Ore processing capacity
Total recovered gold: 91.8%
A fleet of autonomous haulers feed the primary and secondary crushers. A 54 x 75 primary gyrator crusher, which crushes ore at an average rate of 2,143 t/hr, was selected based on volumetric throughput and power requirement.
A fleet of autonomous haulers feed the primary and secondary crushers. A 54 x 75 primary gyrator crusher, which crushes ore at an average rate of 2,143 t/hr, was selected based on volumetric throughput and power requirement.
Two days' of coarse ore is stockpiled to provide a consistent stream of ore for the high-pressure grinding rolls.
Two days' worth of coarse ore is stockpiled to provide a consistent stream of ore for the high-pressure grinding rolls.
To maximize uptime and throughput while also maintaining high energy and water consumption efficiency, high-pressure grinding rolls are employed before the ball and vertical mills. To further support uptime, one scalping screen is pulled out and replaced each month, while the circuit continues to run on two screens.
To maximize uptime and throughput while also maintaining high energy and water consumption efficiency, high-pressure grinding rolls are employed before the ball and vertical mills. To further support uptime, one scalping screen is pulled out and replaced each month, while the circuit continues to run on two screens.
The next step in comminution includes a ball mill followed by two vertical mills. The vertical mill redundancy allows for continued operations.
The next step in comminution includes a ball mill followed by two vertical mills. The vertical mill redundancy allows for continued operations.
An intensive cyanidation reactor processes high-grade gravity concentrate. Pregnant solution from the reactor is treated in a dedicated electrowinning cell. This process accounts for approximately 40% of gold recovery.
An intensive cyanidation reactor processes high-grade gravity concentrate. Pregnant solution from the reactor is treated in a dedicated electrowinning cell. This process accounts for approximately 40% of gold recovery.
The remaining 60% of recovered gold is extracted through carbon in pulp (CIP), with approximately 30 hours of residence time in the leach tanks and 1.5 hours of residence time in the CIP circuit.
The remaining 60% of recovered gold is extracted through carbon in pulp (CIP), with approximately 30 hours of residence time in the leach tanks and 1.5 hours of residence time in the CIP circuit.
Pressure Zadra elution is applied to the carbon stripping process for 16 hours, using two elution vessels with a capacity of 11.3 t each.
Four 3.5 m3 electrowinning cells are arranged in two lines of two. After electrowinning, the equate is recycled to elution as part of the carbon stripping process.
Pressure Zadra elution is applied to the carbon stripping process for 16 hours, using two elution vessels with a capacity of 11.3 t each.
Four 3.5 m3 electrowinning cells are arranged in two lines of two. After electrowinning, the equate is recycled to elution as part of the carbon stripping process.
Cyanide destruction takes place in two tanks in parallel with the addition of sulphur dioxide. Following cyanide destruction, overflow water from the tailings thickener is recycled back to the process-water tank, and the underflow solids are pumped to the tailings management facility.
Cyanide destruction takes place in two tanks in parallel with the addition of sulphur dioxide. Following cyanide destruction, overflow water from the tailings thickener is recycled back to the process-water tank, and the underflow solids are pumped to the tailings management facility.
