Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
INFLUENCE OF SELECTED FROTHERS ON PRE-FLOTATION OF THE KUPFERSHIEFER ORE Magdalena Duchnowska1, Alicja Bakalarz1, Andrzej Luszczkiewicz1, Jan Drzymala1, Przemyslaw B. Kowalczuk1, Andrzej Konieczny2, Witold Pawlos2 1 Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland T: (+48)713206864, E: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] 2 Division of Concentrators, KGHM Polska Miedz S.A., Kopalniana 1, 59-101 Polkowice, Poland E: [email protected]; [email protected] ABSTRACT A pre-flotation process of the Kupferschiefer ore with only frothers provides a concentrate enriched in the carbonaceous matter and the tailing directed to further upgrading steps. A partial removal of easy-to-float components of the feed before the main enrichments steps by flotation (rougher, scavenger), improves overall efficiency of separation of valuable elements from the ore. Since the type and dose of frother used for pre-flotation effect the process, the aim of this study was to determine the influence of selected frothers on the efficiency and selectivity of the Kupferschiefer ore processed by KGHM Polska Miedz S.A. A series of pre-flotation tests in the presence of different poly(propylene glycols) ethers, poly(ethylene glycols) ethers and aliphatic alcohols were conducted. The obtained results indicated that the type and dose of frother determined the flotation selectivity of copper and total organic carbon. The evaluation of the preflotation process was based on the analysis of selectivity parameters calculated from the recovery-recovery Fuerstenau upgrading curves as well as the values of copper and organic carbon grades in the flotation products. It was shown that pre-flotation performed in the laboratory scale using a suitable frother provided higher overall flotation selectivity of organic carbon with lower overall flotation selectivity of copper in comparison to flotation without the pre-flotation step. Thus, the pre-flotation process improves the quality and quantity of the final concentrates produced from the Kupferschiefer ore. KEYWORDS flotation, pre-flotation, frother, upgrading, selectivity, copper ore *Corresponding author: Wroclaw University of Technology, Faculty of Geoengineering, Mining and Geology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland. Phone: +48 71 3206864. Email: [email protected]