Choosing the Right Gold Retrival & Extraction Process
Gold recovery is a complex process that depends on the type of deposit, the gold’s association with other minerals, and the most efficient extraction method. While some deposits allow for simple gravity separation, others require advanced chemical and adsorption based techniques. The efficiency of gold recovery is significantly influenced by the quality of adsorbents used, especially activated carbon, which plays a crucial role in the adsorption of gold from cyanide solutions.
At Medaad, we supply high quality activated carbon and adsorbents that enhance gold adsorption efficiency, improve recovery rates, and optimize process performance across different gold extraction methods.
Understanding Gold Deposits
Gold is found in different types of deposits, and choosing the proper recovery method depends on the gold’s composition, grade, and physical state.
Free Milling Gold Recovery
Grinding easily eliminates free milling gold, which can be recovered using Activated Carbon adsorption. This process involves cyanide leaching followed by gold adsorption onto activated carbon. The loaded carbon is then processed through elution and electrowinning to extract pure gold.
Heap leaching is a cost effective recovery method for low grade free milling gold. Crushed ore is stacked and treated with cyanide, and the gold bearing solution is collected for adsorption onto activated carbon.
For high grade free milling gold, the ore undergoes grinding, cyclone classification, and direct cyanidation, followed by carbon in leach (CIL), carbon in pulp (CIP), or carbon in column (CIC) adsorption.
Medaad’s acid washed activated carbon ensures high adsorption efficiency, minimal impurity interference, and extended carbon lifespan, making it an ideal choice for gold recovery circuits.
Sulfide Associated Gold Recovery and Extraction
Some sulfide associated gold is recoverable using gravity separation, but most of it requires flotation followed by carbon adsorption. The flotation process concentrates the sulfide minerals containing gold, which is further processed using cyanide leaching and activated carbon adsorption.
High quality activated carbon enhances this process by improving gold adsorption rates, reducing cyanide consumption, and ensuring efficient recovery.
Refractory Gold Recovery
Refractory gold ores are the most challenging to process because gold is encapsulated within sulfides or carbonaceous materials. Conventional cyanidation does not work effectively without pre treatment.
To release the gold, refractory ores require:
- Ultra fine grinding to expose gold particles.
- Oxidation processes such as roasting or pressure oxidation.
- Chemical treatment to remove preg robbing materials.
In refractory gold processing, activated carbon is critical for adsorption after pre treatment. Medaad’s low ash, high purity activated carbon prevents preg robbing, ensuring the gold remains in solution until fully adsorbed onto the carbon.
Gold Elution & Electrowinning Process
After adsorbing gold onto activated carbon, it must be stripped from the carbon and recovered as pure metal. This is done using high temperature elution followed by electrowinning.
During elution, gold is desorbed from the carbon, creating a high grade gold solution. This solution is processed through electrowinning, where an electrical current forces gold to deposit onto cathodes. The recovered gold is then refined into pure gold bars.
Medaad’s high performance activated carbon ensures:
- Fast elution rates, reducing downtime.
- Consistent gold recovery efficiency.
- High purity and durability, minimizing carbon degradation
Why Choose Medaad for Gold Recovery?
Selecting the proper gold recovery method is essential for optimizing efficiency and reducing costs, but using high quality purification materials makes all the difference. At Medaad, we offer:
- Industry Leading Activated Carbon for CIL, CIP, and CIC circuits.
- Acid Washed Activated Carbon for maximum gold adsorption.
- Bulk Supply & Fast Global Shipping.
- Expert Recommendations for Process Optimization.
Enhance Your Gold Recovery Process with Medaad
Choosing the right gold recovery process is essential, but using premium grade activated carbon ensures maximum gold yield is achieved with minimal losses. Whether you operate a large scale mining plant, a refining facility, or a specialized gold recovery operation, Medaad’s advanced adsorption solutions deliver higher recovery rates, lower costs, and superior performance.
Contact us today to discuss your gold recovery needs and get expert advice on choosing the right activated carbon for your operation.
