Control of pyrite surface chemistry in physical coal cleaning
To better understand the surface chemical properties of coal and mineral pyrite, studies on the effect of flotation surfactants (frother and kerosene) on the degree of hydrophobicity have been conducted. The presence of either frother or kerosene enhanced the flotability of coal and mineral pyrite with a corresponding decrease in induction time over the pH range examined. Scanning electron microscopy (SEM) results indicate a correlation exists between the sample surface morphology and crystal structure and the observed hydrophobicity. As a result of the data obtained from the surface characterization studies, controlled surface oxidation was investigated as a possible pyrite rejection scheme in microbubble column flotation.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Mining and Minerals Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-89PC89789
- OSTI ID:
- 5196241
- Report Number(s):
- DOE/PC/89789-T6; ON: DE92015800
- Country of Publication:
- United States
- Language:
- English
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Control of pyrite surface chemistry in physical coal cleaning. Final report
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Related Subjects
COAL
DESULFURIZATION
FLOTATION
PYRITE
OXIDATION
SURFACE PROPERTIES
BITUMINOUS COAL
KEROSENE
PH VALUE
PROGRESS REPORT
SCANNING ELECTRON MICROSCOPY
SURFACTANTS
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DOCUMENT TYPES
ELECTRON MICROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GAS OILS
LIQUID FUELS
MATERIALS
MICROSCOPY
MINERALS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
SEPARATION PROCESSES
SULFIDE MINERALS
010300* - Coal
Lignite
& Peat- Preparation- (1987-)