The production of strontium (Sr) metal from its oxide via an aluminothermic process under 1–5 mbar pressure was examined in this study. SrO of 99% purity by weight was used in the experiments. The effects of stoichiometry and the duration of the process on the efficiency ratio of the metallic strontium were examined. The effects of functional additives (BaO, CaO, CaC2) were also examined. Characterization was carried out using X-ray diffraction spectrometry (XRD), atomic absorption spectrometry (AAS) and flame photometry techniques. The highest Sr efficiency ratio obtained was 96.89% in the experiment conducted at 1250 °C with 300% Al stoichiometry and 300% BaO stoichiometry.

中文翻译：

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通过真空铝热工艺生产锶

本研究研究了在 1-5 毫巴压力下通过铝热工艺从其氧化物生产锶 (Sr) 金属。实验中使用了 99% 重量纯度的 SrO。检查了化学计量和过程持续时间对金属锶的效率比的影响。还检查了功能性添加剂（BaO、CaO、CaC2）的影响。使用 X 射线衍射光谱法 (XRD)、原子吸收光谱法 (AAS) 和火焰光度法技术进行表征。在 1250 °C 和 300% Al 化学计量和 300% BaO 化学计量下进行的实验中，获得的最高 Sr 效率比为 96.89%。