High‑performance lime‑based solutions for next‑generation iron-and steelmaking
Across the iron and steel value chain, process stability, yield optimization and environmental performance are critical to maintaining competitiveness. Our calcium- and magnesium-based products enhance sintering and pelletizing performance and act as key fluxing agents in steel production - helping you control slag chemistry, stabilize operations and achieve consistent steel quality.
Ironmaking: from iron ore agglomeration to hot metal desulfurization
Optimizing sinter and pellet quality
Our calcium- and magnesium-based Calexor® products support your sintering and pelletizing operations by improving the strength, consistency and overall quality of iron ore agglomerates. Their reactive properties enhance green ball formation, increase high-temperature strength and support stable bed permeability - helping you improve plant productivity and reduce fuel consumption.
In the blast furnace, lime-enhanced sinter and pellets improve burden stability and help lower overall energy demand. By optimizing basicity ratios, enabling low-SiO2 pelletization alternatives and supplying essential MgO for slag fluidity, our products help you achieve consistent agglomerate quality, more stable furnace operation and cleaner, more efficient hot metal production.
Hot metal desulfurization (HMD)
Flucal® milled quicklime delivers safe, efficient desulfurization in ladle and torpedo cars.
Benefits for your operations:
- Lower slag volume and reduced iron losses
- Reduced reagent consumption
- Cleaner, more fluid slag
Available for co‑injection with magnesium or as Flucal® M premixed blends. We support you with technical expertise, plant trials and continuous process optimization.
Steelmaking: primary and secondary metallurgy
Primary metallurgy
Our solutions Basix Oxygen Furnace (BOF) steelmaking
Our lime‑based solutions are engineered to help you achieve stable BOF operations, high productivity and consistently clean steel.
Our fluxes help you:
- Form slag quickly and reliably
- Improve dephosphorization
- Produce cleaner steel
- Reduce refractory wear
- Increase metal yield
- Stabilize converter operation
Our solutions for Electric Arc Furnace (EAF) steelmaking
Our high-reactivity, high-purity lime and dolime support EAF operators in achieving stable furnace conditions, rapid slag formation and optimized energy consumption.
High-reactivity lime and dolime help you:
- Build slag faster
- Reduce power demand and associated emissions
- Improve furnace stability
- Lower operating costs
We support you with lime injection know-how, pilot testing and value-in-use modeling. With Lhoist, you gain a partner focused on metallurgical performance and long-term value.
Secondary metallurgy
Ladle Refining (LRF)
In ladle refining, control over slag chemistry, temperature and composition stability is critical to achieving target steel cleanliness and castability.
We support your LRF performance with solutions that help you achieve:
- Fast, clean slag formation
- Effective sulfur removal
- Stable temperature and composition control
- Reduced refractory wear
Our engineered fluxes are designed to deliver predictable refining conditions and consistent steel quality, heat after heat.
Argon Oxygen Decarburization (AOD)
In AOD refining, maintaining low carbon levels while preserving valuable alloy elements such as chromium requires precise slag control and stable chemistry.
Our solutions for stainless and specialty grades include:
- Low-carbon lime and dolime optimized for AOD
- Strong desulfurization and deoxidation performance
- Improved alloy retention
- Extended refractory life
- Stable chemistry, heat after heat
We support your AOD operations with solutions focused on metallurgical performance, process stability and long-term value.
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