Flue Gas Desulfurization Gypsum

The second most common use of CCPs is flue gas desulfurization (FGD) gypsum in wallboard. This material is produced by emissions control systems (scrubbers) that remove sulfur and oxides from power plant flue gas streams. Residues vary, but the most common uses in construction applications are FGD gypsum (or "synthetic" gypsum). This material is used in more than 40 percent of the gypsum panel products (wallboard) manufactured in the U.S. FGD gypsum can be used in cement production and geotechnical applications. It can also be used in self-leveling floor applications. The agricultural industry also uses this material to treat undesirable soil conditions and to improve crop performance.

Applications

  • Raw material for wallboard
  • Fill material for structural applications and embankments
  • Feed stock in the production of cement
  • Raw material in concrete products and grout
  • Ingredient in waste stabilization and/or solidification