PROCESSING

Sotkamo starts ore sorting trial

Company targets 50% reduction of non-ore going into the grinding process.

Processing cells at the Sotkamo Silver mine where the XRT technology trial is taking place

Processing cells at the Sotkamo Silver mine where the XRT technology trial is taking place

The trial started in May after the ore sorter was supplied and commissioned at the mine by Outotec and Tomra. 

The facility uses X-Ray Transmission (XRT) technology to scan every feed particle and identify the relative atomic density differences within particles. High-grade particles are then pneumatically separared from the unwanted material. 

The sorting process occurs after primary crushing and it is expected to reduce the amount of non-ore going into the grinding and flotation processes by about 50%, thus increasing the energy efficiency.

Leftover barren material is used as rock-fill in the underground mine.

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