Ash fusion temperatures and the transformations of coal ash particles to slag

Journal Article · Tue Dec 31 00:00:00 EST 1996 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry

OSTI ID:430299

Gupta, S; Wall, T F; Creelman, R A; Gupta, R ^[1]

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1. Univ. of Newcastle, Callaghan (Australia)

A mechanistic study is detailed in which coal ash is heated with its shrinkage measured continuously up to a temperature of 1600{degrees}C. The temperatures corresponding to the rapid rate of shrinkage are shown to correspond to the formation of eutectics identified on phase diagrams. Samples were therefore heated to these temperatures, cooled rapidly and examined with an SEM to identify the associated chemical and physical changes. The progressive changes in the range of chemical analysis (from SEM), the extent of undissolved ash particles and porosity were then quantified and related to homogenization, viscosity and ash fusion mechanisms.

• OSTI ID: 430299
• Report Number(s): CONF-960376-; ISSN 0569-3772; TRN: 97:000004-0027
• Journal Information: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Vol. 41, Issue 2; Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ASHES
PHASE TRANSFORMATIONS
COAL
COMBUSTION
DEPOSITS
FOULING
SULFATES
CHEMICAL ANALYSIS
EUTECTICS
PHASE DIAGRAMS
POROSITY
SHRINKAGE
VISCOSITY
MELTING
SLAGS