Reduction of sulfur in Indiana coal by washability techniques. Environmental study II

Book · Sat Jan 01 04:00:00 EST 1977

OSTI ID:6312189

Wier, C E; Hutchison, H C

Fifteen 1-ton bulk samples of Indiana coal were studied in detail by the Indiana Geological Survey in an attempt to reduce the sulfur content. Laboratory techniques of crushing, screening, and making separations based on specific gravity simulated the cleaning processes used in modern industry-operated coal preparation plants. Sulfide, sulfate, organic sulfur, and total sulfur were determined for each fractional sample of coal obtained by screening and float-sink methods. Only the sulfate (about 0.1% of coal) and the sulfide or pyritic sulfur (0.7 to 5.4% of coal) can be reduced by this mechanical cleaning technique. Organic sulfur (0.2 to 2.8 % of coal) cannot be reduced by this method. Although about half of the pyritic sulfur can be removed at the 80% recovery level, Seelyville coal (III) and Springfield coal (V) still contain, in most places, more than 3% sulfur; Buffaloville coal, Hymera coal (VI), and Danville coal (VII), 2 to 3%; and Survant coal (IV) and Upper Block coal, 2% or less.

• OSTI ID: 6312189
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
AIR POLLUTION CONTROL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CLEANING
COAL
COAL PREPARATION
COMMINUTION
DATA
DATA FORMS
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GREAT LAKES REGION
INDIANA
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MINERALS
NONMETALS
NORTH AMERICA
NUMERICAL DATA
ORES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
PYRITE
PYRITES
REMOVAL
SAMPLING
SIMULATION
SULFATES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR ORES
TABLES
THERMAL POWER PLANTS
TRANSITION ELEMENT COMPOUNDS
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WASHING