Desulfurization of coal by flotation of coal in a single-stage process. [Kerosene as collector, pine oil as frother, and lime as depressant for pyrite]

Journal Article · Mon Jan 31 23:00:00 EST 1977 · Sep. Sci.; (United States)

OSTI ID:7308289

Boateng, D A.D.; Phillips, C R

A single-stage flotation process was developed in which coal was floated out and pyrite was depressed. Up to 90% of the pyritic sulfur content of bituminous coal could be removed at 75% coal recovery. The process was applied to three Canadian and two United States coals. Higher coal recoveries were obtained for low sulfur coals; up to 94.4% coal recovery was possible with 18.2% pyritic sulfur removal. Sulfate sulfur, trace elements, and ash were also removed. The effects of particle size, temperature, slurry density, and flotation time were studied. From a simplified rate equation a nonintegral order was obtained for the flotation process.

• Research Organization: Univ. of Toronto
• OSTI ID: 7308289
• Journal Information: Sep. Sci.; (United States), Journal Name: Sep. Sci.; (United States) Vol. 12:1; ISSN SESCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
DESULFURIZATION
DISPERSIONS
EFFICIENCY
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
KEROSENE
MINERALS
MIXTURES
ORES
PARTICLE SIZE
PETROLEUM PRODUCTS
PYRITE
PYRITES
REMOVAL
SEPARATION PROCESSES
SIZE
SLURRIES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
SUSPENSIONS
TEMPERATURE EFFECTS
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS