Optical Sorting of Tanzanite Concentrate

Two MikroSort machines have been commissioned in the sort-house at TanzaniteOne Mining Ltd, producer of the world’s rarest coloured gemstone, tanzanite. The mine is located in the foothills of Mount Kilimanjaro in Tanzania. The opto-electronic sorting technology is substantially improving recovery efficiencies, throughput and security within the sort-house at the mine.
The sorting plant is used for separating tanzanite fractions from waste by colour and transparency, two of the many optical properties that can be used to programme the MikroSort machines.