Process for preparing a stabilized coal-water slurry

Patent · Thu Jan 01 00:00:00 EST 1987

OSTI ID:866288

Givens, Edwin N ^[1]; Kang, Doohee ^[2]

---

1. Bethlehem, PA
2. Macungie, PA

A process 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.

• Research Organization: International Coal Refining Co
• DOE Contract Number: AC05-78OR03054
• Assignee: International Coal Refining Company (Allentown, PA)
• Patent Number(s): US 4675024
• OSTI ID: 866288
• Country of Publication: United States
• Language: English

Related Subjects

process
preparing
stabilized
coal-water
slurry
coal
particle
suspension
steps
providing
aqueous
media
substantially
free
oxidizing
constituents
reducing
nonoxidizing
atmosphere
size
suspended
sufficiently
permit
admixing
reduced
release
stabilizing
indigenous
carried
particles
form
effective
maintain
essentially
neutral
alkaline
ph
ground
inert
gaseous
reduce
sufficient
admixed
purged
oxygen
acid-forming
gases
coal particle
forming gas
water slurry
coal-water slurry
substantially free
particle size
inert gas
coal particles
aqueous media
oxidizing atmosphere
particle suspension
gaseous atmosphere
size sufficient
stabilized coal
forming gases
inert gaseous
alkaline ph
/44/241/