Investigation of the process of extraction of copper from dust of electric filters of oxygen-flare smelting furnace with sulfuric, thermal, and extractive phosphoric acid

Abstract

The results of studies on the extraction of copper from the dust of electrostatic precipitators of oxygen-torch melting with solutions of sulfuric, thermal, extraction phosphoric depending on S:L, concentration and duration of the leaching process are presented. It has been established that the maximum degree of copper extraction is observed when using extractive phosphoric acid, which reaches more than 86%. The optimal parameters for the extraction of copper in extraction phosphoric acid are S:L = 1:10, temperature 90°C and mixing time 25-30 minutes.