Method of producing Keramzit

Details Method of producing Keramzit Method of producing Keramzit

1978-04-03

1980-10-07

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

106 40R, 264 66, C04B 3304

Patent

active

042268192

ABSTRACT:
A method of producing Keramzit by means of treating clay to form a clayey mass, subsequently granulating it, drying the granules at a temperature of 100.degree. to 150.degree. C., heat-treating the dried granules at a temperature of 200.degree. to 500.degree. C., calcining them in two stages-at a temperature at the first stage of 800.degree. to 1,150.degree. C. for 0.5 to 10 minutes and at a temperature at the second stage of 1,150.degree. to 1,250.degree. C. for 1 to 5 minutes, and cooling the Keramzit produced.
The Keramzit produced according to the proposed method finds application in manufacturing all types of light-weight concretes.
The method makes it possible to produce a light-weight Keramzit having a low bulk density from 100 to 400 kg/m.sup.3 and a strength on compression in a cylinder of from 3 to 22 kgf/cm.sup.2, and a high-strength Keramzit having a bulk density of from 550 to 1,100 kg/m.sup.3 and a strength on compression in a cylinder of from 37 to 200 kgf/cm.sup.2.

REFERENCES:
patent: 2693017 (1954-11-01), Czarnecki
patent: 2706844 (1955-04-01), Nicholson
patent: 3118658 (1964-01-01), Dennert
patent: 3634250 (1972-01-01), Commons
patent: 3702257 (1972-05-01), Koning

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