Ironmaking

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

Click on your application to find more:

Troughs & Runners

High Performance and Operational Safety

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.

Trough operations typically see refractory linings exposed to constant thermal cycling and oxidizing environments, resulting in standard Al2O3-SiC-SiO2-C castables becoming damaged.


This leads to a notable reduction in the trough campaign life and the need for emergency repairs, increased refractory unit consumption and unplanned stoppages.


Saint-Gobain Performance Ceramics & Refractories’ unique and innovative castable technology ensures a reliable and risk-free campaign while reducing the number of hours spent on trough repairs.

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Rapid installation - Faster repair
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Extended service life
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Reduced trough downtime 

Features and Benefits

Product Characteristics Applications and Benefits
Ultra-low Cement Castable  High oxidation, erosion, and corrosion resistance  High performance materials customized for all regions of the casting floor. Reduced maintenance cycles 
Dry Mix Lining Water-free application  Extremely fast repairing materials, specifically designed for secondary runners. 
Shotcrete  High performance, low rebound, fast repair  Easy to pump and high corrosion resistance castables for cold and hot repairs. Suitable for all regions of the main trough and secondary runners. 
Spinel Containing Castable  High resistance to FeO corrosion  Extended campaign life for metal line and iron runners. 
Colloidal Silica Castables  High performance, rapid drying  Zero-cement material ensuring reduced repair time of main trough and secondary runners.  
Pre-cast Blocks  Controlled environment  Lower repair time and longer campaign for skimmers and secondary runners 
High Performance Gunning Mix  High adhesion  Highly versatile, suitable for all types of repairs in any region of the casting floor. 
Ramming Mix  High workability  High performance and easy to apply mix for quick repairs at any regions of the casting floor. 
High Oxidation Resistance Castables  Very high oxidation resistance  Extremely high oxidation resistance ensures long service life. 

FAQ

What are the most suitable materials for use in troughs and runners?

State-of-art Al2O3-SiC-C castables can be used. However, several recent technologies offer specialist properties including:

  • Enhanced safety
  • Improved service life
  • Rapid drying
  • High corrosion resistance against molten slags and iron
  • Ultra-high oxidation resistance

 

Saint-Gobain Performance Ceramics & Refractories’ team of qualified and experienced specialists is on hand to discuss any material or application requirements.

Why is oxidation resistance important in a trough and runner material?

Castable components as SiC and C are highly susceptible to oxidation. This results in the production of SiO2 and CO/CO2, which can impact material properties, resulting in increased porosity, loss of texture and mechanical resistance.

 

Oxidation poses a particular risk when this occurs close to backup linings, ultimately leading to increased wear speed and refractory consumption.

Documents

Brochures & Flyers
Ironmaking Blast Furnace - Brochure

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

PDF | 3.24 MB
Iron-Making-Blast-Furnace-Brochure-Web-202338
Articles
Ironmaking Solutions to Extend Blast Furnace Lifetime - 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
Iron-Making-2019-Novel-Castable-Technology-Troughs---Runner-Technical-Article-202325
Brochures & Flyers
Ironmaking Trough Runners - Brochure

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

PDF | 941.93 KB
Iron-making-Trough-Runners-brochure-web-202401