Rainbow Rare Earths is seeing rapid progress with Phalaborwa optimisation

Rainbow Rare Earths (LSE:RBW) reported significant progress in optimizing its Phalaborwa project in South Africa, leveraging its new in-house laboratory to accelerate and reduce the cost of assay and bench-scale testing. The company is focused on optimizing the leach circuit (80% of project costs), improving rare earth recovery, and refining purification processes, with the goal of enhancing the project's economic resilience and establishing Phalaborwa as a strategic source of magnet rare earths. Findings from this work will be incorporated into the project’s feasibility study.

Analysis

Rainbow Rare Earths Ltd (LSE:RBW, OTC:RBWRF) is reporting accelerated progress and cost efficiencies at its Phalaborwa rare earth element (REE) project in South Africa, primarily driven by its newly operational in-house laboratory in Johannesburg. This facility, equipped for the full processing flowsheet including leaching, ion exchange, and separation, enables faster and lower-cost assay and bench-scale work compared to third-party options, significantly reducing turnaround times for the ongoing test programme. Chief Executive George Bennett highlighted that this internal capability is crucial for optimising the project, which is already considered one of the highest-margin REE projects in development, and will enhance its economic resilience. Key optimisation efforts are focused on the leach circuit, which constitutes approximately 80% of the total project cost base, improving REE recovery via continuous ion exchange, and refining the final purification route. The company is also evaluating a two-stage high-temperature leach process, reclamation methods, acid sourcing, and power supply alternatives. These findings are integral to the project's upcoming feasibility study and aim to position Phalaborwa as a strategic, diversified source of all four magnet rare earths, addressing urgent global demand. The positive sentiment surrounding this update, reflected in a sentiment score of 0.75, underscores the perceived benefits of these operational advancements.

Key Decisions for Investors

• Investors should closely monitor the progress of the optimisation studies, particularly concerning the leach circuit, as successful outcomes could significantly enhance project economics and reduce operational risks ahead of the feasibility study.
• Consider the Phalaborwa project's strategic positioning as a potential supplier of all four magnet rare earths, which are critical for the renewable energy transition and high-technology sectors, in light of ongoing global efforts to diversify REE supply chains.
• Evaluate the impact of the in-house laboratory on accelerating the project timeline and reducing development costs, as these efficiencies could positively influence the project's net present value and internal rate of return detailed in the future feasibility study.