Process for preparing a carbonaceous slurry

Details Process for preparing a carbonaceous slurry Process for preparing a carbonaceous slurry

1983-08-29

1984-10-16

Harris-Smith, Mrs. Y.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

C10L 132

Patent

active

044772602

ABSTRACT:
A process for preparing a carbonaceous slurry which utilizes a reduced amount of dispersing agent is provided. In this process, a grinding mixture which is comprised of from about 60 to about 82 volume percent of carbonaceous solid material and from about 18 to about 40 volume percent of carrier liquid is provided. The optimum concentration of dispersing agent for this grinding mixture is then determined by a specified method. Thereafter, the grinding mixture is ground until a slurry with specified properties and a specified particle size distribution is obtained; during the grinding, a total of from about 10 to about 90 weight percent of the optimum concentration of dispersing agent is added to the grinding mixture by adding at least two separate portions of dispersant at at least two separate times.

REFERENCES:
patent: 4104358 (1978-08-01), Cole et al.
patent: 4282006 (1981-04-01), Funk

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