Process for preparing a stabilized coal-water slurry
A process is described for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases. 2 figs.
- Research Organization:
- International Coal Refining Co
- DOE Contract Number:
- AC05-78OR03054
- Assignee:
- International Coal Refining Co., Allentown, PA (United States)
- Patent Number(s):
- US 4675024; A
- Application Number:
- PPN: US 6-597794
- OSTI ID:
- 7262867
- Resource Relation:
- Patent File Date: 6 Apr 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FUEL SLURRIES
PRODUCTION
STABILIZATION
COAL
COAL PREPARATION
COMMINUTION
WATER
CARBONACEOUS MATERIALS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
MATERIALS
MIXTURES
OXYGEN COMPOUNDS
SLURRIES
SUSPENSIONS
010300* - Coal
Lignite
& Peat- Preparation- (1987-)