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Granulated Blast Furnace Slag (GBFS) is a non-metallic co-product that’s produced in the process of iron manufacturing. When molten slag is passed through high-volume high-pressure water sprays, a glassy sand-like (granulated) material is formed, known as Granulated Blast Furnace Slag. The color of this co-product is quite similar to that of beach sand.

Granulated Blast Furnace Slag (or GBFS), when ground into a fine powder is called Ground Granulated Blast Furnace Slag (or GGBS). Ground Granulated Blast Furnace Slag is widely used in the construction industry as a cement replacement to enhance the strength, durability, and life span of concrete structures.

Applications of Granulated Blast Furnace Slag (GBFS) include:

  • Slag Cement
  • Glass manufacturing
  • Trace elements in agriculture
  • Concrete block manufacturing
  • Reinforced earth embankments
  • Sporting field sub-base (for drainage)
  • Filtration medium
  • Mine backfilling