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1·Method X-ray diffraction method was used in the analysis to distinguish crude and calcined gypsum from medicinal minerals containing calcium.

方法应用X射线衍射法对石膏分析研究，并以X射线衍射法对中药石膏生、煅品与类似含钙矿物药的生、煅品加以区别。

2·The calcined gypsum powder stays in the aging silo for about 2 days to make it mixed intensively and with better property, convenient for future use.

煅烧好后的石膏粉在陈化仓中停留2天左右，使其充分混合，性能变好，便于以后的使用。

3·The influences of adding calcined gypsum instead of dihydrate gypsum and adding a little limestone on the physical properties of cement were investigated.

研究了用烧石膏代替二水石膏并掺入少量石灰石对水泥物理性能的影响。

4·The XRD characterization and chemical analysis of boron concentrates and tailings showed that pinnoite and calcined gypsum has been basically separated through reverse flotation.

此外，还考察了擦洗对硼矿富集的影响，结果表明擦洗可以有效去除柱硼镁石矿中的可溶性盐，改善了浮选效果。

5·If industry wastes lime, calcined gypsum and sulfate are grinded with the high-calcium fly ash, activity increases, soundness improves, and activity index can meets the demand for S95slag.

采用工业废石灰、煅烧磷及无机盐激发剂，加上短时粉磨处理以激发高钙灰，可显著改善其安定性，活性指标可达到S95矿渣粉水平。

6·The strength for hardening calcined kaolinite-Portlandite-gypsum system is derived from the quantity of forming ettringite.

煅烧高岭石-石灰-石膏硬化体的强度与钙矾石生成量的多少相关。