Electrowinning is a process used to extract metals from their ores or solutions through electrochemical reactions. It involves passing an electric current through a solution containing metal ions, causing the metal to deposit onto an electrode. This method is commonly used for metals like gold, copper, and zinc. The process typically follows leaching, where the metal is dissolved in a solution. Electrowinning is efficient and environmentally friendly, as it can recover metals from waste solutions. The deposited metal can then be collected and further processed for various applications in industries such as electronics and construction.