Effects of chemical composition on surface resistivity of fly ash
Book
·
OSTI ID:6515014
The electrical resistivity of 17 commercially produced fly ashes from both eastern and western coals were studied to determine the effects of chemical composition on surface resistivity. Elemental composition of a flyash influences its electrical resistivity and thus considerably effects its collectability by electrostatic precipitation. Standard chemical analyses, absorption spectroscopy, and colorimetric tests were performed. An air pycnometer and micro-particle classifier (for detection of particle size distribution) were used, and a laboratory device was constructed for the measurement of fly ash resistivity under different conditions. A correlation was established between certain elemental constituents of fly ash, especially Li, Na, K, and Fe, and resistivity. A procedure was proposed whereby the resistivity of a particular fly ash might be predicted from measurable chemical constituents, thus allowing for the objective selection of conditioning agents and the anticipation of problems resulting from a particular configuration of plant operating conditions.
- OSTI ID:
- 6515014
- Report Number(s):
- PB-244885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ABSORPTION SPECTROSCOPY
AEROSOL WASTES
AIR POLLUTION CONTROL
ASHES
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
DENSIMETERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY SOURCES
EQUIPMENT
FLY ASH
FORECASTING
FOSSIL FUELS
FUELS
MATERIALS
MEASURING INSTRUMENTS
PARTICLE SIZE CLASSIFIERS
PHYSICAL PROPERTIES
POLLUTION CONTROL
PYCNOMETERS
RESIDUES
SPECTROSCOPY
WASTES
010800* -- Coal
Lignite
& Peat-- Waste Management
ABSORPTION SPECTROSCOPY
AEROSOL WASTES
AIR POLLUTION CONTROL
ASHES
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
DENSIMETERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY SOURCES
EQUIPMENT
FLY ASH
FORECASTING
FOSSIL FUELS
FUELS
MATERIALS
MEASURING INSTRUMENTS
PARTICLE SIZE CLASSIFIERS
PHYSICAL PROPERTIES
POLLUTION CONTROL
PYCNOMETERS
RESIDUES
SPECTROSCOPY
WASTES