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Electrorefining

Electrorefining is a process that uses electrolysis to increase the purity of a metal that has previously been extracted from its ore. In the process the anode, or positive electrode, is the impure metal to be purified. During electrolysis, the purified metal collects on the cathode or negative electrode. The metal is deposited in a form that can be readily smelted easily into a more usable form.

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