Process for preparing a clean coal-water slurry

Details Process for preparing a clean coal-water slurry Process for preparing a clean coal-water slurry

1983-07-27

1984-08-28

Warren, Charles F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

406197, C10L 132

Patent

active

044682328

ABSTRACT:
A process for providing a clean coal-water slurry, which contains from 60-80 volume percent of coal and has a relatively low viscosity, is provided. In one embodiment of this process, a coal-water mixture which contains 60-80 volume percent of solid material is ground until a slurry whose particle size distribution is in accordance with a specified CPFT formula is produced, and the coal is cleaned; in this embodiment, the coal is cleaned either by cleaning the coal-water mixture before grinding it, or by cleaning the coal-water slurry. In another embodiment of this process, a coal-water mixture is blended with at least one additional coal fraction(such as coal, coal-water mixture, or mixtures thereof) until a slurry is produced which contains 60-80 percent of solids and which has the aforementioned particle size distribution; and the coal is cleaned; in this embodiment, it is preferred to clean the coal by cleaning the coal-water slurry.

REFERENCES:
patent: 4104035 (1978-08-01), Cole et al.
patent: 4282006 (1981-04-01), Funk

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