1500 TPD Gold Mine CIL Expansion Project in Malaysia

Upgraded Crushing & Grinding Circuit:

• Upgraded Crushing & Grinding Circuit:
• Expansion: Addition of a new, larger capacity Cone Crusher for secondary/tertiary crushing to maintain a consistent sub-12 mm feed to the grinding mill.
• Expansion: Installation of a second Ball Mill in closed circuit with hydrocyclones to achieve a finer grind of 74µm and D85, improving gold liberation from sulfide minerals.

Oxidation & Conditioning (For Refractory Ore):

• New Installation: An Oxygen Generation Plant and sparging system was integrated into the leach tanks to increase dissolved oxygen levels, enhancing cyanide leaching efficiency for sulfide-bearing ores.

Gold Recovery & Refining:

• Loaded carbon is transferred to the Elution & Electrowinning system to desorb gold and plate it onto steel wool cathodes.
• Cathodes are processed in the Gold Smelting Furnace to produce high-purity gold ingots.
• Regenerated carbon is recycled back to the CIL circuit.

Enhanced Pre-Leaching Concentration:

• New Installation: A Gravity Concentration Circuit (Centrifugal Concentrators) was added to recover coarse, free gold directly from the mill discharge. This reduces gold load on the CIL circuit and improves overall project economics.

Expanded CIL (Carbon-in-Leach) Circuit:

• Expansion: Construction of six additional, larger-volume Agitated CIL Tanks, extending the total leaching time to 28 hours.
• The cascade design ensures progressive gold adsorption onto activated carbon.
• Expansion: Upgraded Inter-stage Screens for efficient carbon movement and retention.