Process for making a carbonaceous slurry

Details Process for making a carbonaceous slurry Process for making a carbonaceous slurry

1985-05-10

1987-03-17

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

C10L 132

Patent

active

046504966

ABSTRACT:
A process for preparing a carbonaceous slurry is provided. The process involves the steps of (1) providing a slurry with specified properties, and (2) thereafter mixing said slurry. The slurry provided in the first step of this process contains from at least about 60 weight percent of sold carbonaceous material (such as coal), no more than about 40 weight percent of carrier liquid, and from about 0.1 to about 4.0 weight percent (by weight of dry carbonaceous material in the slurry) of dispersing agent. At least about 5 weight percent of the carbonaceous particles in the slurry provided in the first step are of colloidal size, being smaller than about 3.0 microns. The Brookfield viscosity of the slurry provided in the first step is less than 4,000 centipoise.
The mixing step of the process of this invention improves the properties of the slurry provided, decreasing its viscosity.

REFERENCES:
patent: 4217109 (1980-08-01), Siwersson et al.
patent: 4441888 (1984-04-01), Matt et al.
patent: 4494959 (1985-01-01), Funk
patent: 4504277 (1985-03-01), Scheffee

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