Mintek spells out value of PGM preconcentration plus chrome recovery

Successful removal of coarse waste is beneficial in that it reduces power requirements in the milling circuit, lowers water needs, and increases platinum group metal (PGM) feed grades. With preconcentration, a head grade of, for example, 2 g/t can be as much as doubled to 4 g/t, resulting in PGMs being valuably increased in the circuit. Mintek’s studies show that upfront preconcentration is viable but mineralogy dependent.

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