Microwave preparation method of alpha-calcium sulfate hemihydrate
A technology of calcium sulfate hemihydrate and calcium sulfate dihydrate, which is applied in the field of preparation of α-calcium sulfate hemihydrate, can solve the problems of multiple impurities, low added value, high free water, etc., and achieve the effect of shortening the reaction time
Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH +1
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Abstract
The invention discloses a microwave preparation method of alpha-calcium sulfate hemihydrate. The method includes the steps of: adding calcium sulphate dehydrate into an aqueous solution containing calcium chloride and sodium chloride, carrying out microwave heating reaction under the action of ultrasound, and conducting filtering, washing and drying to obtain alpha-calcium sulfate hemihydrates. The method provided by the invention is characterized in that it utilizes the synergistic effect of microwave and ultrasonic wave to accelerate the reaction rate and reduce the reaction time, and the prepared alpha-calcium sulfate hemihydrates crystal is a fibrous structure, and has uniform shape and size and high crystallinity.
Technology Topic
Aqueous solutionCalcium Sulfate Hemihydrate +8
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PUM
Property | Measurement | Unit |
Average length | 113.0 | µm |
The average diameter | 7.37 | µm |
Average length | 114.0 | µm |
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