Rare earths miner Rainbow Rare Earths has entered into a memorandum of understanding (MoU) with a diversified chemicals group to investigate extracting rare earth elements from a nitro phosphate process stream at the chemicals group’s phosphoric acid production plant near Johannesburg.
The feedstock for the phosphoric acid production plant originates from the same ore originally mined by South African group Foskor that generated the two gypsum stacks at Phalaborwa.