钙还原是提取稀有元素的常用方法之一。一般反应都是钙与目标元素的氧化物发生置换反应，生成氧化钙和单质目标元素物质，钙在整个反应中起到还原剂的作用。钙还原过程会放出大量的热，这些能量可以推进反应的进程。
从热力学分析了用铝、钙、硅、钛及铁铬铝中的铝还原稀土氧化物成稀土金属进入合金的可能性。
The possibility of reduction of rare-earth oxides to metals by aluminum in Fe-Cr-Al alloys as well as by aluminum, calcium, silicon and titanium has been studied from the view point of thermodynamics.
探讨了氧化还原条件对钼在钠钙玻璃中着色的影响。
Effect of REDOX condition on the coloring of soda-lime glass by Mo-electrodes has been studied.
研究了采用可溶性钙盐对以乳酸为络合剂，次磷酸盐为还原剂的失效化学镀镍溶液的再生。
The method using soluble calcium salt for regeneration of waste electroless nickel plating liquor, in which the lactic acid used as complexing agent and hypophosphite used as redcing agent is studied.
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