Physical desulfurization of Iowa coal by flotation

Technical Report · Wed Jun 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5364120· OSTI ID:5364120

Laros, T J

An experimental investigation was carried out to develop a flotation technique for the efficient beneficiation of Iowa coal fines that could be applied on a pilot plant scale at the Iowa State University coal preparation plant. Flotation techniques found to be effective on Appalachian coals were studied to determine their effectiveness on Iowa coals. A single-stage flotation technique using metal salts was studied at different pH values. The effects of metal salt concentrations and different frother agents were also examined. Flotation techniques that performed well on Appalachian coals were found to be less effective on Iowa coals. The metal salts tested behaved more as coal activators than as pyrite depressants. The frothers examined exhibited collector-like properties. A single-stage flotation technique using 10/sup -4/ M concentration of metal salts and MIBC as the frother was found to effectively beneficiate Iowa coal fines.

• Research Organization: Iowa State Univ. of Science and Technology, Ames (USA). Energy and Mineral Resources Research Inst.
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5364120
• Report Number(s): IS-ICP-47
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL FINES
COAL PREPARATION PLANTS
DESULFURIZATION
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
IOWA
IRON COMPOUNDS
IRON SULFIDES
MINERALS
NORTH AMERICA
PH VALUE
PYRITE
PYRITES
REMOVAL
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
USA