Anode slime, a crucial by-product of electrolytic refining, contains significant concentrations of gold, silver, and other precious metals. Efficient extraction is vital for profitability and sustainable resource recovery.
Guanma Machinery Gold Silver Extraction from Anode Slime Methods—Hot Leaching, Electrochemical, Chemical Reduction, and High-Temperature Reduction—detailing their operational principles, extraction efficiency, cost-effectiveness, and environmental trade-offs to inform your metal recovery strategy.
Gold Silver Extraction from Anode Slime Methods
1. Hot Leaching Method
Process: Anode slime is heated and soaked in alkaline solutions, dissolving gold, silver, and other precious metals.
Advantages: High extraction rate, straightforward operation.
2. Electrochemical Method
Process: Anode slime undergoes electrochemical reactions between electrodes at controlled potentials, reducing gold/silver ions to metal deposited on the cathode.
Advantages: High recovery efficiency, minimal pollution.
3. Chemical Reduction Method
Process: Precious metal ions are reduced to elemental form using chemical reductants.
Advantages: Simple operation, broad applicability.
4. High-Temperature Reduction Method
Process: Anode slime is reduced at elevated temperatures to extract metallic gold/silver.
Advantages: Exceptionally high extraction yield.
