The hydrophobic character of nonsulfide mineral surfaces as influenced by double-bond reactions of adsorbed unsaturated collector species. Progress report
The primary goal of this research is to improve the flotation efficiency of nonsulfide mineral systems by establishing the fundamental features of collector adsorption reactions and developing appropriate chemical control strategies. In situ real-time FR-IR/IRS measurements, nonequilibrium electrophoresis, vacuum flotation, contact-angle goniometry, and laser Raman spectroscopy have been used to accomplish this goal. These experimental techniques have led to the determination of important information concerning collector adsorption phenomena in each nonsulfide mineral system. For example, the demonstration of polymerization of adsorbed unsaturated surfactant species has added a new dimension to semi-soluble salt flotation chemistry and may have more general utility. Furthermore, refinement of the in situ FT-IR/IRS analysis has been accomplished particularly for the examination of surfactant aggregation phenomena at nonsulfide mineral surfaces. Finally, the significance of the lattice ion hydration theory has been demonstrated by nonequilibrium electrophoretic mobility measurements, and the new results will provide a better basis for the understanding of soluble-salt flotation phenomena.
- Research Organization:
- Utah Univ., Salt Lake City, UT (United States). Dept. of Mechanical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-84ER13181
- OSTI ID:
- 10167956
- Report Number(s):
- DOE/ER/13181--T3; ON: DE92019012
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
400105
APATITES
CHEMICAL AND SPECTRAL PROCEDURES
ELECTROPHORESIS
FLOTATION
FLUORITE
FOURIER TRANSFORM SPECTROMETERS
HALITE
HYDRATION
IONS
LASER SPECTROSCOPY
MINERALS
NEAR INFRARED RADIATION
ORE PROCESSING
POTASSIUM CHLORIDES
PROGRESS REPORT
QUARTZ
RAMAN SPECTRA
REFLECTION
RUTILE
SEPARATION PROCEDURES
SURFACE IONIZATION
400102
400105
APATITES
CHEMICAL AND SPECTRAL PROCEDURES
ELECTROPHORESIS
FLOTATION
FLUORITE
FOURIER TRANSFORM SPECTROMETERS
HALITE
HYDRATION
IONS
LASER SPECTROSCOPY
MINERALS
NEAR INFRARED RADIATION
ORE PROCESSING
POTASSIUM CHLORIDES
PROGRESS REPORT
QUARTZ
RAMAN SPECTRA
REFLECTION
RUTILE
SEPARATION PROCEDURES
SURFACE IONIZATION