Thermal transfer layer
    1.
    发明授权
    Thermal transfer layer 失效
    热转印层

    公开(公告)号:US4852645A

    公开(公告)日:1989-08-01

    申请号:US163115

    申请日:1988-02-12

    摘要: The invention concerns a thermal transfer layer with high transfer coefficient between two materials which can have different expansion coefficients. The thermal transfer layer comprises expanded graphite inserted between the materials which are selected from among carbonaceous materials, ceramics and metals or metal alloys. The expanded graphite is either inserted in the form of a rolled or compressed sheet, or is compressed in situ. The invention also concerns a device for the cooling of a structure subjected to intense, continuous, intermittent or pulsating heat flux, by means of fluid circulation tubes placed in the passages in the structure. A flexible material which is a good heat conductor in a compressed state, such as expanded graphite, is placed between the structure to be cooled and each tube.

    摘要翻译: PCT No.PCT / FR87 / 00220 Sec。 371日期1988年2月12日 102(e)日期1988年2月12日PCT Filted 1987年6月15日PCT公布。 出版物WO87 / 07695 日期为1987年12月17日。本发明涉及一种在两种材料之间具有高传递系数的热转印层,其可具有不同的膨胀系数。 热转印层包括插入在碳质材料,陶瓷和金属或金属合金中的材料之间的膨胀石墨。 膨胀石墨或者以轧制或压缩的片材的形式插入,或者原位压缩。 本发明还涉及通过放置在结构中的通道中的流体循环管来冷却受到强烈,连续,间歇或脉动的热通量的结构的装置。 在被冷却的结构和每个管之间放置作为处于压缩状态的良好导热体的柔性材料,例如膨胀石墨。

    Electrolyte and process for electrolytic production of fluorine
    3.
    发明授权
    Electrolyte and process for electrolytic production of fluorine 失效
    电解液和氟电解生产工艺

    公开(公告)号:US4176018A

    公开(公告)日:1979-11-27

    申请号:US957447

    申请日:1978-11-03

    CPC分类号: C25B1/245 C25B9/066 C25B9/206

    摘要: An electrolyte and process for the low temperature industrial electrolytic production of fluorine gas utilizing a ternary electrolyte having a composition of:NH.sub.4 F=5 to 20 mol % of NH.sub.4 +KFHF=40 to 45%, by weight, of NH.sub.4 F+KF+HFwherein the working temperature of the electrolyte is maintained between about 50.degree. C. and about 75.degree. C.

    摘要翻译: 使用具有以下组成的三元电解质的低温工业电解生产氟化物的电解质和方法:NH4F = 5〜20摩尔%的NH4 + KF HF = 40〜45重量%的NH4F + KF + HF 其中电解液的工作温度保持在约50℃至约75℃之间。

    Process for obtaining uranium trioxide by direct thermal denitration of
uranyl nitrate
    4.
    发明授权
    Process for obtaining uranium trioxide by direct thermal denitration of uranyl nitrate 失效
    通过硝酸铀酰直接热脱硝获得三氧化铀的方法

    公开(公告)号:US5628048A

    公开(公告)日:1997-05-06

    申请号:US586879

    申请日:1996-02-28

    IPC分类号: C01B13/34 C01G43/01

    CPC分类号: C01G43/01 C01P2006/12

    摘要: Process for obtaining uranium trioxide from a uranyl nitrate solution, the trioxide obtained having to have a specific surface between 12 and 15 m.sup.2 /g, consisting of producing in a zone of the reaction chamber called the contact zone, a thermomechanical contact between the uranyl nitrate solution, atomized into fine droplets according to a given axis in the contact zone, and a gaseous fluid introduced into the contact zone, the gaseous fluid being at a sufficiently high temperature and having a sufficiently high mechanical energy to carry out, within the contact zone, the dehydration and calcination of the uranyl nitrate.

    摘要翻译: PCT No.PCT / FR95 / 00765 Sec。 371日期1996年2月28日 102(e)日期1996年2月28日PCT提交1995年6月12日PCT公布。 WO95 / 34508 PCT出版物 日期1995年12月21日从硝酸铀酰溶液中获得三氧化铀的方法,获得的三氧化二氮必须具有12至15m2 / g之间的比表面积,包括在称为接触区的反应室的区域中产生热机械 硝酸铀酰溶液之间的接触,根据接触区域中的给定轴线雾化成细微液滴,以及引入接触区域的气态流体,气态流体处于足够高的温度并具有足够高的机械能来进行 在接触区内,硝酸铀酰的脱水和煅烧。

    Method for preparing a mixture of powdered metal oxides from nitrates
thereof in the nuclear industry
    5.
    发明授权
    Method for preparing a mixture of powdered metal oxides from nitrates thereof in the nuclear industry 有权
    在核工业中制备其硝酸盐的粉末金属氧化物的混合物的方法

    公开(公告)号:US06110437A

    公开(公告)日:2000-08-29

    申请号:US91243

    申请日:1999-03-02

    摘要: A thermal decomposition method useful in the nuclear industry for preparing a powdered mixture of metal oxides having suitable reactivity from nitrates thereof in the form of an aqueous solution or a mixture of solids. According to the method, the solution or the mixture of solids is thermomechanically contacted with a gaseous fluid in the contact area of a reaction chamber, said gaseous fluid being fed into the reaction chamber at the same time as the solution or mixture at a temperature no lower than the decomposition temperature of the nitrates, and having a mechanical energy high enough to generate a fine spray of the solution or a fine dispersion of the solid mixture, and instantly decompose the nitrates. The resulting oxide mixtures may be used to prepare nuclear fuels.

    摘要翻译: PCT No.PCT / FR96 / 01993 Sec。 371日期1999年3月2日 102(e)1999年3月2日PCT PCT 1996年12月12日PCT公布。 公开号WO97 / 21629 日期1996年6月19日一种热分解方法,用于制备以水溶液或固体混合物形式的硝酸盐具有合适反应性的金属氧化物粉末混合物的核工业。 根据该方法,溶液或固体混合物在反应室的接触区域中与气体流体热机械接触,所述气态流体在溶液或混合物的同时在不同温度下进料到反应室中 低于硝酸盐的分解温度,并且具有足够高的机械能以产生溶液的细微喷雾或固体混合物的细分散体,并立即分解硝酸盐。 所得氧化物混合物可用于制备核燃料。