Extraction of gold from low-sulfide gold-bearing ores by beneficiating method using a pressure generator for pulp microaeration
DOI:
https://doi.org/10.31643/2023/6445.19Keywords:
gold-bearing low-sulfide ore, mineral composition, phase composition, gravitational beneficiation, gold extraction, concentrate, tailings, oxidizing agentAbstract
Abstract
Research results on the study of the material composition of low-sulfide gold-bearing ore from the East Kazakhstan deposit are presented. The main non-metallic minerals of the original sample and beneficiation products include quartz, chlorite (clinochlore), carbonates (calcite and dolomite). Pyrite is present predominantly in the form of cubic crystals, sometimes in the form of clusters. The grain size is from 0.03 to 0.40.5 mm, the size of the clusters reaches several mm. Iron oxides (goethite, hydrogoethite) were formed on pyrite, possibly magnetite and ilmenite. The assay test found that the test sample contains 6.04 g/t Au and 7.9 g/t Ag. The content of sulfide minerals is 11.81%. A significant part of gold (85.51%) is in a finely disseminated state in sulfides, as well as in rock-forming minerals 1.22%. The paper presents the results of laboratory studies of the gold- ore beneficiation ability using gravity concentration processes. Gravity enrichment tests were performed on laboratory equipment: Knelson KS-MD 3 centrifugal concentrator, SKO-05 concentration table, and a two-chamber diaphragm jig (OML TsNIGRI type (jig of Central Geological Research Institute for Nonferrous and Precious Metals)). The obtained results of ore beneficiation on the concentration table show the possibility of obtaining a gravity concentrate with a gold grade of 48.9 g/t with a gold recovery of 40.08%. When separating the gravity concentrate on a jig, the gold extraction was 31.6% at a content of 51.4 g/t. It was found that that according to a single-stage beneficiation scheme in a centrifugal concentrator, a gold-bearing concentrate with a gold content of 58.3 g/t was obtained with a recovery of 80.6%. The dependence of the gold extraction and its content in the gravity concentrate on the output at the Knelson centrifugal concentrator is shown. The results of ore flotation beneficiation show the possibility of obtaining waste grade flotation tailings with a gold grade of 0.8 g/t. The extraction of gold into the combined concentrate, with a gold content of 49.7 g/t, is 88.88%.
Downloads
References
Kogotkova YeA, Volarovich GP, Sedel'nikova GV. Rol' melkikh zolotorudnykh mestorozhdeniy v rasshirenii mineral'no-syr'yevoy bazy zolotodobyvayushchey promyshlennosti zarubezhnykh stran. [The role of small gold deposits in the expansion of the mineral resource base of the gold mining industry in foreign countries]Transactions of TsNIGRI. M. 1985:43-47. (in Russ.).
Kaumetova DS, Koizhanova AK, Absalyamov KhK, Magomedov DR, Banks CE. Studies of the rate of gold sorption by the AM-2B anionite from cyanide-alkaline solutions. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources.2022;320(1):88-94. https://doi.org/10.31643/2022/6445.10
Yevdokimov SI, Kazimirova YeM, Solodenko AA. Vybor skhemy i oborudovaniya dlya obogashcheniya zolotosoderzhashchey rudy novogo mestorozhdeniya [Selection of the scheme and equipment for the enrichment of gold ore of the new deposit]. Gornyy information-analytical bulletin of MSTU. 2004;11:318-322. (in Russ.).
Bogdanovich AV, FedotovKV. Osnovnyye tendentsii razvitiya tekhniki i tekhnologii gravitatsionnogo obogashcheniya peskov i tonkovkraplennykh rud. [Main trends in the development of technology and technology of gravitational enrichment of sand and finely disseminated ores]. Mining Journal.2007;2:51-57. (in Russ.).
Bobokhonov BA, Rabiyev BR, Boboyev IR. «Spetsial'nyy vypusk» Tekhnologii pererabotki zolotosoderzhashchikh rud. [Technologies for processing goldbearing ores]. Gornyy zhurnal. 2012;7:45-50. (in Russ.).
Wyslouzil HE. Evaluation of the Kelsey centrifugal jig at Rio Kemptville Tin. 22nd Annual Meeting of the Canadian Mineral Processors. 1990:461-472.
Walklate JR, Fourie PJ. A history of gravity separation at Richards Bay Minerals. The Journal of the Southern African Institute of Mining and Metallurgy. 2006;106:741-748.
Adams MD. Gold ore processing. Project development and operations. 2nd ed. Elsevier Science, 2016.p.980
Algebraistova NK, Ryumin AI, Sazonov AI. Pererabotka zolotosoderzhashchikh produktov s ispol'zovaniyem kontsentratorov Knelson.Tsvetnyye metally. 2000;2:15-18.
Myazin VP, Litvintsev SA. Povysheniye effektivnosti gravitatsionnogo izvlecheniya zoloto iz kompleksnykh zolotopolimetallicheskikh rud. [Increasing the efficiency of gravitational extraction of gold from complex gold-polymetallic ores]. MATERIALS of the XXIII International Scientific and Technical Conference "Scientific Basis and Practice of Processing Ores and Technogenic Raw Materials" Ekaterinburg. April 10-13. 2018. p.419(in Russ.).
