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A granulation/sintering method for the codisposal of solid residues from coal conversion processes

Conference · · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)
OSTI ID:5431961
A stabilization process for coal cleaning and coal combustion-related wastes has been developed that uses the energy derived from the fuel contained in the coal cleaning waste. The wastes are pulverized, when necessary, formed into granules in a rotary pan agglomerator, and then fired to a sintering temperature. The resulting readily disposable product consists of rock-hard granules that are highly resistant to environmental degradation. The green (nondried and nonfired) granules satisfy durability tests that measure the capability to be handled and stored. The sintered granules meet requirements of the standard ASTM and EP leaching tests and a freeze-thaw cycle test. The strength of the sintered granules compares favorably with the strength of natural aggregates. The process has been applied to coal cleaning refuse alone and to refuse/fly ash and refuse/FGD sludge mixtures.
DOE Contract Number:
W-7405-ENG-82
OSTI ID:
5431961
Report Number(s):
CONF-8806316--
Conference Information:
Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 33:2
Country of Publication:
United States
Language:
English