Hydration of anhydrite of gypsum (CaSO<sub>4</sub>.II) in a ball mill: Fid-Bau Portal

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Hydration of anhydrite of gypsum (CaSO₄.II) in a ball mill

Sievert, T. / Wolter, A. / Singh, N.B.

The hydration of an anhydrite of gypsum (CaSO₄.II) in a ball mill was studied as a function of time and temperature. The amount of gypsum formed at different intervals of time was determined by weight loss method and powder X-ray diffraction technique. Specific surface area at different time intervals was determined by LASER granulometric method. The results showed that the maximum rate of formation of gypsum was at a longer time than the time for the development of maximum specific surface area. In the presence of activators, the time for maximum rate of gypsum formation and maximum specific surface area shifted towards lower hydration time. Morphological changes during the course of hydration have been studied by the scanning electron microscopic (SEM) technique. A mechanism of hydration has been proposed.

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Hydration of anhydrite of gypsum (CaSO₄.II) in a ball mill

Sievert, T. / Wolter, A. / Singh, N.B.

The hydration of an anhydrite of gypsum (CaSO₄.II) in a ball mill was studied as a function of time and temperature. The amount of gypsum formed at different intervals of time was determined by weight loss method and powder X-ray diffraction technique. Specific surface area at different time intervals was determined by LASER granulometric method. The results showed that the maximum rate of formation of gypsum was at a longer time than the time for the development of maximum specific surface area. In the presence of activators, the time for maximum rate of gypsum formation and maximum specific surface area shifted towards lower hydration time. Morphological changes during the course of hydration have been studied by the scanning electron microscopic (SEM) technique. A mechanism of hydration has been proposed.

Hydration of anhydrite of gypsum (CaSO₄.II) in a ball mill

Sievert, T. / Wolter, A. / Singh, N.B.

The hydration of an anhydrite of gypsum (CaSO₄.II) in a ball mill was studied as a function of time and temperature. The amount of gypsum formed at different intervals of time was determined by weight loss method and powder X-ray diffraction technique. Specific surface area at different time intervals was determined by LASER granulometric method. The results showed that the maximum rate of formation of gypsum was at a longer time than the time for the development of maximum specific surface area. In the presence of activators, the time for maximum rate of gypsum formation and maximum specific surface area shifted towards lower hydration time. Morphological changes during the course of hydration have been studied by the scanning electron microscopic (SEM) technique. A mechanism of hydration has been proposed.

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Title:

Hydration of anhydrite of gypsum (CaSO₄.II) in a ball mill

Contributors:

Sievert, T. (author) / Wolter, A. (author) / Singh, N.B. (author)

Published in:

Cement and Concrete Research ; 35 ; 623-630

Publication date:

2005

Size:

8 Seiten, 10 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2004.02.010

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Hydratisieren , Kugelmühle , Röntgenbeugung , Röntgenanalyse , Rasterelektronenmikroskopie , Morphologie , Reaktionskinetik , Teilchengrößenbestimmung , Calciumhydroxid , Adsorption , Auflösung , Isopropanol , Anhydrit-Gips

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