Grinding mixture and process for preparing a slurry therefrom

Patent · Tue Oct 16 00:00:00 EDT 1984

OSTI ID:6146330

Funk, J E

A novel grinding mixture useful for preparing a solid-liquid slurry is disclosed. This grinding mixture contains from about 60 to about 82 volume percent of carbonaceous material (such as coal and/or coke), from about 18 to about 40 volume percent of carrier liquid (such as, e.g., water and/or oil), and from about 0.01 to about 4.0 weight percent of dispersing agent. The grinding mixture has a pH of from about 7 to about 12. There are at least two consists in the grinding mixture. From about 2 to about 50 weight percent of the particles in the grinding mixture have a median particle size of from about 0.5 to about 40 microns. From about 50 to about 98 weight percent of the particles in the grinding mixture have a median particle size in excess of 40 microns. There is also provided a process for preparing a liquid-solid slurry wherein the grinding mixture is ground until a slurry is produced whose particle size distribution is in accordance with a specified ''CPFT'' formula.

• Assignee: Alfred University Research Foundation Inc.
• Patent Number(s): US 4477259
• OSTI ID: 6146330
• Resource Relation: Patent File Date: Filed date 22 Feb 1983; Other Information: PAT-APPL-468459
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FUEL SLURRIES
CHEMICAL PREPARATION
CHEMICAL COMPOSITION
COAL
COAL PREPARATION
GRINDING
PARTICLE SIZE
PETROLEUM
WATER
CARBONACEOUS MATERIALS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
MACHINING
MATERIALS
MIXTURES
OXYGEN COMPOUNDS
SIZE
SLURRIES
SUSPENSIONS
SYNTHESIS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage