Coupling mineralogy with physicochemical parameters in view copper flotation efficiency improvement

• Autorzy: Naumov Dejan , Stamenov Lachezar , Gaydardzhiev Stoyan , Bouzahzah Hassan

Identyfikatory

DOI

10.5277/ppmp18187

• Języki publikacji: EN

Abstrakty

EN

The Chelopech epithermal arsenic bearing high-sulphidation, copper-gold deposit located in Bulgaria is often considered as the richest European gold deposit. Selected physicochemical parameters have been measured at key flotation streams inside the processing plant. Sampling campaign has followed with samples being submitted to chemical and mineral liberation analyses. A quantitative analysis has enabled to link copper flotation response to the type of copper bearing minerals and physiochemical parameters such as redox potential (Eh), dissolved oxygen (DO), EDTA extractable Cu and Fe. Data from the mineral liberation analysis (MLA) have highlighted an important process- relevant information explaining the variable floatability in different particle size ranges. A low chalcopyrite recovery can be linked to the non-sufficient amount of dissolved oxygen inside the copper selective flotation. Given the finely-disseminated copper bearing minerals, copper losses due to particle locking could be suggested as well.

Słowa kluczowe

EN

copper ore; flotation; quantitative mineralogy; physicochemical factors

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 3
• Strony: 701--710
• Opis fizyczny: Bibliogr. 9 poz., rys. kolor.

Twórcy

autor

Naumov Dejan

• University of Liege

autor

Stamenov Lachezar

• Dundee Precious Metals

autor

Gaydardzhiev Stoyan

• University of Liege, Allée de la Decouverte 13, Sart-Tilman, B52, 4000 Liege, Belgium

autor

Bouzahzah Hassan

• University of Liege

Bibliografia

• BONEV, I., KERESTEDJIAN, T., ATANASSOVA, R. and ANDREW C., 2002. Morphogenesis and composition of native gold in the Chelopech volcanic-hosted Au-Cu epithermal deposit, Srednogorie zone, Bulgaria, Miner. Depos. 37, 6–7, 614–629.
• BULATOVIC, S., 2007. Summary for Policymakers, in Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores, Elsevier Science & Technology Books, Cambridge, 1- 443.
• CHAMBEFORT, I., MORITZ, R., 2014. Subaqueous environment and volcanic evolution of the Late Cretaceous Chelopech Au-Cu epithermal deposit, Bulgaria, J. Volcanol. Geotherm. Res., 289, 1–13.
• CHEN, X., SEAMAN, D., PENG, Y., BRADSHAW, D., 2014. Importance of oxidation during regrinding of rougher flotation concentrates with a high content of sulphides, Miner. Eng., 66, 165–172.
• CHEN, X., SEAMAN, D., PENG, Y., BRADSHAW, D., 2013. Effect of regrinding conditions on pyrite flotation in the presence of copper ions, Int. J. Miner. Process. 125, 129–136.
• JAVADI, A., 2013. Sulphide Mineral Flotation - a new insides into oxidation mechanisms. Licenciate thesis, Universitetstryckeriet Luleå Sweden, 162 p.
• KOUZMANOV, K., MORITZ, R., VON QUADT, A., CHIARADIA, M., PEYTCHEVA, I., FONTIGNIE, D., RAMBOZ, C., BOGDANOV, K., 2009. Late Cretaceous porphyry Cu and epithermal Cu-Au association in the Southern Panagyurishte District, Bulgaria: The paired Vlaykov Vruh and Elshitsa deposits, Miner. Depos. 44, 6, 611–646
• RUMBALL, J., RICHMOND, G., 1996. Measurement of oxidation in a base metal flotation circuit by selective leaching with EDTA, Int. J. Miner. Process. 48, 1-2, 1-20
• STRASHIMIROV, S., PETRUNOV, R., KANAZIRSKI, M., 2002. Porphyry-copper mineralisation in the central Srednogorie zone, Bulgaria, Miner. Depos. 37, 6–7, 587–598.