What Magsort does

Magsort Oy is a Finnish industrial decarbonization company that has developed a proprietary dry slag processing technology targeting the steel, cement, and waste-to-energy sectors—industries that together account for more than 15% of global CO2 emissions. The company's core proposition is a 100% recycling solution that extracts all steel trapped in steel slag (delivering it at 80-95% purity, twice the recovery rate of traditional metal recovery plants) and refines the remaining slag into zero-CO2 raw materials for cement production. Founded in 2014 and headquartered in Espoo, Finland, Magsort is a private limited company (Business ID 2607262-7) with 11-50 employees and has disclosed a single $15M funding round in November 2021. The company identifies three customer verticals: steel manufacturers (maximizing slag steel recovery), cement producers (low-CO2 clinker and cement inputs that can replace up to 50% of Granulated Blast Furnace Slag), and waste-to-energy operators (recovery of previously inaccessible metals from incinerator bottom ash in a completely dry process).

Magsort's product portfolio consists of five core offerings: a steel slag processing solution capturing steel at 80-95% purity; ultrafines and aggregate refined from slag for low-CO2 cement; a clinker production material delivering 85% CO2 savings and 86% throughput gains by weight; a cement production material replacing up to 50% of GBFS; and an incinerator bottom ash (IBA) processing line that recovers 3x the value from IBA metals without the wastewater burden of wet milling. The technology is differentiated by being a fully dry process—eliminating wastewater issues—and by capturing fine steel fractions that traditional metal recovery plants cannot extract.

Magsort generates revenue through slag processing services delivered via direct enterprise partnerships with large industrial clients, with revenue mechanics tied to transaction fees for processing services or sale of recovered steel and refined slag products (no public pricing disclosed). The go-to-market is enterprise field sales targeting major steel, cement, and waste-to-energy operators. The company's first industrial-scale deployment is a 2025 pilot with EMSTEEL Group at its Al Ain cement plant in the UAE, achieving up to 35% CO2 emissions reduction and 20% production increase. Current operating geographies span Europe (Finland) and the Middle East (UAE). Leadership was refreshed in 2025 with Kalevi Kostiainen appointed CEO (formerly Head of Sales since 2023 and an early investor) and Linda Lindroos appointed CFO (formerly CFO of Fifax), positioning the company for its commercialization phase.

Name

Magsort

Legal name

Magsort Oy

Website

https://magsort.fi

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Magsort Oy is a Finnish industrial decarbonization company that has developed proprietary dry slag processing technology to extract steel from steel slag and refine residues into zero-CO2 raw materials for the cement, steel, and waste-to-energy industries.

Ownership category

akta.pro rank

Product category

Industrial Decarbonization Services

NAICS

Primary Metal Manufacturing (331), Iron and Steel Mills and Ferroalloy Manufacturing (331110)

SIC

Metal Mining (1000), Secondary Smelting & Refining Of Nonferrous Metals (3341)

akta.pro primary industry

Solid–Liquid Separation & Dewatering (Thickening, Filtration, Clarification) (IMAKALAF)

akta.pro secondary industries

Iron Ore Tailings, Waste Management & Reclamation (Closure, Remediation) (IMAKAAAI), Washing, Scrubbing & Classification Equipment (IMAHAMAI)

Keywords

• Slag processing technology
• Steel slag recycling
• Cement decarbonization
• Incinerator bottom ash processing
• Industrial CO2 reduction

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Steel slag processing services: Magsort provides slag processing services to steel plants, extracting steel for回收 and refining remaining slag into cement raw materials. Revenue likely generated through processing fees or sale of recovered steel and refined slag products.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Magsort provides industrial slag processing technology that extracts all steel trapped in steel slag at 80-95% purity and refines the remaining slag into zero-CO2 raw materials (ultrafines and aggregate) for the cement industry. The completely dry process is also applied to incinerator bottom ash (IBA) for waste-to-energy plants, recovering previously inaccessible metals including the finest fractions without generating wastewater.

