Ushchapovskyi D. The copper electrowinning process intensification in complex processing of oxide ore with obtaining high profitable products

Dissertation work is devoted to engineering of: highly productive and energy-saving processes of compact and disperse copper electrowinning; flexible waste-free technology of oxide ores processing with obtaining a wide range of liquid products. The regularities of compact copper deposits formation in electrowinning process was observed. The mathematical dependence of maximum current density of compact сopper deposits formation on the metal concentration in sulfate solution was obtained. The process of step sulfate leaching of observing ore which allows obtaining copper pregnant leach solution with optimum Fe3+ ions concentration and maintain high current efficiency of copper electrodeposition was developed. The process of compact copper electrowinning which include improving of anode construction and current mode and allows increasing almost in two times working current density was designed. The complex technological scheme of copper oxide ores and certain industrial wastes processing which allows changing of production line and obtain wide range of commodity products was proposed.