1) Chemical process 2) Electroextraction 3) Metallurgical process 
Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as leaching. Electrorefining uses a similar process to remove impurities from a metal. Both processes use electroplating on a large scale and are important techniques for the economical...
Recovery of a metal from an ore by means of electrochemical processes.
An electrolytic refining process in which the metal is recovered from the electrolyte rather than from an anode. See electrolysis and SX/EW.
The process of removal of copper from solution by the action of electric currents.
Generally, the electrodeposition of a metal from an ore that has been put in solution via a process commonly referred to as leaching; a form of electrolysis. For copper oxide ore, electrowinning is the final stage in the process of hydrometallurgy, in which concentrated copper solution from the heap leaching and solvent extraction processes is used...
The removal of precious metals from solution by the passage of current through an electrowinning cell. A direct current supply is connected to the anode and cathode. As current passes through the cell, metal is deposited on the cathode. When sufficient metal has been deposited on the cathode, it is removed from the cell and the sludge rinsed off...
electroextraction.