Abstract
The aim of this work is construction of equilibrium isotherms in solvent extraction. Technological parameters have been predicted for treatment of mine water by solvent extraction and electrowining. Two stages of extractions and one stage of stripping have been predicted for copper recovery by analyzing the equilibrium isotherms. The process was performed on mine water with 2,5 g/dm3 Cu2+, 3 g/dm Fe2+, pH 1,8, using 9 vol% LIX 984N in kerosene (organic solvent), with 95 and 98% stages efficiencies, respectively. This course produced an advanced electrolyte solution, suitable for electrowining and cathodic copper recovery, containing 51 g/dm3 Cu2+ and 160g/dm3 H2SO4 from a 30 g/dm3 Cu and 190 g/dm3 H2SO4.
Highlights
Technological parameters have been predicted for treatment of mine water
one stage of stripping have been predicted for copper recovery by analyzing the equilibrium isotherms
The process was performed on mine water with 2,5 g
Summary
U radu je prikazana konstrukcija izotermi u solventnoj ekstrakciji bakra kako bi na osnovu njih odredili tehnološke kriterijume odnosno opcije procesiranja lužnih rastvora (jamskih voda) postupkom solventne ekstrakcije i elektrolizom. Istraživanja su pokazala da se pomoću 9 vol% LIX 984N reagenta u kerozinu (organskom rastvaraču), može ekstrahovati preko 90% bakra iz jamskih voda (sastava 2,5 g/dm Cu2+, 3 g/dm Fe2+, pH 1,8) i ostvari selektivnost 95% Cu/Fe. Analizom dobijenih ravnotežnih izotermi utvrđeno je da se ekstrakcija bakra postiže u dva stepena ekstrakcije i u jednom stepenu reekstrakcije. Prvi cilj je da se odrede opcije procesiranja bakronosne vode i drugi da se uspostave kriterijumi za projektovanje postrojenja za izdvajanje bakra solventnom ekstrakcijom iz vodene faze u organsku i reekstrakcijom iz organske faze u elektrolit [1]. Predviđa se iskorišćenje bakra od 90%, pri čemu odbakrena voda sadrži 0,255 g/dm Cu2+
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