Development of the chemical and electrochemical coal cleaning process
The work done during this quarter included the sample characterization (Task 3) of the Middle Wyodak and Upper Freeport coal and the continuation of the parametric testing (Subtask 4.1) of the Middle Wyodak coal samples. The proximate and ultimate analyses of the Upper Freeport coal sample were completed, as well as the FTIR spectroscopic and SEM characterization of the coal surface. Results of the parametric testing of the wet-screened Middle Wyodak coal were similar to those obtained for the dry-screened samples. The ash mineral rejection was found to be affected significantly by changes in the temperature and acid concentration, but not by the percent solids and ferric ion concentration. The FTIR spectra of the CECC-processed coal indicated oxidation of the coal surface. The signals attributed to clay minerals were found to be more significant in the spectra of the refuse than in that of the product. 5 figs., 5 tabs.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (USA). Dept. of Mining and Minerals Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC22-87PC79892
- OSTI ID:
- 5812852
- Report Number(s):
- DOE/PC/79892-T7; ON: DE91012265
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASHES
INFRARED SPECTRA
SCANNING ELECTRON MICROSCOPY
COAL
CHEMICAL ANALYSIS
SURFACE CLEANING
IRON SULFIDES
ASH CONTENT
PARTICLE SIZE
PROGRESS REPORT
PYRITE
SURFACES
TEMPERATURE EFFECTS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CLEANING
DOCUMENT TYPES
ELECTRON MICROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
MATERIALS
MICROSCOPY
MINERALS
RESIDUES
SIZE
SPECTRA
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SURFACE FINISHING
TRANSITION ELEMENT COMPOUNDS
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Lignite
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