Increase in the Free Finely-Dispersed Gold Recovery in the Flotation Cycle

• Autorzy: Toktar Gulmira , Bakrayeva Akbota , Abdyldayev Nurgali , Banks Graig E. , Kubaizhanov Alibek

Identyfikatory

DOI

10.12911/22998993/156002

• Języki publikacji: EN

Abstrakty

EN

This article presents the results of a comparative study for the increase in the free finely dispersed gold recovery from the gold-bearing ore produced in a deposit in Kazakhstan. The following minerals were identified in the sample under X-ray phase analysis: chalcopyrite and pyrite, as well as in a finely disseminated state in silicate minerals. Gold in the ore is present mainly (40.09%) in the free form under the results of phase analysis. Flotation tests of ore beneficiation were performed in FML-1 and FML-3 flotation machines with chamber volumes of 1.0 and 3.0 liters. A flotation combined concentrate with a gold content of 15.3 g/t was obtained (concentrate yield 9.45%), with gold recovery into concentrate 82.79% in the optimal mode: the grind of 90% in the class -0.071 mm; consumption of reagents: C7 foaming agent – 30 and 60 g/t, sodium butyl xanthate – 60 and 120 g/t; the time of the main flotation – 10 minutes, the control flotation – 7 minutes, at pH = 9. Flotation tailings contained 0.33 g/t of gold. The recovery showed a fairly high 84.42% (yield of the total concentrate 20.93%) with the gold content of 7.1 g/t with the use of a sulfidizing agent (Na₂S) and additional dispersion of the pulp at pH = 9.0. A gold-bearing concentrate was obtained containing 4.0 g/t Au at a fineness of -0.05 mm and 6.8 g/t Au at a fineness of +0.05 mm. The beneficiation of the pulp with a fineness of +0.05 mm gave the recovery into the final concentrate equal to 89.94%.

Słowa kluczowe

EN

hydrometallurgy; ore; recovery; free finely dispersed gold; flotation; sulfidiser; pulp dispersion

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2023
• Tom: Vol. 24, nr 1
• Strony: 115--119
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Toktar Gulmira

• Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, 29/33 Shevchenko Str., Almaty 050010, Kazakhstan

• https://orcid.org/0000-0003-4110-9013

autor

Bakrayeva Akbota

• Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, 29/33 Shevchenko Str., Almaty 050010, Kazakhstan

• https://orcid.org/0000-0002-2062-9573

autor

Abdyldayev Nurgali

• Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, 29/33 Shevchenko Str., Almaty 050010, Kazakhstan

• https://orcid.org/0000-0001-8145-5741

autor

Banks Graig E.

• Manchester Metropolitan University, All Saints, All Saints Building, Manchester, M15 6BH, United Kingdom

autor

Kubaizhanov Alibek

• Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, 29/33 Shevchenko Str., Almaty 050010, Kazakhstan

• https://orcid.org/0000-0002-3112-6840

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).