Leaching of gold-containing ores with application of oxidation activators
DOI:
https://doi.org/10.31643/2019/6445.23Keywords:
gold-bearing rock, leaching, gravity concentrate, gravity tailings, recovery, oxidation activator.Abstract
The Article presents the results of studies conducted to process gold-bearing rocks from one of the fields in Kazakhstan. We studied the phase chemical and mineral composition of the ore using semi-quantitative X-ray fluorescent, chemical (assay), electron raster and rational (phase) analyzes. Wefound that the test sample contained 1.4 g/t Au and 0.14 g/t Ag. The granulometric analysis showed that the main gold (36.51%) was concentrated in a class of -2.5 +1.25 mmsize, with 1.42 g/t gold content. The main components of the initial sample composition were quartz 38.9%, albite 20.3%, pyrite 5.8%. we studied thegravity recovery possibility of gold-bearing ore using laboratory equipment, i.e. Knelson KS-MD 3 centrifugal concentrator. We obtained a gold-containing concentrate with 6.04 g/t gold content on a centrifugal concentrator with extraction of 52.65%, and 0,82 g/t gold in gravity tailingsunder the one-stage recovery flow sheet. We determined the optimal leaching parameters for the recovery products (gravity concentrate and gravity tailings) using various oxidation activators. The gold recovery degree was 77.3%with direct gravity concentrate cyanidation, and 85.7%with preliminary oxidation using calcium hypochlorite increasing the gold recoverydegree by 8.4%, when leaching the gravity tailingsusing calcium hypochlorite -73.1%, sodium peroxide - 75.6%, Ascor oxidation activator (AS-45102) - 71.9%.
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Algebraistova N.K., Alekseyeva E.A., Kolyago E.K. Mineralogiya i tekhnologiya obogashcheniya lezhalykh khvostov Artemovskoy ZIF (Mineralogy and technology of recoveryof old tailings of Artyomovsk GRF)// Doklad na simp. «Nedelya gornyaka» («Miner's week»). Mosсow, 2000. 41-48. (in Russ.).
Meretukov M. A., Turin K. K. Povedeniye zolota v khvostovykh otvalakh (Gold's behavior in tailings) // Tsvetnyye metally= Non-ferrous metals. 2011. 7. 27-31.(in Russ.).
Erdenova M. B., Koyzhanova A. K., Kamalov E. M., Abdyldayev N. N., Abubakriyev A.T. Doizvlecheniye zolota iz otkhodov pererabotki zolotosoderzhashchikh rud kazakhstana (Additional recovery of gold from waste after processing of gold-containing ores of Kazakhstan.)// Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ.2018.305(2),12–20. (in Russ.). https://doi.org/10.31643/2018/6445.2
KoyzhanovaA. K., Arystanova G. A., Sedelnikova G. V., Esimova D. M. Issledovaniye biogidrometallurgicheskoy tekhnologii izvlecheniya zolota iz khvostov sorbtsii zolotoizvlekatelnoy fabriki (Investigation of biohydrometallurgical technology of extracting gold from the sorption tailings of a gold recovery plant) // Tsvetnyye metally = Non-ferrous metals. 2016. 9. 52-56. (in Russ.). https://doi.org/10.17580/tsm.2016.09.07
Mikhaylova A. N., Mineyev G.G., Gudkov S. S. Ukrupnenno-laboratornyye ispytaniya protsessa biokhimicheskogo okisleniya sulfidnoy zolotosoderzhashchey rudy v usloviyakh kuchnogo vyshchelachivaniya (Integratedlaboratory tests of sulfide gold ore biochemical oxidation under heap leaching)//Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta =Bulletin of the Irkutsk State Technical University. 2012. 6. 116. (in Russ.).
Arifulov Ch. Kh., Arsentyeva I. V., Ozherelyeva A.V. Zolotorudnyye mestorozhdeniya v riftogennykh chernoslantsevykh otlozheniyakh Yuzhnogo Urala(Gold deposits in rift black-shale sediments of the Southern Urals). Moscow: CRGRINNM. 2013. 105. (in Russ.).
In-Situ Leaching (ICL) /Innovations in Gold and Silver Recovery. Phase IV.-USA: Randol Int. Ltd. 1992.3. 1329-1336. (in Eng).
Nitsenko A. V., Burabayeva N. M., Trebukhov S. A., Bolatbekov B. B. Izucheniye protsessa vozgonki myshiaka iz sinteticheskogo sulfoarsenida medi pri ponizhennom davlenii (Study of the process of arsenic sublimation from synthetic copper sulphoarsenide (CuAsS) under reduced pressure)// Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ. 2018.1. 44-50. (in Russ.). https://doi.org/10.31643/2018/166445
Algebraistova N. K., Samorodskiy P. N., Kolotushkin D. M., Prokopyev I. V. Tekhnologiya izvlecheniya zolota iz tekhnogennogo zolotosoderzhashchego Syria (Technology of gold recovery from gold-bearing technogenic raw material) // Obogashcheniye rud = Ore benefication. 2018. 1. 31–35. (in Russ.). https://doi.org/10.17580/or.2018.01.06
Bocharov V. A., Ignatkina V. A., Abryutin D. V. Tekhnologiya pererabotki zolotosoderzhashchego Syria (Technology of processing gold-bearing rocks.) Moscow: Pub. house MISaA. 2011.326. (in Russ.).
Kenzhaliyev B. K., Berkinbayeva A. N., DosymbayevaZ. D., Sharipov R. Kh. Extraction Of Non-Ferrous And Noble Metals From Mill Tailing By Solutions In The Presence Of Oxidizing Agents // International Journal of Engineering and Applied Sciences (IJEAS).2017. 4. 8. 93.(in Eng).
Kenzhaliyev B. K., Koyzhanova A. K., Abdykirova G. ZH., Kamalov E. M., Magomedov D. R. Vyshchelachivaniye zolotosoderzhashchego syr'ya s ispol'zovaniyem okislitelya (Gold leaching-bearing raw materials using an oxidizing agent) Materialy Mezhdunarodnoy nauchno-prakticheskoy konferentsii «Effektivnyye tekhnologii proizvodstva tsvetnykh, redkikh i blagorodnykh metallov» («Efficient production technology of non-ferrous, rare and precious metals»)Almaty. 2018.187. (in Russ.). https://doi.org/10.31643/2018-7.14
Erdenova M., Kenzhaliyev B., Koizhanova A., Temirova S., Abdyldaev N. Gold recoveryfrom man-made mineral raw materials by methods of flotation recoveryand cyaning. International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEMVolume 18, Issue 1.4, 18th International Multidisciplinary Scientific Geoconference, SGEM 2018; Albena; Bulgaria. 2018. 67-74. (in Eng).
Zaizheng Dong,Yimin Zhu, Yuexin Han, Xiaotian GuKai Jiang.Study of pyrite oxidation with chlorine dioxide under mild conditions// Minerals Engineering. 2019.106-114. (in Eng). https://doi.org/10.1016/j.mineng.2019.01.018
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Copyright (c) 2019 Abubakriev, А., Коizhanova, А., Маgomedov, D., Еrdenova, М., & Abdyldaev, N.
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