Method of preparing silicon from sodium fluosilicate
    61.
    发明授权
    Method of preparing silicon from sodium fluosilicate 失效
    从氟硅酸钠制备硅的方法

    公开(公告)号:US4446120A

    公开(公告)日:1984-05-01

    申请号:US344084

    申请日:1982-01-29

    CPC分类号: C01B33/033

    摘要: A process for preparing high purity silicon metal from Na.sub.2 SiF.sub.6 (sodium fluosilicate). The sodium fluosilicate is heated to decomposition temperature to form NaF, which retains most of the impurities, and gaseous SiF.sub.4. The SiF.sub.4 is then reduced by the bomb reduction method using a reductant having a low packing density.

    摘要翻译: 从Na2SiF6(氟硅酸钠)制备高纯度硅金属的方法。 将氟硅酸钠加热至分解温度以形成NaF,其保留大部分杂质和气态SiF 4。 然后通过使用具有低填充密度的还原剂的炸弹还原法减少SiF 4。