Copper(II) extraction from ammonia leach solution

• Autorzy: Ochromowicz K. , Jeziorek M. , Wejman K.

Identyfikatory

DOI

10.5277/ppmp140127

• Języki publikacji: EN

Abstrakty

EN

Hydrometallurgical processing of copper-bearing materials (ores, concentrates, by-products) is usually done with the use of acidic or ammonia leaching. In the case where a leaching feed material contains significant amounts of carbonate rocks and iron minerals the second method is preferential due to a higher process selectivity. However, it can also be problematic considering possible ammonia transfer during the subsequent extraction process. The paper presents results of extraction of copper(II) from ammonia leach solutions. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction efficiency and ammonia transfer was studied. A few commercial extractants were examined, namely LIX 84-I, LIX 984N, LIX 54-100. The results clearly indicate that in the case of extraction systems using hydroxyoximes the extraction efficiency is remarkably higher than for βdiketone reagent. Presented studies proved that extraction efficiency of Cu(II) is also dependent on the type of diluent and is less favourable for systems with non-aliphatic diluents. It was observed that ammonia co-extraction occurs and depends on examined parameters. Scrubbing of loaded organic phase showed that ammonia can be removed almost completely using double wash with sulfuric acid solution.

Słowa kluczowe

EN

hydrometallurgy; hydroxyoximes; LIX; copper ore; copper concentrate

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 1
• Strony: 327--335
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Ochromowicz K.

• Wroclaw University of Technology, Faculty of Chemistry, Division of Chemical Metallurgy, Wybrzeże Wyspiańskiego 23, 50-370 Wrocław, Poland

autor

Jeziorek M.

• Wroclaw University of Technology, Faculty of Chemistry, Division of Chemical Metallurgy, Wybrzeże Wyspiańskiego 23, 50-370 Wrocław, Poland

autor

Wejman K.

• Wroclaw University of Technology, Faculty of Chemistry, Division of Chemical Metallurgy, Wybrzeże Wyspiańskiego 23, 50-370 Wrocław, Poland

Bibliografia

• 1. CHMIELEWSKI T., WÓDKA J., IWACHÓW Ł., 2009, Ammonia pressure leaching for Lubin shale middlings, Physicochemical Problems of Mineral Processing, 43, 5–20.
• 2. FLETT D.S., MELLING J., 1979, Extraction of ammonia by commercial copper chelating extractants, Hydrometallurgy, 4, 135–146.
• 3. FU W., CHEN Q., HU H., NIU CH., ZHU Q., 2011, Solvent extraction of copper from ammoniacal chloride solutions by sterically hindered b-diketone extractants, Separation and Purification Technology 80, 52–58.
• 4. JERGENSEN G.V., 1999, Copper Leaching, Solvent Extraction, and Electrowinning Technology, SME Inc., Littleton, USA, 267–268.
• 5. MILLER J.D., HAUNG H.H., PEREIRA E.F., 1981, Equilibrium and kinetics of copper extraction from ammonia solutions by hydroxyoximes with particular emphasis on transport phenomena, Process and fundamental considerations of selected hydrometallurgical systems, Society of Mining Engineers of American Institute of Mining, Metallurgical, and Petroleum Engineers, 221–241.
• 6. PARIJA CH., BHASKARA SARMA P.V.R., 2000, Separation of nickel and copper from ammoniacal solutions through co-extraction and selective stripping using LIX84 as the extractant, Hydrometallurgy, 54, 195–204.
• 7. PIETEK G., GOTFRYD L., SZOŁOMICKI Z., BECKER K., PIWOWOŃSKA J., KWARCIŃSKI M., 2011, Ekstrakcja miedzi(II) z roztworów amoniakalnych, Rudy i Metale Nieżelazne 56 (10), 511–516.
• 8. RITCEY G.M. 2006, in Solvent Extraction. Principles and Applications to Process Metallurgy, Rev. 2nd ed. Ottawa.