Characterization of coal surfaces. Technical progress report, 21 May-20 August 1986

Technical Report · Mon Sep 01 04:00:00 EDT 1986

OSTI ID:5378354

Fuerstenau, D W

The overall objective of this research work is directed towards delineating the fundamental aspects of the interfacial behavior of coal in relation to surface-based beneficiation processes for coal cleaning. Previous reports have presented the results of our film flotation technique to evaluate the wettability characteristics of coal. The efficacy of the film flotation technique to characterize the lyophobicity (hydrophobicity) of particles was confirmed by comparing the average critical wetting tension value obtained by this method with that obtained from contact angle measurements. By coating different mineral substrates with paraffin wax, the negligible effect of gravity on film flotation was demonstrated. Various flotation tests were performed to correlate flotation behavior with the critical surface tension results obtained from the film flotation experiments. Research during the last quarter was directed along two main lines: (1) repeat the earlier film flotation response of a series of coal samples to correlate wettability with their bulk properties; (2) conduct film flotation of chemically treated glass beads to delineate particle shape effects in this characterization process. 2 refs., 1 fig., 2 tabs.

• Research Organization: California Univ., Berkeley (USA). Coll. of Engineering
• DOE Contract Number: FG22-84PC70776
• OSTI ID: 5378354
• Report Number(s): DOE/PC/70776-T8; ON: DE86015795
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALCOHOLS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COAL FINES
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FLOTATION
FOSSIL FUELS
FUELS
GLASS
HYDROXY COMPOUNDS
INFORMATION
MATERIALS
METHANOL
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
QUARTZ
RESEARCH PROGRAMS
SEPARATION PROCESSES
SHAPE
SILICON COMPOUNDS
SILICON OXIDES
SURFACE PROPERTIES
SURFACE TENSION
WETTABILITY