electrowinning


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electrowinning

[i¦lek·trō′win·iŋ]
(metallurgy)
Extracting metal from solutions by electrochemical processes.
References in periodicals archive ?
This technique uses heap leaching, solvent extraction and electrowinning meaning that the copper will be dissolved out of the rock and then recovered from the solution.
While the technique has various names, such as electrowinning, electrolytic removal/recovery or electroextraction, it all works the same way, by using an electrical current to transform positively charged metal ions (cations) into a stable, solid state where they can be easily separated from the water and removed.
The Kokomo project will be incorporated into NORNICO feasibility studies into developing a heated agitated Atmospheric Acid Leaching (AAL) and solvent extraction/ electrowinning (SX/EW) operation to produce LME grade nickel metal and a cobalt sulphide.
The process starts with the leach solution from spent batteries and includes a new solvent extraction process, together with conventional solvent extraction, ion exchange, electrowinning and precipitation.
Plans call for the oxide ore to be transported to a heap leach pad using a dilute acid recovery process and then treat the solutions through electrowinning technology to produce pure cathode copper.
After the near surface mineralization is defined, and tonnages and grades are confirmed, it will be extracted by the open pit method and metallurgically treated using EMEW electrowinning technology which has been successfully demonstrated by ICS in the Democratic Republic of Congo over the last two years.
CATHODE--A form of copper produced through an electrowinning or electrolytic process.
The method of extraction will involve biological leaching to dissolve the metals from the pyrites, followed by solvent extraction and electrowinning.
John Svoboda, The Center for Metals Production, an R&D program funded by the Electric Power Research Institute; and a process involving sulfuric acid leaching followed by zinc electrowinning from the leach solutions, described by John Hanna, Mineral Resources Institute, Univ of Alabama.
Asarco has a solvent extraction electrowinning (SXEW) plant approximately 4 1/2 miles to the west of the East Silver Bell Project property line.
Automated slurry level controls installed in agitators (slurry mixer tanks) at nickel electrowinning shop have led to RUB 1 million in savings.