# HBIS Group

> HBIS has a disclosed industrial lane that is more useful than a generic green-steel line: steel slag and captured carbon are being directed toward value-added products. The first decision is product quality, process yield and legal acceptance.

- Industry: Metals & Mining
- Collection: Active
- Materials: Steel
- Evidence through: 2026-09-18
- Canonical URL: https://www.materialtransition.com/library/hbis-group

## Material inputs to resolve

Steel, green metallurgy, steel-slag utilization and specialty steel

HBIS's public disclosures describe hydrogen and scrap-based steel routes, LCA work across the value chain, and a Tangsteel New Plant project that uses carbon dioxide, flue gas and steel slag to make green construction materials. HBIS also publishes 2025 ESG reporting. Public sources do not disclose the project's full product specification, sustained throughput, regulatory status or customer contract.

**2025** Current sustainability and green low-carbon reports listed

**3 residues** Steel slag, tailings residue and slag residue named

**Light CaCO3** Company-described output

**Open** Plant, standard and customer evidence

- Steel slag, tailings residue and slag residue
- Scrap steel, iron inputs and energy carriers
- Water, additives and process-control inputs

### Outputs and residuals to resolve

- Steel and specialty steel products
- High-purity light calcium carbonate where process and standards permit
- Managed residuals and nonrecyclable fractions

**First decision:** Treat the slag-and-carbon route as a product-qualification project. Validate feedstock chemistry, impurities, process yield, product specification, regulatory classification and end-market acceptance before using circular-economy economics.

## Reported route

HBIS says it has used steel slag, tailings residue and slag residue to produce high-purity light calcium carbonate.

#### Steel transition context

HBIS describes green-hydrogen steel, higher-scrap routes and other low-carbon process work.

#### Current disclosure

The group's sustainability hub lists 2025 sustainability and green low-carbon reports.

#### Evidence boundary

The public material does not state the project's plant, feedstock volume, product grade, safety characterization, permit scope or customer offtake.

### Decision boundary

The point is not that HBIS can use steel slag. The point is whether a mineral product made from a defined residue is clean, consistent, compliant and valuable enough to substitute for a virgin product in a named market.

## Material flow map

| Material or stream | Qualification gate | Process or destination | Evidence still needed |
|-|-|-|-|
| Residue | Qualification gate | Conversion route | Evidence still needed |
| Steel slag | Chemistry, free lime, metals and particle profile | Mineral processing | Site, conditioning method and yield |
| Tailings or slag residue | Mineralogy, moisture and hazardous constituents | Calcium-carbonate production route | Blend ratio, impurity control and regulatory status |
| Light calcium carbonate | Purity, particle size and application performance | Industrial end market | TDS, COA, customer trial and purchase specification |

This is a public screening map. It separates company-disclosed flows from open qualification work. It does not convert a destination into a buyer or an announced ambition into operating capacity.

## Three defensible entry lanes

#### Build a residue-to-product dossier

The disclosed route needs a chemistry and quality file before it becomes a commercial offer.

**Next evidence:** Representative samples, assay, leachability, process flow and product specification.

#### Separate mineral recovery from steel decarbonization

Higher scrap and hydrogen steel do not prove that a slag-derived product has a viable market.

**Next evidence:** Independent product economics, standard and buyer qualification.

#### Locate the operating asset

A group announcement is not a plant-level material lane.

**Next evidence:** Facility, responsible entity, permit record, capacity and technical owner.

## Evidence register

- **Sustainable operations reports** HBIS Group https://www.hbisco.com/sustainable [1]
- **Green low-carbon competitiveness** HBIS Group, June 2025 https://www.hbisco.com/news/hbis/group/t694/2916 [2]
- **Steel Sustainability Champion** HBIS Group https://www.hbisco.com/en/news/group/t698/2856 [3]
- **HBIS Sustainable Management** HBIS Group https://www.hbisco.com/en/sustainable [4]
- **HBIS CCUS: from carbon reduction to value creation** HBIS Group https://www.hbisco.com/en/news/group/t713/3157 [5]
- **2025 ESG and Sustainability Reports** HBIS Group https://www.hbisco.com/en/news/group/t713/3293 [6]
- **HBIS 2024 Sustainability Report** HBIS Group https://www.hbisco.com/uploads/2025-07-16/3b22cfef-81ee-429e-a391-d9cf92fd715f1752634475206.pdf [7]

Source hierarchy: filings and company disclosures first. The brief states what those sources support and leaves the unresolved plant, grade, permit, buyer and mass-balance questions explicit.

## Material Transition editorial interpretation

HBIS has a disclosed steel-slag route that is more useful than a generic "green steel" line: steel slag, tailings residue and slag residue used to produce high-purity light calcium carbonate. The first decision is product quality and legal acceptance. The next useful working session starts with: Treat the calcium-carbonate route as a product-qualification project. Validate feedstock chemistry, impurities, process yield, product specification, regulatory classification and end-market acceptance before using circular-economy economics.

## Sources

- [1] Sustainable operations reports - https://www.hbisco.com/sustainable
- [2] Green low-carbon competitiveness - https://www.hbisco.com/news/hbis/group/t694/2916
- [3] Steel Sustainability Champion - https://www.hbisco.com/en/news/group/t698/2856
- [4] HBIS Sustainable Management - https://www.hbisco.com/en/sustainable
- [5] HBIS CCUS: from carbon reduction to value creation - https://www.hbisco.com/en/news/group/t713/3157
- [6] 2025 ESG and Sustainability Reports - https://www.hbisco.com/en/news/group/t713/3293
- [7] HBIS 2024 Sustainability Report - https://www.hbisco.com/uploads/2025-07-16/3b22cfef-81ee-429e-a391-d9cf92fd715f1752634475206.pdf

From the Material Transition company brief library: https://www.materialtransition.com/library/hbis-group