Iron Removal from Copper Electrowinning Procces

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Hosseini, Farzaneh | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47195 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Askari, Masood
Abstract:
Iron is a common impurity in copper minerals. The presence of iron in hydrometallurgical copper PLS causes continuous reactions between Fe(II) and Fe(III) ions. In order to improve energy efficiency and product quality iron removal shall be done. In this study separation of iron from Sarcheshme copper leaching liquor containing 6 g/L Fe, was conducted by solvent extraction using D2EHPA in kerosene. Chloric acid solution was used to strip the loaded iron from organic phase. Results of extraction experiments designed by taguchi method showed 92.49% iron recovery and 2.44% copper extraction under optimum condition. Using same method for stripping experiments, it was found that variation of time and temperature in the defined range does not affect the results. 58.62% iron stripping was obtained under optimum condition
Keywords:
Solvent Extraction ; Diethyl Hexyl Phosphoric Acid (DEHPA) ; Copper Electrowinning ; Taguchi Method ; Iron Removal

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