Method of simultaneously grinding coal and dolomite
A method is described of reducing coal and dolomite, each having its own hardness characteristic, the coal and dolomite being simultaneously reduced in a common impact mill to prepare a common charge of a mix thereof having a particle size as a fuel for combustion. The method comprises: (a) mixing the coal and dolomite initially in a predetermined volumetric ratio in the impact mill, thereby forming a common charge of coal and dolomite; (b) impacting the common charge of coal and dolomite, thereby reducing the size of the coal and dolomite; (c) retaining a portion of the common charge of coal and dolomite during the impacting step in the mill to absorb a portion of the impact energy applied to the coal and dolomite, thereby minimizing the formation of extreme fines; and (d) collecting the common charge of coal and dolomite after the impacting step.
- Assignee:
- Williams Patent Crusher and Pulverizer Co., St. Louis, MO
- Patent Number(s):
- US 4641788
- OSTI ID:
- 7053695
- Resource Relation:
- Patent File Date: Filed date 16 Nov 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
GRINDING
DOLOMITE
COAL FINES
COMBUSTION
HARDNESS
MIXING
MIXTURES
PARTICLE SIZE
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE MINERALS
CARBONATES
CHEMICAL REACTIONS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MACHINING
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
MINERALS
OXIDATION
OXYGEN COMPOUNDS
SIZE
THERMOCHEMICAL PROCESSES
010300* - Coal
Lignite
& Peat- Preparation- (1987-)