High-volume, high-value usage of flue gas desulfurization (FGD) by-products in underground mines. Phase 1: Laboratory investigations; Quarterly report, April--June 1994

Technical Report · Thu Sep 01 00:00:00 EDT 1994

OSTI ID:10105322

Activities included the collection of a second sample set consisting of scrubber material, fly ash and lime from a conventional scrubber system. The chemical and physical characterization of the Archer Daniel Midland (ADM) FBC material included particle size analysis and elemental analysis. Field trips were made to the landfill site managed by the Freeman United Coal Company where the ADM material is currently being managed. The objective of the trips was to examine the changes of the material with time. The fresh hydrated material was characterized by high strength and hardness and contained ettringite and anhydrite. The older material was weaker and contained gypsum and calcite and a partially decomposed ettringite. The goal of the geotechnical characterization is to develop a mix design appropriate for mine emplacement. Evaluation of four different types of mixes are being evaluated: (1) FGD mixed with water and not subjected to prehydration, (2) FGD prehydrated for 24 hours and then mixed with water, (3) FGD mixed with bottom ash from the same location, and (4) FGD mixed with a typical Midwest fly ash. Based on the evaluation completed to date the prehydrated offers the most promise for providing a mix design that can permit relatively high strengths and low mixing and curing temperatures. The final survey of the field site was completed and coring and pressure testing of the strata in the immediate vicinity of the proposed adits was completed. A literature review of the factors which control spontaneous coal combustion was also completed. It was determined that the Princess No.3 Mine has a low to moderate potential for spontaneous combustion.

• Research Organization: Kentucky Univ., Lexington, KY (United States). Center for Applied Energy Research
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC21-93MC30251
• OSTI ID: 10105322
• Report Number(s): DOE/MC/30251-3938; ON: DE95000032; BR: AA0515000; TRN: AHC29503%%30
• Resource Relation: Other Information: PBD: Sep 1994
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FLY ASH
WASTE PRODUCT UTILIZATION
PHYSICAL PROPERTIES
CHEMICAL PROPERTIES
ASHES
UNDERGROUND MINING
BACKFILLING
SLUDGES
PROGRESS REPORT
FLUIDIZED BED BOILERS
WASTE PROCESSING PLANTS
COMPRESSION STRENGTH
SITE CHARACTERIZATION
CALCIUM COMPOUNDS
EXPERIMENTAL DATA
010800
010600
WASTE MANAGEMENT
PROPERTIES AND COMPOSITION