Calm, hazy aerial view of a Nordic/European industrial skyline at dawn — steel-production infrastructure and mineral-processing atmosphere. Not footage of an operating LithoBind facility.

Turning steel slag and CO₂ into valuable materials

We are developing an integrated process that converts steelmaking slag and CO₂ into precipitated calcium carbonate (PCC) and low-carbon cementitious binders

Interested in hearing more? Reach out to our team.

Reach out to our team See how it works ↓

Solution

Turning steelmaking side streams into two industrial materials

LithoBind is an integrated solution that recovers value from selected steelmaking slag by mineralizing it into PCC. The solution then turns the remaining PCC residue mineral stream into a cementitious binder material

01 / 03

Steel production creates two side streams: steel slag and CO₂

Steel production creates steel - but it also generates two challenging side streams: steelmaking slag and CO₂ emissions

INPUT

Steelmaking raw materials

OUTPUT

Steel, CO₂, and slag

01 / 03

Steel production creates slag and CO₂

which are both challenging side streams

STEEL FACTORY

STEEL

CO₂

SLAG

PCC

CEMENTITIOUS
BINDER

PAPER

PLASTICS

CEMENT

CONCRETE

For partners

Partner with us to build our demo plant

We are gathering and preparing the initial partner group for our first LithoBind demo plant. The demo plant is intended to validate our process in terms of technology and business enabling us to move to industrial scale and beyond

We are looking for partners in steel producers, PCC producers, and cement & concrete producers

Partner benefits

Reduced emissions translating to reduced carbon costs

Reduced waste handling costs

We're looking to collaborate on:

Slag feedstock validation

Site integration and requirement knowledge

Potential demo plant site hosting

Partner benefits

Reduced emissions translating to reduced carbon costs

Reduced waste handling costs

We're looking to collaborate on:

Slag feedstock validation

Site integration and requirement knowledge

Potential demo plant site hosting

Partner benefits

Local, sustainable source of PCC with a competitive production cost

We're looking to collaborate on:

Application specifications

Material characterization

Customer-specific qualification

Potential interest for offtake

Partner benefits

Local, sustainable source of cementitious binder with a competitive production cost

Can support sustainable building certification

We're looking to collaborate on:

Material testing and requirements

Validation in relevant product settings

Potential interest for offtake

Interested in hearing more? Reach out to our team.

Reach out to our team

TECHNOLOGY

Two linked technologies being developed into an integrated solution based on research at Aalto University.

Steel slag-to-PCC technology

Stage: Validated in a pilot environment

Calcium extraction from steelmaking slag and producing precipitated calcium carbonate (PCC), developed +20 years of research at Aalto University and covered by granted patents.

NEXTTesting suitable feedstocks and the process at a demonstration scale

PCC residue-to-cementitious material technology

Stage: Standardized performance testing underway

Conversion of the remaining PCC residue mineral stream into a cementitious material. Covered by a patent application filed in 2025. Standardized performance testing is ongoing against relevant standards, with certification and market-entry route under assessment.

NEXTFinishing standardized testing, deepening validation for the most promising use cases

Interested in hearing more about the technology? Reach out to our team.

Reach out to our team

The team behind the effort