Electrowinning, also called electroextraction,'s the electrodeposition of metals from their ores that've been put in solution or liquefied. 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 and straightforward purification of non-ferrous metals. The resulting metals are said to be electrowon. In electrowinning, a current's passed from an inert anode through a liquid leach so… (More on Electrowinning)