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bentonite

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bentonite

Soft porous rock consisting mainly of clay minerals, such as montmorillonite, and resembling fuller's earth, which swells when wet. It is formed by the chemical alteration of glassy volcanic material, such as tuff. Bentonite is used in papermaking, moulding sands, drilling muds for oil wells, and as a decolorant in food processing.
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Bentonite clay is much-used in the metalcasting industry as a bonding agent in green sand molds.
Bentonite's Kaleidoscope of Applications by Modern Casting
The mill's previous program used cationic polyacrylamide (CPAM) and bentonite and was meeting performance needs, but the need to reduce costs led the mill to investigate alternatives.
Retention/drainage technology reduces chemical cost by Woodward, James H. / Solutions - for People, Processes and Paper
If molds or mycotoxins are present, try a binding compound such as MTB100 or sodium bentonite, Van Saun suggests.
Sickening silage? by Bower Spence, Kim / Dairy Today
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