Development of potential uses for the residue from fluidized bed combustion processes. Quarterly technical progress report, March--May 1978
Because of basic differences in the composition of the spent bed residue and fly ash materials from FBC boilers, these materials should be collected separately and not mixed. Some conditioning or hydration of FBC residue is necessary in order to properly prepare the residue for use in structural compositions without subsequent detrimental volume expansion. The level of conditioning plays a significant role in the performance of the material. The extent of the conditioning must be more fully investigated, but may be related to the chemical composition of the residue. Chemical analyses of FBC materials indicate basic similarities of residues from boilers in which limestone was used as the sorbent material in the bed. Likewise, the composition of residues from boilers in which dolomite was used as the sorbent are similar to each other, although different from the limestone bed materials. Continued monitoring of stabilized road base specimens containing FBC residue under low temperature curing conditions has shown surprisingly good compressive strength development, although the pattern of strength gain is sometimes erratic. Of the compositions tested to date, involving FBC residue percentages ranging from 6 to 80 percent by weight, long-term compressive strength in excess of 2500 psi were obtained in nearly all cases. Proper blending of FBC residue and FBC fly ash seems to produce a material that can be extruded and fired into a synthetic lightweight aggregate product, although further refinement of the blend formulation is needed. Placement of FBC residue in uncovered stockpiles will result in a hardening or cementing of the exposed outer surface of the stockpile.
- Research Organization:
- Minnick (L.J.), Inc., Plymouth Meeting, PA (USA)
- DOE Contract Number:
- EF-77-C-01-2549
- OSTI ID:
- 6674485
- Report Number(s):
- HCP/T2549-18
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of potential uses for the residue from fluidized bed combustion processes. Quarterly technical progress report, September-November 1979
Development of potential uses for the residue from fluidized bed combustion process (Minnick). Quarterly technical progress report, June--August 1978
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COAL
FLUIDIZED-BED COMBUSTION
WASTE PRODUCT UTILIZATION
ROADS
BUILDING MATERIALS
SOLID WASTES
CHEMICAL COMPOSITION
ACID MINE DRAINAGE
ADSORPTION
CALCIUM SULFATES
CEMENTS
CONCRETES
FLY ASH
HYDRATION
PARTICLE SIZE
PELLETIZING
SCRUBBERS
SINTERING
STORAGE
SULFUR OXIDES
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
ENERGY SOURCES
EQUIPMENT
FABRICATION
FOSSIL FUELS
FUELS
MATERIALS
MOLDING
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SIZE
SOLVATION
SORPTION
SULFATES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
010800* - Coal
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014000 - Coal
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010900 - Coal
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320305 - Energy Conservation
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