Method of making pellets usable as aggregate or filler

Details Method of making pellets usable as aggregate or filler Method of making pellets usable as aggregate or filler

1975-07-07

1977-12-20

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Agitating to form larger particles

B01J 212

Patent

active

040642127

ABSTRACT:
Waste gas from a coal-fired power plant is scrubbed with a lime-water mixture to form a sludge whose water content is reduced and which is mixed with a binder such as water glass. This mixture is then pelletized to produce hard water-stable material suitable for use as an aggregate or filler. The waste gas may be stripped of its fly ash and this ash added to the sludge to thicken it.

REFERENCES:
patent: 2946112 (1960-07-01), Tucker, Jr. et al.
patent: 3598754 (1971-08-01), Thummler et al.
Perry's Chem. Engrs. Handbook, Perry et al., McGraw-Hill Book Co., N.Y., 1963; pp. 14-37; 20-17; 21-18; 21-21; 20-10; 8-61.

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