Apparatus for processing coal
Apparatus for processing coal to prevent the creation of extreme fines and to extract pyrites from the principal coal fractions in which there are two air circulating circuits having processing components which cooperate in their respective circuits to result initially in substantial extraction of fines in the first circuit while releasing principal granulated coal fractions and pyrites to the second circuit where specific gravity separation of the pyrites and principal coal fractions occur. The apparatus includes a source of drying heat added to the air moving in the circuits and delivered at the places where surface moisture drying is most effective. Furthermore, the apparatus is operated so as to reduce coal to a desired size without creating an excessive volume of extreme fines, to separate pyrites and hard to grind components by specific gravity in a region where fines are not present, and to use the extreme fines as a source of fuel to generate drying heat.
- Assignee:
- Williams Patent Crusher and Pulverizer Co.
- Patent Number(s):
- US 4498633
- OSTI ID:
- 5537133
- Resource Relation:
- Patent File Date: Filed date 4 Nov 1982; Other Information: PAT-APPL-439050
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL PREPARATION
DRYING
PARTICLE SIZE CLASSIFIERS
SEPARATION EQUIPMENT
COAL FINES
COMMINUTION
PYRITE
REMOVAL
CHALCOGENIDES
EQUIPMENT
IRON COMPOUNDS
IRON SULFIDES
MINERALS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage