JUSTIFICATION OF MAGNETIC SEPARATION APPLICATION IN PROCESSING OF INITIAL GOLD SAND FROM THE BOLOTISTY STREAM PRIMARYAND-PLACER DEPOSIT, LOWER AMUR REGION
For the sake of gold production capacity maintenance and improvement, subsoil users have to exploit poor and rebellious ore placers or waste, which often feature increased content of fine gold extractable using special technology and equipment. The causes of gold loss in sluices are mainly: quality of circulation water for sand washing; higher content of silt–clay particles in initial sand; associated heavy minerals; morphology of gold; design factors of processing equipment. Efficiency of gold recovery is greatly affected by the increased content of heavy associated components in placer sand. For this reason, preliminary removal of magnetic and electromagnetic minerals from dressing circuit will reduces losses and improves total economic performance of mining. Minerals of high specific gravity, such as magnetite, ilmenite, chromite, cassiterite and tetradymite accumulate and compact on sluices, preventing from deposition of noble metal particles. At the Bolotisty Stream placer deposit, integrated performance evaluation is completed for gold washing machine PGSH-50, with the analysis of heavy metal yield in concentrate, as well as in tailings of deep and shallow filling gateways; furthermore, the technology is developed for recovery of magnetic fractions right within operation cycle of the washing machine. The proposed gold sand processing circuit both increases gold recovery, due to magnetite removal from processing and allows concurrent extraction of magnetic minerals.
For citation: Alekseev V. S., Banshchikova T. S., Seryy R. S. Justification of magnetic separation application in processing of initial gold sand from the Bolotisty Stream primary-and-placer deposit, Lower Amur Region. MIAB. Mining Inf. Anal. Bull. 2019;(8):190-197. [In Russ]. DOI: 10.25018/02361493-2019-08-0-190-197.
: 622.75: 622.342.1DOI
: Alekseev V. S., Banshchikova T. S., Seryy R. S.
V.S. Alekseev, Cand. Sci. (Eng.), Senior Researcher, firstname.lastname@example.org,
T.S. Banshchikova, Senior Researcher,
R.S. Seryy, Cand. Sci. (Eng.), Senior Researcher,
Mining Institute, Far Eastern Branch of Russian Academy of Sciences,
680000, Khabarovsk, Russia.
Corresponding author: V.S. Alekseev, e-mail: email@example.com.
Corresponding author: B.F. Simonov, e-mail: Simonov_bf@mail.ru.Key words
Gold placer, magnetic minerals, fine gold, gold loss, gold extraction, washing machine, deep and shallow filling gateways, magnetic separation.References
1. Ivanov V. V., Zambrzhinskiy A. I., Molchanov G. B. Features of the gold–bismuth–tellurium mineralization Sikhote–Alin. Sovremennye problemy metallogenii. Materialy nauchnoy konferentsii, posvyashchennoy 90-letiyu akademika KH.M. Abdullaeva. Tashkent, 2012, pp. 176—178. [In Russ].
2. Litvintsev V. S., Banshchikova T. S., Ponomarchuk G. P. Material constitution and operation of primary-and-placer deposit of the Bolotisty Stream, Khabarovsk Territory. Marksheyderiya i nedropol'zovanie. 2011, no 1, pp. 35—38. [In Russ].
3. Seryy R. S., Alekseev V. S., Sas P. P. Performance of sluice washers in gold placer mining. Tsvetnye metally. 2017, no 2, pp. 31—35. DOI: 10.17580/tsm.2017.02.04. [In Russ].
4. Mamaev Yu. A., Litvintsev V. S., Ponomarchuk G. P. Tekhnogennye rossypi blagorodnykh metallov Dal'nevostochnogo regiona Rossii i ikh ratsional'noe osvoenie [Noble metal placer mining waste and sound management in the Russian Far East], Moscow, Izd-vo «Gornaya kniga», 2010, 309 p.
5. Litvintsev V. S., Banshchikova T. S., Leonenko N. A. et al. Effective methods for gold recovery from mining wastes at placers. Journal of Mining Science, 2012, Vol. 48, no 1, pp. 198—202. DOI: 10.1134/S1062739148010224.
6. Sas P. P. Integrated evaluation of process gold loss and intensification of gold extraction on washing machine PGSH-II-50. Problemy nedropol'zovaniya. 2014, no 2, pp. 185—189. [In Russ].
7. Litvintsev V. S., Sas P. P., Pulyaevsky A. M. Optimization of flushing sluice flow in hydrohoist gold washing machines. Journal of Mining Science, 2012, Vol. 48, no 6, pp. 1054—1057. DOI: 10.1134/S1062739148060147.
8. Litvintsev V. S. Resource potential of placer mining waste. Journal of Mining Science, 2013, no 49, pp. 99—105. DOI: 10.1134/S1062739149010127.
9. Mirzekhanov G. S., Mirzekhanova Z. G. Resursnyy potentsial tekhnogennykh obrazovaniy rossypnykh mestorozhdeniy zolota [Resource potential of gold placer mining waste], Moscow, MAKS Press, 2013, 288 p.
10. Oberthuer T., Melcher F., Weiser T. W. Detrital platinum-group minerals and gold in placers of southeastern Samar Island, Philippines. Canadian Mineralogist, 2017, Vol. 55(3), pp. 45—62.
11. MacFarlane K. E., Nordling M. G. Yukon Exploration and Geology Overview 2013. Whitehorse: Canada (Yukon Geological Survey), 2014. 80 p.
12. Van Loon S., Bond J. D. Yukon Placer Mining Industry Report 2010—2014. Whitehorse: Canada (Yukon Geological Survey), 2014. 230 p.
13. Litvintsev V. S., Sas P. P. Current state and main directions of innovative development of placer gold mining in Far East federal district. E3S Web of Conferences. 2018, Vol. 56. DOI: 10.1051/e3sconf/20185604004.