Alpha Hemihydrate Gypsum Preparationed by Atmospheric Pressure Salt Solution Method Process Route

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Alpha Hemihydrate gypsum was prepared through atmospheric pressure salt solution method based on orthogonal experiments. The morphology and phase composition of the samples were observed and analyzed by microscope and X-ray diffractmeter. The major experimental parameters of atmospheric salt solution that prepared alpha half water gypsum were determined. The experiment result indicates that the best speed is 190 R/min, most appropriate water slurry ratio is 3.5:1 and the most suitable reaction time is 4h. In addition, grain was growing longer first in one direction, but when the length of the gains reaches at a certain extent, they will grow in two dimentions to become thick.

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23-27

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June 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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