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Re: ValuePro post# 33666

Sunday, 10/17/2010 8:17:36 AM

Sunday, October 17, 2010 8:17:36 AM

Post# of 173228
Any metal in the impure anode which is below copper in the electrochemical series (reactivity series) doesn't go into solution as ions. It stays as a metal and falls to the bottom of the cell as an "anode sludge" together with any unreactive material left over from the ore. The anode sludge will contain valuable metals such as silver and gold.

http://www.chemguide.co.uk/inorganic/extraction/copper.html
Read: What happens to the impurities?



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