Characterization, extraction, and reuse of coal-gasification solid wastes. Volume 3. Technical and economic feasibility of bulk utilization and metal recovery for ashes from an integrated coal-gasification facility. Final report, April 1983-June 1986

Technical Report · Sun Jun 01 04:00:00 EDT 1986

OSTI ID:6257828

Manz, O E; Hassett, D J; Laudal, D L; Ellman, R C

Coal-gasification waste products, including those from Lurgi gasification, have different properties from the combustion ashes, especially with respect to mineralogy. To date, comparatively little effort has been directed toward the investigation of bulk utilization or metals extraction. This project was directed towards correction of that deficiency by matching properties of the Great Plains Gasification Plant gasifier ash and the Antelope Valley Power Plant combustion explored: mineral wool; sulfur concrete; high-flexural-strength ceramics; ceramic glazed wall tile and vitrified floor tile; dual concrete replacement; road stabilization; blended cement; and recovery of aluminum. Mineral wool of similar physical character to commercial wool and at lower potential cost was produced using the ashes from the GPGA complex. Sulfur concrete utilizing 80% ash and 20% modified sulfur developed flexural and compressive strengths in excess of 2250 and 6000 psi, respectively. A vitrified ceramic product with flexural strength above 7800 psi was produced from a mixture of 50% AVS scrubber ash 45% sand, and 5% clay. By using a total ash mixture of 26% gasifier ash and 74% combustion ash, a very satisfactory, economical, and durable road-base material was developed. The replacement of up to 50% of the cement in concrete with AVS scrubber ash produces higher strength. A modified lime-soda sinter process for aluminum recovery was developed, but is not economical.

• Research Organization: North Dakota Univ., Grand Forks (USA). North Dakota Mining and Mineral Resources Research Inst.
• OSTI ID: 6257828
• Report Number(s): PB-87-215778/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
010800* -- Coal
Lignite
& Peat-- Waste Management
AEROSOL WASTES
ASHES
BUILDING MATERIALS
CERAMICS
COAL GASIFICATION
COAL GASIFICATION PLANTS
CONCRETES
ELEMENTS
EQUIPMENT
FLY ASH
GASIFICATION
INDUSTRIAL PLANTS
INDUSTRIAL WASTES
LURGI PROCESS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
NONMETALS
POLLUTION CONTROL EQUIPMENT
PROCESSING
RECOVERY
RESIDUES
SCRUBBERS
SOLID WASTES
SULFUR
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES