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Technical case record · Carbon mineralisation

Crawford in-process tailings carbonation

A pilot programme is integrating CO₂ mineralisation into the proposed nickel process and tailings circuit.

Timmins, Ontario, CanadaPilot / project developmentPilot evidence

What was developed or tested

The project targets accelerated reaction of CO₂ with reactive ultramafic minerals and verification of storage stability and permanence.

What the evidence supports

A leading example of designing carbonation into a future process. Commercial claims remain contingent on full project delivery and independent verification.

Environmental and technical uncertainty

The route promises permanent mineral storage, but claimed scale depends on mine development, process integration and robust MRV.

Benefit-case screening lens

Potential value: Durable carbon removal, possible carbon value, improved residue stability and a measurable decarbonisation contribution.

Deployment constraints: Additional uptake, kinetics, measurement and verification, energy, water, land, operating integration and the permanence of storage.

Question before applying elsewhere

Can additional, durable carbon uptake be measured and verified without creating unacceptable energy, water or environmental burdens?

Sources

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