Metso Full portfolio CCD optimizer
CCD optimizer

CCD optimizer

Stabilize and control the operation of CCD (Counter Current Decantation) thickeners to the optimum operating point.
Benefits

The CCD optimizer can reduce the variation of operating parameters of CCD thickeners, potentially up to 40-60%, even in changing process conditions. This brings multiple benefits for downstream gold leaching circuits with stable slurry retention time and better management of activated carbon.

  • Higher gold recovery
  • Improved washing efficiency
  • Less flocculant consumption
  • Robust fully standalone operation
Benefits

CCD optimizer is a solution that combines Metso’s thickening experience with a multivariable, model-based controller. It can automatically control all key variables of a CCD circuit.

Applications

  • CCD circuits

Counter Current Decantation (CCD) thickener circuits are used to recover soluble metal as a pregnant liquor solution from ore leach residue. The basis of CCD operation is to concentrate suspended solids thereby minimizing liquor content in underflow slurry that flows in one direction. Then the underflow slurry liquor is diluted with wash liquor that flows in the opposite direction and the suspended solids are concentrated again and again.

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Thickener optimizer

Improve thickening performance by controlling the key variables of a thickener, including underflow density, the overflow solids ...
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