STUDIES ON EXTRACTION OF COPPER FROM SULFURIC ACID SOLUTION AFTER THERMOCHEMICAL ENRICHMENT OF ROUGH CONCENTRATE
Karimova L. Makasheva G. Zakharyan D. Malyshev V. Kharchenko Y.
18 June 2024Technical University of Kosice
Acta Metallurgica Slovaca
2024#30Issue 264 - 71 pp.
One of the processes of complete and complex extraction of valuable components is the desiliconization of final tailings to increase the content of concentrate and obtain marketable products in the form of white soot and copper cathode. This study aimed to investi-gate the possibility of further extraction of copper from the sulfuric acid solution obtained after the thermochemical enrichment of rough copper concentrate on a temperature range of 300-500°C. Acorga M5774 extractant and Elixore 205 diluent served to extract copper from the pregnant solution containing 9.59 g/l copper and 24.6 g/l iron. The study of the extractant performance and parameters involved plotting the isotherms of extraction and re-extraction curves. The result shows thermochemical enrichment of the rough concentrate using alkali and subsequent leaching with further copper extraction. The concentrate water leaching yielded 88.0% silicon recovery and 96.15% copper recovery. The copper recovery was 97.9%, with an organic-to-water phase ratio of 1.2. From the de-pendence of iron transfer on the copper saturation of the organic phase, it follows that if the latter is low, the rest of the extractant will absorb iron, so some excess copper content is required.
Acorga M5774 , copper extraction , diagram , Elixore 205, electrolyte , pregnant solution
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Zh. Abishev Chemical-Metallurgical Institute, Ermekova street 63, Karaganda, 100009, Kazakhstan
Non-profit joint stock company Karaganda Industrial University, Respubliki avenue, 30, Temirtau city, 101400, Kazakhstan
Metallurgy Laboratory of LLP “Innovation”
LLP “KazHydroMed”
Satbayev University
Orient Exploration Team LLP
Zh. Abishev Chemical-Metallurgical Institute
Non-profit joint stock company Karaganda Industrial University
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