Operating and capital costs of producing fired structural products from waste coal ash. Report No. 98

Conference · Tue Oct 01 04:00:00 EDT 1974

OSTI ID:5035649

Humphreys, K K

A major deterrent to the use of the coal in boiler systems is the emission of finely divided flyash (pulverized fuel ash) from the exhaust stacks. When pulverized coal is fired in an electric utility boiler, about 70--80 percent of the ash is collected by mechanical or electrical means. The remaining 20--30 percent is collected in the furnace bottom. Capital investment required to collect ash and the resulting operating costs often add substantially to the cost of using coal as a fuel. In addition, large costs are incurred in disposing of the ash. In an effort to develop new and expanded uses for flyash, the Coal Research Bureau of West Virginia University under contract to the U.S. Office of Coal Research has been studying the problems of ash utilization. This research has resulted in the development of a highly profitable process for manufacturing brick, block, and other structural products containing over 97 percent coal ash. The process is gaining commercial acceptance in the U. S., Canada, and Europe and promises to be a major new use for waste coal ash. The present paper reviews the technology of the process and presents a cost engineering analysis of its economic potential including both capital and operating costs.

• Research Organization: West Virginia Univ., Morgantown (USA). Coal Research Bureau
• OSTI ID: 5035649
• Report Number(s): CONF-740790-1; CONF-741011-2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ADDITIVES
AEROSOL WASTES
ALKALI METAL COMPOUNDS
ASHES
BRICKS
BUILDING MATERIALS
ECONOMICS
FLY ASH
FOSSIL-FUEL POWER PLANTS
MANUFACTURING
MATERIALS
OXYGEN COMPOUNDS
POWER PLANTS
RESIDUES
SILICATES
SILICON COMPOUNDS
SLAGS
SODIUM COMPOUNDS
SODIUM SILICATES
THERMAL POWER PLANTS
USES
WASTE PRODUCT UTILIZATION
WASTES