gold recovery by crushing of circuits boards in nigeria

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gold recovery from printed circuit boards of mobile

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GOLD RECOVERY FROM PRINTED CIRCUIT BOARDS OF MOBILE PHONES SCRAPS USING A LEACHING SOLUTION ALTERNATIVE TO CYANIDE. ... An impact crushing dynamic model of waste printed circuit board particles. Research on Chemical Intermediates, 39, 3611-3630 (2013).

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recovering gold and precious metals from circuit boards

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Most circuit boards contain all sort of precious metals: Gold, Silver, Palladium and sometimes Platinum. All circuit boards contain base metals: Copper, Nickel, Aluminum, Zinc, Tin, Lead and Iron. As well, small amount of hazardous elements like Beryllium, Barium and others that has to be considered while processing scrap circuit boards

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Nov 15, 2013 · Put the gold fingers and clean circuit boards in the coffee pot, in another container mix two parts muriatic acid and one part hydrogen peroxide and add to the coffee pot until it just covers the gold fingers and wait a week giving it a stir daily

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Apr 12, 2017 · Fill the plastic tray with water to half of its depth, place the remaining circuit board scrap in it and rinse. Pour this water through the filter to extract any remaining gold flakes. Flush water over the gold flakes to wash them. Pour the methanol through the filter to wash the gold flakes

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As a matter of fact, a ton of computer circuit board and micro chips contains as much as 800 times more gold than what is obtainable in one ton of gold. The good thing about this process is that it would only cost you about 20 US Dollars to recover 1oz. worth of scrap gold …

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