pp. 173–181. 

4. Samatova L. A., Kienko L. A., Voronova O. V., Pyusnina L. N. Razrabotka teoreticheskikh osnov selektivnoy flotatsii kaltsiysoderzhashchikh mineralov, vkhodyashchikh v sostav rud Primorskikh mestorozhdeniy (Development of theoretical basis of selective flotation of calcium-bearing minerals, included in composition of Primorye deposit ores). Gornyy Informatsionno-Analiticheskiy Byulleten = Mining Information-Analytical Bulletin. 2005. pp. 274–287. 

5. Kienko L. A., Samatova L. A., Voronova O. V., Chuyanov G. G. Problemy flotatsii karbonatno-flyuoritovykh rud Voznesenskogo rudnogo rayona v usloviyakh vodooborota (Problems of flotation of carbonate-fluorite ores of Voznesensk ore region in water-circulation conditions). Izvestiya vuzov. Gornyy zhurnal = Proceedings of universities. Mining journal. 2010. No. 8. pp. 124–129.