General Areas Served

Crude steel production begins with the reduction process, whereby iron ore reacts with carbon sources inside the blast furnace. It is imperative that refractory products used inside the blast furnace are resistant to these thermomechanical and thermochemical reactions.


Saint-Gobain Performance Ceramics & Refractories designs, engineers and supplies a comprehensive range of high quality refractory products and solutions, specifically developed for blast furnaces.

An extensive range of refractories ideal for use downstream of the blast furnace is also available, including:

  • High quality tap hole mixes, customized to meet customer requirements
  • Concretes with excellent performance characteristics, ideal for troughs and runners
  • Alumina silicon carbide carbon bricks for torpedo ladles


Saint-Gobain Performance Ceramics & Refractories is also focused on developing materials for the evolving needs of DRI (Direct Reduced Iron) processes. Refractory requirements increase in line with H2 usage.


Saint-Gobain Performance Ceramics & Refractories’ extensive experience in related industries (for example, pure H2 atmosphere) makes it uniquely suited to providing optimal solutions to meet this challenge.


Saint-Gobain Performance Ceramics & Refractories is currently working to become carbon neutral by 2050 – a goal shared across much of the ironmaking industry.


Solution By Application

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Blast Furnace Refractories

Refractory Solutions for Increased Blast Furnace Service Life

Crude steel production begins with the reduction process, where the iron ore reacts with carbon sources inside the blast furnace. The blast furnace requires different types of refractory products with resistance to thermo-mechanical and thermo-chemical reactions.

With blast furnace service lives typically extending to 20 years or more, it imperative that the correct lining design is selected and maintained. New requirements around H2 injection, CO2 reductions and financial constraints add extra layers of complexity to these decisions, while shortcuts and poor choices can lead to expensive unplanned stoppages.


Saint-Gobain Performance Ceramics & Refractories has over 50 years of experience in blast furnace refractory design. The company continually develops new and improved materials, adapting to industry trends and evolving customer requirements.


Saint-Gobain Performance Ceramics & Refractories is the clear choice for supplying a wide range of refractory linings. The company supplies full packages of refractory materials, specifically developed for the harsh conditions typical of blast furnaces. Teams of qualified and experienced engineers will work with customers to develop a budget feasibility study, as well as providing comprehensive refractory designs (including thermal studies) and installation supervision. 

Extended service life
Easy operation
Reduced CO2 emissions

Conventional coke and charcoal blast furnace require specific types of refractories to ensure smooth operation.

Saint-Gobain Performance Ceramics & Refractories provides a comprehensive range of products for conventional coke and charcoal blast furnace, many of which can be customized according to customers’ requirements and operating conditions.

Saint-Gobain Performance Ceramics & Refractories Ceramic Cup

The 3rd generation Ceramic Cup wall in Coranit SlagR shows better resistance to iron, slag and Alkali corrosion with very good corrosion resistance to slag and liquid iron at high temperature (1,400°C - 1,600°C).
The ceramic cup pad made from high alumina MS4 Mullite or MS4R are highly resistant to iron and designed in combination with the Ceramic Cup providing a significant benefit to blast furnace operators in terms of lifetime extension and operational efficiency.


How was the Coranit Ceramic Cup developed?

Two sites in Germany - Thyssen's Hamborn and Ruhrort sites - first installed the Ceramic Cup technology in 1984. The first generation of Ceramic Cup was based on chrome-alumina in the form of large precast Monochromcor® blocks, while the second generation was corundum in the form of large precast Mono Coral® blocks. These blocks helped to reduce hearth stresses while addressing issues with chrome VI. The third generation of Ceramic Cup products was developed from pressed SiAlON bonded corundum Coranit bricks and first installed in 1993. This further reduced stresses while offering improved iron erosion resistance. First installed in 2020, Coranit SlagR offers excellent resistance to molten iron and slag and unprecedented hearth lining protection.

What are the benefits of utilizing the Coranit Ceramic Cup?

The Coranit Ceramic Cup is a popular choice with Saint-Gobain Performance Ceramics & Refractories' customers, boasting over 98 references worldwide and a tendency for customers to reorder due to its 9+ years of service life. The Coranit Ceramic Cup's advanced design and material quality provide significant improvements in service life and operational efficiency – factors that are increasingly important to blast furnace operators. Under typical operating conditions, heat flow at the hearth wall is reduced from 15 kW/m2 to 5 kW/m2. This helps the furnace retain heat, allowing it to be restarted faster after planned or unplanned stoppages and affording the furnace additional protection in case of water leakages. Most notably, this reduction in heat flow also lowers the furnace's carbon footprint.

What are the benefits of working with Saint-Gobain Performance Ceramics & Refractories?

Saint-Gobain Performance Ceramics & Refractories offers a robust combination of continuous development and provision of the highest quality customized refractory product solutions, full design and engineering services, supervision and ongoing support – a complete, reliable and cost-effective service through a furnace's entire service life.


Brochures & Flyers
Ironmaking Ceramic Cup Savings - Flyer

Coranit AL extends hearth wall life by approximately 10 years, our latest development is expected to increase hearth wall life by a further 2 to 3 years.

PDF | 232.9 KB
Brochures & Flyers
Ironmaking Blast Furnace - Brochure

Supplying all required refractory products specifically developed to extend Blast Furnace lifetime.

PDF | 3.24 MB
Brochures & Flyers
Ironmaking Coranit Ceramic Cup - Brochure

Ironmaking production begins with the reduction process, where the iron ore reacts with the carbon sources (coke) inside the blast furnace.

PDF | 845.39 KB
Novel Castable Technology for a Safe and Extended Lifetime of Blast Furnace Main Troughs- Article

Crude steel production begins with the reduction process, where the iron ore reacts with carbon sources inside the blast furnace. The blast furnace

PDF | 306.12 KB