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Copper Recycling Comprehensive Refining Process

     

Copper Recycling Comprehensive Refining Process

1、Raw Materials:The process utilizes by-products generated during copper production, such as copper wire scrap and circuit board residues. This approach aligns with global decarbonization goals (Double Carbon Strategy), making recycled copper a key strategic resource. It significantly reduces energy consumption by 30% compared to primary copper production and decreases carbon emissions by over 60%, thereby enhancing supply chain resilience.

2、Refining Process:

Direct Refining via Remelting:Copper materials are melted in furnaces to produce molten copper.The molten copper undergoes oxidation-reduction refining, yielding high-quality copper.The refined copper is poured into molds to cast copper electrolytic plates.

Electrorefining:

The copper electrolytic plates are dissolved in an electrolytic solution.This process separates copper from precious metals (e.g., gold and silver) attached to the copper.The resulting product includes high-purity copper (cathode copper, "negative electrode copper").

Precious Metal Recovery:Copper anode sludge undergoes oxidation roasting to extract copper, followed by electrolysis for further recovery.Gold and silver are then processed through reduction steps to obtain raw precious metals.

Environmental Benefits:This sustainable approach minimizes environmental impact by utilizing materials that would otherwise contribute to electronic waste and reducing reliance on primary mineral resources. The process is energy-efficient and emits fewer greenhouse gases, aligning with global decarbonization initiatives.

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