Process and apparatus for obtaining silicon from fluosilicic acid
    2.
    发明授权
    Process and apparatus for obtaining silicon from fluosilicic acid 失效
    从氟硅酸获得硅的方法和设备

    公开(公告)号:US4529576A

    公开(公告)日:1985-07-16

    申请号:US453457

    申请日:1982-12-27

    摘要: Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (liquid Na preferred) is carried out essentialy continuously by injecting of reactants in substantially stoichiometric proportions into a reaction chamber having a controlled temperature thereby to form a mist or dispersion of reactants. The reactants being supplied at such a rate and temperature that the reaction takes place far enough away from the entry region to avoid plugging of reactants at the entry region, the reaction is completed and whereby essentially all reaction product solidifies and forms a free flowing powder before reaction product hits a reaction chamber wall. Thus, the reaction product does not adhere to the reaction chamber wall or pick up impurities therefrom. Separation of reaction products is easily carried out by either a leach or melt separation process.

    摘要翻译: 用于生产低成本,高纯度太阳能级Si的方法,其中通过将基本上化学计量比的反应物注入具有碱金属的反应室中,通过碱金属(优选液体Na)进行还原反应,优选还原SiF 4的方法是连续进行的 控制温度,从而形成反应物的雾或分散体。 反应物以这样的速率和温度供应,使得反应进入远离进入区域足够远,以避免入口区域处的反应物堵塞,反应完成,并且基本上所有的反应产物固化并在之前形成自由流动的粉末 反应产物撞击反应室壁。 因此,反应产物不粘附到反应室壁或从其中吸收杂质。 反应产物的分离容易通过浸出或熔融分离过程进行。

    High temperature sample heating for spectroscopic studies apparatus
    7.
    发明授权
    High temperature sample heating for spectroscopic studies apparatus 失效
    用于光谱研究装置的高温样品加热

    公开(公告)号:US4489275A

    公开(公告)日:1984-12-18

    申请号:US416337

    申请日:1982-09-09

    IPC分类号: G01R33/31 G01N27/00

    CPC分类号: G01R33/31

    摘要: In accordance with the invention, an improved sample heating apparatus is provided comprising an evacuated cylindrical envelope having a first portion of reduced diameter and capable of fitting into a cavity of a spectroscopic analysis device and capable of receiving a sample holder therein. A second portion of the cylindrical envelope has a larger diameter and heating means mounted therein. Radiation shielding means are also carried within the evacuated envelope of the larger diameter portion. The apparatus is also provided with gettering means to react with gases within the evacuated envelope.

    摘要翻译: 根据本发明,提供了一种改进的样品加热装置,其包括具有减小直径的第一部分并能够装配到光谱分析装置的空腔中并且能够在其中容纳样品保持器的抽真空的圆柱形外壳。 圆柱形外壳的第二部分具有较大的直径,并且加热装置安装在其中。 辐射屏蔽装置也承载在较大直径部分的抽空外壳内。 该设备还设有吸气装置,以与抽空的外壳内的气体反应。