(2) recovery of a metal from an ore or solution by electrochemical processes.
An electrochemical process used to recover gold and other metals from solution in the leaching of ores and concentrates.
A common metal recovery technology. Essentially electroplating, electrowinning is iployed to electrolytically recover metal from wastewater through electrolysis. Large cathodes, and other design strategies are iployed to win metal ions from dilute waste streams. Metal is recovered on cathodes for reuse or sold as scrap. The most common application is on drag-out tanks, where the fluid is continuously recycled through the electrowinner and a low concentration of metal is maintained (rather than the steadily rising concentration that would otherwise occur in a still rinse).
the recovery of metal by electrolysis. An electric current is passed through a solution containing dissolved metals, which causes the metals to be deposited on a cathode.
An electrolytic refining process in which the metal is recovered from the electrolyte rather than from an anode.
a technique used in mineral processing to recover a metal (such as copper, zinc or nickel) from a solution containing the metal ions. An electrowinning production cell is an electrochemical cell with an applied electric current in which metal ions deposit or plate as the metal on the cathode.
recovery of a metal from an ore by means of electro-chemical processes
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 the plate and dried for further treatment.
See Electrolytic Recovery.
Electrowinning, also called electrorefining or electroextraction, is the electrodeposition of metals from their ores that have been put in solution or liquefied. Electrowinning is electroplating on a large scale and is an important technique that allows purification of non-ferrous metals in an economical and straightforward step.