Blast Furnace Slag Analysis

Iron and steel production leaves behind a dark, glassy-looking slag as a byproduct. Known as blast furnace slag, it is valuable in a variety of industries because it has various industrial applications. Once blast furnace slag is ground and granulated, these are just a few of the industrial applications where it is used:

  • as an additive to cement to increase its strength and durability
  • in construction, as an additive in insulation, roof aggregate, etc.
  • in agriculture and soil amendment

Because of the value and recyclability of blast furnace slag, it is standard practice in many iron and steel production facilities to collect the slag for resale. In order to successfully sell the slag, the facilities must be able to accurately determine its composition. A buyer will always have specific composition and quality requirements for blast furnace slag in order to ensure its suitability for specific industry applications. Each application of the slag by-product requires a different chemical composition, so buyers from different industries will have different specifications.

Contact Bruker today to learn how our XRF analyzers can help you easily find buyers for your blast furnace slag.

Blast Furnace Slag Analysis with Bruker’s S1 TITAN XRF Analyzers

Because different buyers are looking for slag of slightly different composition, furnace slag producers must have a fast, cost-effective, accurate way to determine the elemental composition of their slag. Handheld x-ray-fluorescence (XRF) instruments can be the ideal tool for the onsite elemental analysis of blast furnace slag, with the ability to determine the concentration of elements in slag from ppm levels to 100%. The most accurate analysis is performed in the LAB using fusion beads on either the S2 PUMA or the S8 TIGER.

Bruker’s S1 TITAN line of handheld XRF analyzers can quickly and accurately determine the presence and quantity of elements that can be present in blast furnace slag; specifically, these elements are magnesium, aluminum, silicon, sulfur, potassium, calcium, titanium, manganese, iron, etc using our GEOCHEM application. The S1 TITAN line has several key advantages in the analysis of blast iron slag and other applications in the iron and steel production industries:

  • Analyze light elements (Mg-S) in under a minute without the use of helium or vacuum purges with the S1 TITAN LE
  • Light-weight, ergonomic design for all-day use
  • Useful for determination of elemental composition or alloy grade at all steps of the iron and steel manufacturing process:

    • Incoming materials analysis
    • PMI of finished components
    • Inventory
    • Blast furnace slag analysis

  • Highly accurate analysis of even trace quantities of important elements