Copper extractants

In the Davy-Powergas unit (118—120), shown in Figure 13c, the Hquids mn through a draft tube and are pumped by an impeller mnning directly above the draft tube. The dispersion flows out from the top of the mixer and down through a channel into a rectangular settler. Large units of this type are used for copper extraction (7). 

Fig. 18. Diagrammatic representation of copper extraction using solvent extraction (273).

P-diketones Hostaiex DK16, LIX54 Hoechst, Henkel copper extraction from ammoniacal solution... 

AH commercial copper extractants selectively extract copper from weakly acidic aqueous leach solutions by the general reaction... 

Figure 4.8 Flowsheet for copper extraction from sulphide concentrates.

Russell, J. H. Rickel, R. L. Modeling copper extraction from acidic solutions using P5100, PT5050, and LTX84. Solvent Extr. Ion Exch. 1990, 8, 855-873. 

Herreros, O. Quiroz, R. Manzano, E. Bou, C. Vinals, J. Copper extraction from reverberatory and flash furnace slags by chlorine leaching. Hydrometallurgy 1998, 49, 87-101. 

Kordosky, G. A. Virnig, M. J. Mattison, P. Beta-diketone copper extractants structure and stability. International Solvent Extraction Conference, Cape Town, South Africa, Mar. 17-21, 2002, 360-365. 

Copper Extraction of ammonium pyrrolidine dithiocarbamate complex with MIBK Miscellaneous < 0.5 pg/1 [374]... 

Copper Extraction with 8-quinolol in ethyl propionate Electron spin resonance spectroscopy < 2 pg/1 [300]... 

Cuprex [Copper extraction] A process for extracting copper from sulfide ores, combining chloride leaching, electro-winning, and solvent extraction. Piloted by a consortium consisting of ICI, Nerco Minerals Company, and Tecnicas Reunidas. 

An alternative circuit for copper extraction involves ammoniacal leaching, and hydroxyoximes have been studied for this application [2]. However, because of their tendency to extract ammonia, these reagents have been superceded by /i-diketones. 

Large-scale winning of copper by acidic leaching of copper ores sometimes results in waste solutions containing appreciable amounts of uranium. The uranium bearing aqueous raffinate from copper extraction is usually a dilute sulfuric acid solution. Uranium can be recovered using the same technique as described in section 12.3.1. A typical example is uranium production at the Olympic Dam mine in Australia, where the copper ore bodies are estimated to contain a total of over a million metric tons of uranium. 

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