Sovereign Metals Ltd has marked a productive March 2025 quarter, advancing both the technical and social dimensions of its flagship Kasiya Rutile-Graphite Project in Malawi.
The company continues to de-risk the project while sharpening its economic outlook through a Rio Tinto-supported optimised prefeasibility study (OPFS) and ongoing definitive feasibility study (DFS) work.
OPFS enhances delivery model and project economics
In January, Sovereign delivered the OPFS for Kasiya, refining the initial 2023 prefeasibility study.
Developed with oversight from the Sovereign-Rio Tinto Technical Committee, the updated study confirms Kasiya’s standing as one of the world’s most significant critical minerals projects outside China, targeting long-term production of natural rutile and natural flake graphite.
The revised strategy introduces a shift to open-pit dry mining using draglines, favouring a staged, owner-operated model with leased equipment.
This transition boosts operational flexibility and contributes to environmental improvements, including a 40% reduction in annual water requirements and a 44% cut in tailings volume.
The plant configuration and layout have also been refined, with a simplified design that avoids later-stage relocations and maintains throughput at 24 million tonnes per annum by Year 5.
Key economic metrics remain strong, with an average annual EBITDA of US$409 million, and a pre-tax NPV8 of US$2.32 billion, despite some inflationary adjustments to capital and operating costs.
Kasiya graphite proves market-ready
Sovereign continued graphite qualification programs during the quarter, confirming that its flake graphite is suited to over 94% of end-use markets – including battery anodes, refractories, and expandable/expanded graphite products.
Importantly, the company expects to produce a 96% graphite concentrate at a competitive incremental cost of US$241 per tonne (FOB), positioning Kasiya to rival Chinese producers on cost.
Graphite pricing remains supportive, with large flake product for refractories attracting prices of up to US$1,193 per tonne, while battery-grade flake recently fetched US$564 per tonne, according to Benchmark Mineral Intelligence and Syrah Resources reporting.
Community-first rehabilitation success
Rehabilitation of the Pilot Phase test pit at Kasiya reached a key milestone, with backfilling and soil remediation works completed before year-end 2024.
Landowners returned in early 2025 to plant crops without missing a season, participating in hands-on remediation and intercropping activities.
Early crop testing includes maize and giant bamboo, contributing to long-term soil revitalisation and sustainable farming.
Sovereign’s rehabilitation approach aims to enable productive post-mining land use, restoring soils to a depth of one metre to support both subsistence and commercial agriculture in the future.
DFS geotechnical drilling underway
Geotechnical programs commenced in April to inform the DFS layout and engineering design. Drilling and geophysical surveys are being conducted across key infrastructure zones including the processing plant, tailings storage facility, water dam and substation sites.
The DFS remains on track for completion in Q4 2025, at which point Rio Tinto will have 180 days to exercise its option to assume project operatorship and gain exclusive marketing rights for 40% of Kasiya’s output.
Strengthened balance sheet and continued momentum
In March, Sovereign raised A$40 million through a placement, bringing its total cash reserves to over A$65 million with no debt. Rio Tinto did not participate, citing sufficient existing funding for the DFS.
The placement diluted Rio’s holding to 18.5%, though the strategic investor remains actively engaged via the joint technical committee.
Looking ahead, Sovereign plans to update the market on its upgraded mineral resource estimate, continued graphite testwork, offtake discussions, and social development initiatives.
The company’s multi-pronged progress affirms its stated mission to develop a world-class critical minerals operation with strong commercial, technical and community foundations.