Abstract
The components of concha arcae and calcined concha arcae were analyzed by X-ray powder diffraction and calculated their contents, and their surface morphology was observed by scanning electron microscope. The experimental results showed that the concha arcae was composed of aragonite type and calcite type calcium carbonate, and calcined concha arcae was composed of calcium oxide, calcium hydroxide and calcium carbonate. The surface micromorphology of them were significantly different. Rietveld refinement can accurately and quickly complete the phase identification and quantitative analysis of raw and calcined products of concha arcae by Powder X-ray diffraction, it is more convenient and fast compared with chemical titration method.
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