⎪ Minerals processing and materials handling ⎪
Christmas break. By the end of January 2023, the plant was producing on-spec concentrate of 41% Cr 2 O 3 . The first full month of running the plant achieved a 6% increase on the previ- ous plant yield, increasing the production output of the plant to 40-50%. This enables the client to achieve a proj- ect payback period of three months, which includes the rebuild and modification of the plant. The project was completed safely, with no injuries experienced, which was a testament to the good project management from the client. Jafta Mashele, the Plant Manager of the K3 Chrome Recovery Plant at Sibanye- Stillwater, expressed his satisfaction with the service provided by Multotec’s R&D di- vision, for their flexibility in conducting test work to meet the client’s needs and their willingness to adapt to specific requests. He stated, “I appreciate Multotec's ability to of- fer flexible payment terms, which suited and helped us manage cash flows effectively.” Mashele further commended Multotec, saying: “Multotec employs Application Engineers with extensive processing ex- perience and in-depth product knowledge, which enables us to address technical inqui- ries promptly, both remotely and on site.”
Left: An eight-way Multotec cluster of 250 mm cyclones at 10° with one barrel was selected for the desliming application. Right: Multotec’s HX5 spiral with a pitch angle of 19° was found to achieve the best recovery and yields on the rougher stage.
The plant is currently conducting test work with Multotec to further explore the recov- ery of chrome from the ultra-fine material, with Mashele consistently emphasising the importance of data-driven decisions. This
work is being carried out using the new UX7 ultra-fine heavy minerals spirals, that is spe- cifically designed to enhance the recovery of ultra-fine material. www.multotec.com
July-August 2025 • MechChem Africa ¦ 11
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