Behavior of Calcium Sulfate at High Temperatures
نویسنده
چکیده
Differential heating curves were used to study the behavior of calcium sulfate at high temperatures. After cooling, the material was examined by means of the petrographic microscope and by study of its X-ray pattern. It was found that the beta-to-alpha transition of calcium sulfate occurs at approximately 1,214° C, and the conclusion of i ts discoverer that the high temperature form is unstable was confirmed. There appears to exist a eutectic mixture of alpha CaSO, and CaO which melts at approximately 1,365° C. The reported existence of basic sulfates of calcium was not confirmed. CONTENTS Page
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