Method of upgrading crude sodium bentonite

Details Method of upgrading crude sodium bentonite Method of upgrading crude sodium bentonite

1981-04-13

1983-02-01

Bell, Mark

Compositions: ceramic

Ceramic compositions

Clay containing

252449, 241 4, 106291, C09C 128, C09C 142

Patent

active

043716261

ABSTRACT:
A method of upgrading crude sodium bentonite to improve its fluid loss properties, comprises subjecting the bentonite to shearing forces that are sufficient to increase the methylene blue uptake by the bentonite, and then drying and pulverizing the bentonite. The shearing forces are applied to the bentonite by extruding the bentonite while it has a moisture content between about 20 and 40 wt. %.

REFERENCES:
patent: 2231328 (1941-02-01), Simmons
patent: 3700474 (1972-10-01), Lang
patent: 4125411 (1978-11-01), Lyons
patent: 4254565 (1981-03-01), Jenkins et al.
The Condensed Chemical Dictionary, p. 503, (Reinhold Publishing Corp., New York, 5th ed., 1956).
"Clays (Uses)", Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 5, p. 577 (John Wiley & Sons, Inc., 2nd ed. 1964).

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