日本京都大学金属学系西原,近藤及松村三人报导了用镁-钙混合物作还原剂制备少量金属铀的方法,其内容如下: 在约700℃预热炉中,可用镁大量地还原四氟化铀,一般认为,四氯化铀的性质对金属铀的产率有很大的影响。因此建议先作小量的还原试验,以估计由四氟化铀中所获得的铀产率。在约700℃下预热的小量还原试验中,在装料中不加KClO_3或I_2的情况下,所产生的热量不能维持铀和熔渣的熔融状态。在装料中用钙代替镁,是 Nihon Kanto and Matsumura, Department of Metallurgy, Kyoto University, Japan, reported the use of a magnesium-calcium mixture as a reducing agent for the preparation of a small amount of metallic uranium. The contents are as follows: In a preheating furnace at about 700 ° C, a large amount of magnesium Uranium, it is generally believed that the nature of uranium tetrachloride uranium metal yield has a great impact. It is therefore advisable to make a small initial reduction test to estimate the uranium yield obtained from uranium tetrafluoride. In a small amount of reduction test, preheated at about 700 ° C, the heat generated could not maintain the molten state of uranium and slag without charge of KClO_3 or I_2 in the charge. In the charge of calcium instead of magnesium, is