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Recycling of a copper flue dust via leaching-solvent extraction processing

AuthorsAlguacil, Francisco José; García-Díaz, Irene; López Gómez, Félix Antonio ; Rodríguez, O.; Alonso Gámez, Manuel
KeywordsAcorga PT5050
Solvent extraction: Ammonium chloride
Copper flue dust
Issue Date2013
CitationProceedings of the 4th International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2013) & SECOTOX Conference: 335- 340 (2013)
AbstractA laboratory/bench scale investigation relating the copper recovery from a Chilean copper flue dust is described. Since the dust contained a high amount of copper (near 24 %), the considered option consists in the leaching of the metallic material with ammonium chloride solution, thus enabling the dissolution of copper via either of its ammoniacal complexes, and also rendering, due to the almost neutral conditions of the leaching solution, a near complete lean solution with respect to the presence of other copper metal-accompanying in the dust. Copper enters the solvent extractionelectrowinning circuit due to the next equilibrium: Cu (NH3) 2 + 2HRorg --> CuR2 + NH4 aq which regenerates the leaching reagent. In the above equation, HR represented the active substance of the extractant (Acorga PT5050) used in the solvent extraction circuit.
Identifiersisbn: 978-960-6865-68-8
Appears in Collections:(CENIM) Comunicaciones congresos
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