Coal-water fuel production

Details Coal-water fuel production Coal-water fuel production

1987-03-03

1990-04-10

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44622, 44627, C10L 132

Patent

active

049157060

ABSTRACT:
A process and apparatus for producing coal-water fuel comprises crushing and primary grinding of the coal to form a liberated granular material, multiple stage froth flotation of the granulated coal to reduce its ash content and pyritic sulfur content. The resulting product from the froth flotation operations is dewatered to yield a product having a selected solids content. A stable slurry is then produced from the product by establishing a selected particle size distribution. Refuse accumulated from the various previous steps is collected, dewatered and the water is clarified for use in the process steps.

REFERENCES:
patent: 4403997 (1983-09-01), Poetschke
patent: 4412843 (1983-11-01), Burgess et al.
patent: 4479806 (1984-10-01), Funk
patent: 4484928 (1984-11-01), Keller, Jr.
patent: 4515602 (1985-05-01), Keller, Jr. et al.
patent: 4543104 (1985-09-01), Brown, Jr. et al.

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