Chemical and mineralogical transformations of wastes from dry flue-gas desulfurization techniques
Book
·
OSTI ID:43146
- Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research
Flue gas desulfurization results in large amounts of solid waste by-products. The large amounts of sulfates and sulfites in these materials react with the calcium hydroxide (Ca(OH){sub 2}) present to form calcium sulfo-aluminates, the most important mineral of this group being ettringite. The nature of the mineralogical reactions has a large bearing on the utilization potential of the materials. Reactions controlling the formation, composition and disintegration of ettringite are critical in determining the overall stability and strength of cements and concretes derived from dry FGD materials. Mineral reactions have been examined using X-ray diffraction and scanning electron microscope.
- OSTI ID:
- 43146
- Report Number(s):
- CONF-940930--
- Country of Publication:
- United States
- Language:
- English
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