The hydrophobic character of nonsulfide mineral surfaces as influenced by double-bond reactions of adsorbed unsaturated collector species
A unique in-situ sampling technique has been developed which allowed for real-time analysis of surfactant adsorption processes on mineral single crystals. This technique couples FT-IR spectroscopy and internal reflection spectroscopy (FT-IR/IRS) and the mineral single crystal is referred to as a reactive'' internal reflect element (IRE). The single crystal is reactive in the sense that the adsorption occurs directly upon the surface of the IRE, which also serves to transmit IR electromagnetic radiation. The in-situ FT-IR/IRS method was previously demonstrated for the fluorite (CaF{sub 2})/oleate flotation system. Information obtained from this system included adsorption density (from mid- and near-infrared spectra), adsorption state and reactivity of adsorbed collector, and alkyl chain conformational analysis. In the second budget period, similar analyses have been performed for three other mineral systems. These systems are as follows: Insoluble Oxides: sapphire ({alpha}-Al{sub 2}O{sub 3})/sodium dodecylsulfate; Soluble Salts: sylvite (KCl)/n-octylamine; and Semisoluble Salts: calcite (CaCO{sub 3})/sodium oleate and fluorite (CaF{sub 2})/sodium oleate.
- Research Organization:
- Utah Univ., Salt Lake City, UT (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-84ER13181
- OSTI ID:
- 5838906
- Report Number(s):
- DOE/ER/13181-7; ON: DE92008229
- Country of Publication:
- United States
- Language:
- English
Similar Records
The hydrophobic character of nonsulfide mineral surfaces as influenced by double-bond reaction of adsorbed unsaturated collector species: Progress report for 2nd year. [Oleate on fluorite; collophanite activation]
The hydrophobic character of nonsulfide mineral surfaces as influenced by double-bond reactions of adsorbed unsaturated collector species. Progress report, 15 December 1992--14 December 1993
Related Subjects
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
ALKALI METAL COMPOUNDS
AMINES
CALCITE
CARBONATE MINERALS
CARBOXYLIC ACID SALTS
CHLORIDES
CHLORINE COMPOUNDS
CORUNDUM
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
FLOTATION
FOURIER TRANSFORM SPECTROMETERS
HALIDES
HALOGEN COMPOUNDS
INFRARED RADIATION
MEASURING INSTRUMENTS
MINERALS
NEAR INFRARED RADIATION
ORGANIC COMPOUNDS
OXIDE MINERALS
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
PROGRESS REPORT
RADIATIONS
REFLECTION
SAPPHIRE
SEPARATION PROCESSES
SPECTROMETERS