Separation of flue-gas scrubber sludge into marketable products. Quarterly technical progress report, March 1, 1996--May 31, 1996
To reduce their sulfur emissions, many coal-fired electric power plants use wet flue-gas scrubbers. These scrubbers convert sulfur oxides into solid sulfate and sulfite sludge, which must then be disposed of. This sludge is a result of reacting limestone with sulfur dioxide to precipitate calcium sulfite and calcium sulfate. It consists of calcium sulfite, gypsum, and unreacted limestone or lime, with miscellaneous objectionable impurities such as iron oxides, silicates, and magnesium, sodium, and potassium oxides or salts. These impurities prevent many sludges from being utilized as a replacement for natural gypsum, and as a result they must be disposed of in landfills, which presents a serious disposal problem.
- Research Organization:
- Michigan Technological Univ., Houghton, MI (United States). Dept. of Metallurgical and Materials Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-93PC93214
- OSTI ID:
- 383051
- Report Number(s):
- DOE/PC/93214-T11; ON: DE96050437
- Resource Relation:
- Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Separation of flue-gas scrubber sludge into marketable products. Fourth year, first quarterly technical progress report, September 1, 1996--December 31, 1996 (Quarter No. 13)
Separation of flue-gas scrubber sludge into marketable products. Third year, first quarterly technical progress report Quarter No. 9, September 1, 1995--November 30, 1995
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
FLUE GAS
DESULFURIZATION
SLUDGES
WASTE PRODUCT UTILIZATION
MATERIALS RECOVERY
PROGRESS REPORT
FOSSIL-FUEL POWER PLANTS
SCRUBBERS
SULFUR OXIDES
GYPSUM
CALCIUM SULFATES
WASTE DISPOSAL
FLOTATION
LIMESTONE
CALCIUM CARBONATES
PARTICLE SIZE
ADSORPTION