Control of pyrite surface chemistry in physical coal cleaning

Technical Report · Wed Jun 24 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/5196241· OSTI ID:5196241

Luttrell, G H; Yoon, R H; Zachwieja, J; Lagno, M

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: DOE; 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

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DESULFURIZATION
DOCUMENT TYPES
ELECTRON MICROSCOPY
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
GAS OILS
KEROSENE
LIQUID FUELS
MATERIALS
MICROSCOPY
MINERALS
OXIDATION
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PH VALUE
PROGRESS REPORT
PYRITE
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SULFIDE MINERALS
SURFACE PROPERTIES
SURFACTANTS