CIP CIL Gold loaded Activated Carbon

Gold-loaded activated carbon refers to activated carbon that has adsorbed precious metals such as gold and silver. It is mainly used for gold extraction (carbon-in-pulp CIP/CIL process) and can also be used to recover precious metals in wastewater or electronic waste. Its core features are high adsorption capacity, easy desorption and recyclability.

Types of gold-loaded carbon
Classification by raw materials
Coconut shell gold-loaded carbon: high hardness, high adsorption, suitable for CIP/CIL process (mainstream choice).

Coal-based gold-loaded carbon: low cost, but weak adsorption capacity, mostly used for low-grade gold mines.

Fruit shell gold-loaded carbon (such as apricot shell): between coconut shell and coal, cost-effective.

Classification by process use
Adsorption carbon: used for adsorption of gold in ore slurry (CIP/CIL process).

Desorption carbon: used for electrolysis or high-temperature regeneration after loading with gold.

Application process of gold-loaded carbon (CIP/CIL process)
Adsorption stage:

The ore slurry (containing gold cyanide solution) is mixed with activated carbon, and gold is adsorbed on the carbon.

Adsorption time: 6-24 hours, depending on the gold concentration and carbon performance.

Desorption stage:

The gold-loaded carbon enters the desorption column and the gold is eluted with high-temperature and high-pressure NaOH+NaCN solution or alcohol desorbent.

Electrolytic gold extraction:

The desorption solution enters the electrolytic cell, and the gold is deposited on the cathode (gold mud is obtained).