When direct current is applied, the copper from the anodes dissolves into the electrolyte, while precious metals like gold and silver remain undissolved, forming anode mud at the bottom. The dissolved copper then preferentially plates onto the cathodes, resulting in high-purity cathode copper (99.99%).
Copper Electrolysis Refining Tanks
Anode plates are suspended in the electrolytic refining tank, with pure copper cathodes positioned between them. As electricity flows, copper from the anodes moves into the solution and deposits on the cathodes. Impurities settle at the bottom of the tank.
Copper Anode Casting Machine
Copper anodes are semi-automatically cast into plates. The process begins with pretreating the copper to remove impurities like tin and lead, followed by smelting. After slag removal and reduction using natural gas to eliminate free oxygen, the final product is cast into anode plates.
Pure Copper Cathode Sheets
During electrolysis, copper ions migrate from the anode to the cathode, where they are periodically scraped off. Impurities, such as gold, silver, platinum, and tin, accumulate as anode slime at the bottom of the electrolyte solution.
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