Product overview

Magsort is a decarbonization company offering a unified industrial slag processing solution that extracts all steel trapped in steel slag while refining the remaining slag into valuable zero-CO2 raw materials. Their solution portfolio consists of five core offerings: Steel Slag Processing (captures steel at 80-95% purity, twice the amount of traditional solutions), Ultrafines and Aggregate for Cement (zero-CO2 cement inputs), Clinker Production Material (85% CO2 savings, 86% throughput increase), Cement Production Material (replaces up to 50% of GBFS), and IBA Processing for waste-to-energy plants (recovers precious metals in dry process, 3x value). The company also serves three industries: Steel, Cement, and Waste-to-energy, with slag processing technology achieving up to 35% CO2 emissions reduction in cement applications and 17% in steel applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Steel Slag Processing Solution Industrial processing solution for steel manufacturers that captures all steel trapped in steel slag at 80-95% purity, delivering twice the steel recovery of traditional metal recovery plants (MRP). The remaining slag is refined into zero-CO2 raw materials for the cement industry, forming a 100% recycling loop.
• Ultrafines and Aggregate for Cement Zero-CO2 raw materials refined from steel slag, supplied to cement manufacturers for use in low-CO2 cement production as a 100% recycling alternative to traditional inputs.
• Clinker Production Material Refined steel-slag-derived input for clinker production that saves 85% of its weight in CO2 emissions and increases throughput by 86% of its weight, offered to cement manufacturers.
• Cement Production Material (GBFS Replacement) Steel-slag-derived material for cement production that can replace up to 50% of Granulated Blast Furnace Slag (GBFS), effectively doubling material availability for low-CO2 cement.
• Incinerator Bottom Ash (IBA) Processing Processing solution for waste-to-energy plants that recovers previously unavailable metals from incinerator bottom ash, including the finest fractions, using a completely dry process that eliminates wastewater and unlocks three times as much metal value.

Quantifiable outcome

• Cement plants can reduce CO2 emissions by up to 35% while increasing production by 20%
• +7 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• EMSTEEL GroupcoreStrategic or Co-development Partner · 29 May 2025EMSTEEL Group, one of the largest publicly traded steel and building materials manufacturers in the region, has partnered with Finnish company Magsort to produce decarbonized cement. The partnership involves an industrial-scale pilot at EMSTEEL's Al Ain cement plant using Magsort's slag processing technology, which can achieve up to 35% CO2 emissions reduction while increasing production by 20%. This represents the first industrial-scale use of Magsort's cement decarbonization technology.

Scale indicators10 records

Recent moves5 records

Expansion highlights4 records

Emerging players

• CarbonOrO: Canadian startup injecting CO2 into concrete to produce low-carbon building materials; addresses the same cement/concrete decarbonization procurement decision as Magsort at cement producers and developers.
• Solidia Technologies: US company commercializing a reduced-CO2 cement and concrete system using a non-hydraulic binding process; competes for the same decarbonization budgets at cement and concrete manufacturers as Magsort.
• Brimstone: California-based startup making carbon-negative Portland cement from calcium silicate instead of limestone; serves cement manufacturers seeking low-CO2 alternatives, overlapping with Magsort's cement-decab customer segment.
• Carbon Upcycling Technologies: Canadian startup that uses CO2 to produce supplementary cementitious materials from industrial byproducts including steel slag; directly overlaps Magsort's slag-to-cement feedstock thesis and target customer base in cement producers.
• Boston Metal: US-based company developing molten oxide electrolysis for carbon-free steel production; addresses steel decarbonization for the same steel majors Magsort supplies with slag processing solutions, addressing adjacent decarbonization budgets.

Broad incumbents

• Metso: Finnish-listed mining and metals processing equipment OEM serving the same ferrous/industrial customers, with comparable size and similar end-market exposure to steel slag, beneficiation and comminution; potential competitor and channel for Magsort's slag processing technology.
• FLSmidth: Danish global supplier of cement and mining process equipment with growing exposure to cement decarbonization, alternative fuels and material processing; overlapping industrial-customer GTM and adjacent process-equipment footprint to Magsort's slag processing technology.
• Eco Material Technologies: US producer of supplementary cementitious materials and alternative binders from coal ash, slag and other industrial byproducts; broader portfolio player targeting the same GBFS-replacement and low-CO2 cement input market Magsort serves.

Direct peers

• CarbonCure Technologies: Canadian cleantech company that injects captured CO2 into ready-mix concrete to reduce cement-related emissions; targets the same cement decarbonization buyers as Magsort with an analogous technology-sale motion to industrial concrete producers.

Others

• CEMEX Ventures portfolio (incl. Carbon Neutral Cement initiatives): CEMEX's corporate venture arm investing in low-carbon cement and supplementary materials startups; relevant ecosystem participant and potential customer or partner for slag-to-cement technologies such as Magsort's.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/magsort-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Magsort