Algebraistova NK, Makshanin AV, Burdakova YeA, Samorodskiy PN, Markova AS. Razrabotka stadial'noy gravitatsionnoy skhemy izvlecheniya blagorodnykh metallov. [Development of the stadial gravitational scheme for the extraction of precious metals]. Ore dressing. 2015;2:3-8. (in Russ.).
Luk'yanov KV, Semenikhin DN. Metodika opredeleniya gravitatsionno izvlekayemykh form zolota i yeye prakticheskaya realizatsiya dlya rudnykh ob"yektov. [Methods for determining the gravitationally recoverable forms of gold and its practical implementation for ore objects]. MATERIALS of the XXIII International Scientific and Technical Conference "Scientific Basis and Practice of Processing Ores and Technogenic Raw Materials" -Ekaterinburg April 10-13. 2018:p.103. (in Russ.).
Gupta A, Yan D. Mineral processing design and operations. An introduction. 2nd ed. Elsevier.2016. p.882
Soshkin GS. Vaniyev ESH, Kotlyarov VV, Borodin YeV. Upravleniye gravitatsionnym protsessom obogashcheniya zolotosoderzhashchikh sul'fidnykh rud.Tsvetnyye metally. 2018;3:8-13.
Algebraistova NK, Gol'sman DA, Kolotushkin DM, Prokop'yev IV. Tekhnologicheskaya otsenka lezhalykh khvostov pererabotki zolotosoderzhashchey malosul'fidnoy rudy.Tsvetnyye metally. 2018;5:25-30.
Myrzaliyev BM, Nogayeva KA, Molmakova MS. Issledovaniye gravitatsionnogo obogashcheniya rudy mestorozhdeniya «Shiral'dzhin».Izvestiya
Kyrgyzskogo gosudarstvennogo tekhnicheskogo universiteta im. I. Razzakova. 2016;3,1(39):277-282.
Pelikh VV, Salov VM. Spetsifika primeneniya tsentrobezhnykh separatorov Knelson s periodicheskoy razgruzkoy.Vestnik IrGTU. 2015;12(107):229-235.
Chugayev LV. Metallurgiya blagorodnykh metallov. Moskva.: Metallurgiya.1987:34-103.
Abdykirova GZH, Kenzhaliyev BK, Koizhanova AK, Magomedov DR. Issledovaniye obogatimosti malosul'fidnoy zolotokvartsevoy rudy.Obogashcheniye rud. 2020;3:14-18. https://doi.org/10.17580/or.2020.03.03
Chubarov AV, Belousova NV, Drozdov SV, Maksimenko VV. Predvaritel'noye okisleniye biokeka v tekhnologii pererabotki sul'fidnykh zolotosoderzhashchikh rud i kontsentratov.Tsvetnyye metally. 2010;1:20-23.
Koizhanova AK, Kenzhaliyev BK, Kul'deyev YeI, Kamalov EM. Issledovaniya tekhnologii izvlecheniya zolota iz otrabotannykh shtabeley rudy kuchnogo vyshchelachivaniya. Obogashcheniye rud. 2019;3:54-59. https://doi.org/10.17580/or.2019.03.09
Wang X, Li Q, Liao Q, Yan Y, Xia J, Lin Q, Wang Q, Liang Y. Arsenic(III) biotransformation to tooeleite associated with the oxidation of Fe(II) via Acidithiobacillus ferrooxidans (2020) Chemosphere, 248, articleNo 126080
Zhao HF, Yang HY, Tong L,Zhang Q, Kong Y. Biooxidation-thiosulfate leaching of refractory gold concentrate International Journal of Minerals, Metallurgy,and Materials. 2020;24(8,1):1075-1082
Yessengaziyev AM, Barmenshinova MB, Bilyalova SM, Mukhanova AA, Muhamedilova АМ. Study of the stability of the emulsion of ultramicroheterogeneous flotation reagents obtained by the method of ultrasonic dispersion. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources. 2020;3(314):65-75.
Koizhanova AK, Kenzhaliev BK, Bisengalieva MR, Mukusheva AS, GogolDB, Abdyldaev NN, Magomedov DR. Calculation of Thermodynamic and Structural Characteristics of Gold and Silver Solvate Complexes. Russian Journal of Inorganic Chemistry. 2020;65(7):1051-1060. https://doi.org/10.1134/S0036023620070116
Koizhanova A, Osipovskaya L, Erdenova M. Study of precious metals extraction recovery from technogenic WASTES. 12th International Multidisciplinary Scientific Geoconference, SGEM.2012;I:843-846.
Koizhanova AK, Berkinbayeva AN, SedelnikovaGV, KenzhaliyevBK, AzlanMN,MagomedovDR, Efremova (Dyo) YM. Research of biochemical gold recovery method using high-arsenic raw materials. Metalurgija. 2021;60(3,4):423-426.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Toktar, G., Magomedov, D., Коizhanova A., Abdyldaev, N., & Bakraeva, A.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 Unported License.
