A new method of extracting gold and other precious metals from
electronic waste and can also be adapted for mining use is being
claimed by EnviroLeach Technologies in Vancouver, British
According to an article on Mining.com, the firm has partnered with Jabil Inc. to
implement use of the purported environmentally safe process at a plant
to open in December in Memphis,Tennessee, to help retrieve precious
metals from the roughly 50 metric tons of scrapped electronics dumped
in landfills worldwide annually.
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The process can also be used in the mining industry instead of using
cyanide, acid digestion or other conventional methods that are banned
in some areas of the world, according to EnviroLeach CEO Duane Nelson.
Nelson claims the new process uses a combined solution of five
inorganic components mixed with water that can be reused after recharging.
Designer abandoned original reverse design late
in the process
Also in our Oct. 30 issue, Mike Diamond presents an interesting
question in his Collectors’ Clearinghouse column: How many errors
can one coin have?
The proprietary process involves shredding discarded circuit boards
and other components from electronic devices that contain gold and
other precious metals. According to the Mining.com article, the
proprietary solution along with ore concentrate or shredded e-waste is
forced through cells of man-made diamond plates and then electrified,
separating the gold and other precious metals from the solution.