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MATERIAL ANALYTICS IN THE AREA

Slags

A Resource-Saving and Valuable By-Product

In metallurgy, slag refers to the non-metallic by-product that solidifies in a glassy or crystalline form, which is indispensable in metal extraction during ore smelting. According to the United States Geological Survey, approximately 460–600 million tons of iron and steel slags (blast furnace and steel mill slags) were produced worldwide in 2016.

However, slag is not a waste product. After cooling and the addition of slag binders, the slag undergoes various processing steps and is subsequently used as a high-quality secondary raw material in the cement industry, civil engineering, and agriculture. This helps conserve primary raw material resources.

 

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Analysis of Slags

Depending on the process, various types of slags are produced, which we can analyze for their composition:

  • Blast Furnace Slag (BFS): Produced during the creation of pig iron

  • Steel Mill Slag (SMS): Produced during the creation of crude steel or steel and is differentiated into converter slag (BOF slag) or electric arc furnace slag (EAF slag)

  • Granulated Blast Furnace Slag: Used as ground granulated blast-furnace slag (GGBFS)

Versatile By-Product

Potential Recycling Product

Especially since the introduction of the new Substitute Building Materials Ordinance (EBV), the reusability of slags has gained prominence.

The use of slags, for example, in the construction industry or road construction, proves to be highly sustainable and resource-saving.

We analyze your steel mill slag (SMS), electric arc furnace slag (EAF slag), or blast furnace slag (BFS) for their chemical composition and check whether they are suitable as recycling materials.

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Reprocessing of Old Slags

Unearthing Buried Treasures

The technology for slag processing has evolved over the past decades. As a result, old slags are being removed from landfills and reprocessed.

These slags often still contain many metallic components that can be recycled using modern processes, conserving both resources and finances, and creating more space in landfills.

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Chemical Analysis of Generated Slag

Insights into Processes

Slags are used in steel production and occur in metallurgical processes in a liquid form. In these processes, they float on the molten metal due to their lower density, serving both as thermal insulation and binding impurities like sulfur and carbon from the pig iron.

The chemical composition of the slag can provide insights into the processes and the raw materials used.

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Versatile Analytical Methods

We determine the chemical composition and mineral phases of slags using various analytical methods:

  • X-ray Fluorescence Analysis (XRF)

  • X-ray Diffraction Analysis (XRD)

  • ICP-OES

  • Combustion Analysis

Your contacts in the area of Slags

For enquiries about these analyses, please contact our laboratory team at anfrage@industrial-lab.de or get in touch with your contact person:

Stephan Köller

Stephan Köller

Head of Team Inorganics
 02762 9740 - 93
 Send e-mail

Florian Droste

Florian Droste

Head of department
Inorganics / Sample Preparation

 02762 9740 - 74
 Send e-mail

Johan Mouissi

Johan Mouissi

Inorganics
 02762 9740 - 85
 Send e-mail