Livium and Sumitomo Advance Derrimut Black Mass Plan to Technical Review

Livium Ltd (ASX:LIT) has moved its Sumitomo partnership from a non-binding memorandum of understanding, signed 18 May 2026, into a full technical and commercial assessment of expanded black mass processing at subsidiary Envirostream's Derrimut facility in Victoria.

The upgrade in scope is the hardest signal yet that the Australian–Japanese battery materials chain is being engineered for real tonnes, not just paper. But the filing is careful: no binding black mass purchase or investment agreement exists yet, and Livium CEO and Managing Director Simon Linge said significant work remains before the opportunity can be fully commercialized.

What does the technical review actually cover?

Plenty. Envirostream and Sumitomo Corporation are now working through the engineering and commercial checklist that decides whether a new processing line gets built at Derrimut:

• Processing technologies and equipment options from multiple suppliers
• Capital and operational expenditure estimates across several expansion scenarios
• Projected returns for each scenario
• Environmental permits, fire and safety standards, and site infrastructure requirements
• Approval timelines for a new processing line

Sumitomo Corporation is also talking to downstream and technical partners — chiefly Sumitomo Metal Mining — to define what an integrated supply chain would require.

For practitioners, that list tells you where this sits: pre-FID, but past first base. When a counterparty starts pricing capex scenarios and mapping permit timelines, the study has teeth.

How would the three-party chain work?

The filing sketches a regional framework with distinct roles. Envirostream handles Australian battery collection and black mass production, including any Derrimut expansion. Sumitomo Corporation acts as regional program coordinator — commercial terms, logistics, downstream market arrangements, and evaluation of investment and technical support. Sumitomo Metal Mining sits at the end of the chain as a potential refiner of recovered black mass, under separate agreements with Sumitomo Corporation.

One structural point the filing makes explicit: Livium has no agreement with Sumitomo Metal Mining, and the two Sumitomo entities operate separately. Anyone modelling this deal should treat the refiner's participation as a condition, not a given.

Sumitomo Corporation has also begun data collection and preliminary onboarding for a potential black mass purchase. Again — preliminary. Nothing binding has been signed under the MOU.

What is already contracted?

Derrimut is not waiting on Sumitomo to fill its schedule. Envirostream holds a binding black mass off-take agreement with South Korea's SungEel HiTech, securing contracted volumes through June 2027. That gives the plant roughly two years of committed offtake regardless of how the Sumitomo track develops — and gives Livium leverage in negotiating any second agreement.

What has to happen before this becomes capacity?

The filing is blunt about the gating items. Any future supply, investment or expansion depends on:

• Successful technical and economic evaluations
• Regulatory approvals
• Funding arrangements
• Execution of definitive agreements

Until those close, this remains an announced project, not built capacity. Derrimut's current footprint and the SungEel contract are the operating reality; the Sumitomo-linked expansion is the option being priced.

Still, the direction matters for the Australian battery recycling sector. A chain that pairs local black mass production with Japanese refining capacity would give Envirostream's output a second, deeper-market destination — and give Sumitomo Metal Mining a feedstock route into a country whose end-of-life battery volumes are only starting to scale.

The next milestone is straightforward: definitive agreements, or the capex and permit findings that justify them. Watch for a final investment decision on the Derrimut expansion line before treating any of this as committed tonnage.