How mineral carbonation works.

  1. Start with a mineral residue

    Slags, ashes and dusts from heavy industry contain reactive oxides (XO). Today they are often landfilled, disposed of or sold below their potential.

  2. Add CO2 from any source

    Biogenic or fossil, pure or as diluted off-gas. CO2 that would otherwise be emitted is put to work.

  3. Mineralisation

    In the reactor, CO2 reacts with the oxides: XO + CO2 → XCO3. The carbon is bound in the mineral structure.

  4. The residue itself changes

    The carbonated residue now contains stable carbonates: up to 300 kg CO2 permanently bound per tonne. Leaching behaviour and volume stability change as well.

  5. Value in two directions

    Carbonated residue can go into construction applications, and the bound CO2 reduces ETS costs (fossil) or can be sold as carbon removal credits (biogenic).

Measured inline, not estimated.

We developed a scientific method and a sensor system that measure the carbonation rate inline, while the reaction runs. Every reading is verified by secondary analyses of the carbonated material – the basis for every number we report.

One data model, three layers.

Lab, techno-economics and industrial plants validate and correct each other.

Together they show where mineralisation works – including combinations across sectors that no single industry would find on its own.

  • Lab dataStandardised trials on hundreds of residues: how much CO2 each binds, how fast and under which conditions.
  • Techno-economicsOur techno-economic suite combines measured behaviour with plant cost, infrastructure and market data to judge a case as a whole: cash flow, CO2 balance and whether it is viable.
  • Industrial plantsLogged operation at scale feeds back real performance and corrects the lab and the models.