In electrolytic refining, the impure metal is made the anode, and a thin strip of pure metal is made the cathode. A metal salt solution serves as the electrolyte.
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During electrolytic refining, the impure metal at the anode dissolves into the electrolyte, while an equivalent amount of pure metal is deposited on the cathode. Soluble impurities go into the solution, and insoluble impurities settle as anode mud at the ...
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