Process and unit for preparing alloyed and non-alloyed reactive metals
by reduction
    2.
    发明授权
    Process and unit for preparing alloyed and non-alloyed reactive metals by reduction 失效
    通过还原制备合金和非合金反应性金属的工艺和单元

    公开(公告)号:US4830665A

    公开(公告)日:1989-05-16

    申请号:US496876

    申请日:1983-05-22

    申请人: Rene Winand

    发明人: Rene Winand

    摘要: A process for preparing alloyed or non-alloyed, reactive metals by reaction of halides thereof, in particular chlorides, with a reducing agent at a temperature higher than the melting temperature of the metal to be developed, comprises solidifying the developed metal while maintaining in the reaction zone wherein the reduction proceeds, a layer of this metal in the liquid state, at a temperature higher than the boiling or sublimation temperature of the other reaction products at the pressure at which the reduction develops, these other reaction products being substantially continuously discharged in the gaseous state.

    摘要翻译: 通过其卤化物,特别是氯化物与还原剂在还原剂中的反应制备合金或非合金的反应性金属的方法,该方法是在高于待显影金属的熔融温度的温度下固化显影的金属,同时保持在 其中还原进行的反应区域是处于液态的该金属层,在比其它反应产物的沸腾或升华温度高的温度下,在还原产生的压力下,这些其它反应产物基本上连续排出 气态。

    Apparatus for obtaining silicon from fluosilicic acid
    3.
    发明授权
    Apparatus for obtaining silicon from fluosilicic acid 失效
    用于从氟硅酸获得硅的设备

    公开(公告)号:US4781565A

    公开(公告)日:1988-11-01

    申请号:US835398

    申请日:1986-03-03

    申请人: Angel Sanjurjo

    发明人: Angel Sanjurjo

    摘要: Apparatus for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt. The melt separation is provided by openings in the reaction chamber wall between about 2 to about 3.5 millimeters in width. The Si is retained within the reaction chamber due to its surface tension.

    摘要翻译: 用于制造低成本,高纯度太阳能级Si的装置,其中通过碱金属(优选Na)的还原反应(优选SiF 4的还原)是通过将反应物喷射到反应室中的速率和温度来进行的, 反应将进入离入口区足够远的位置,以避免在入口区域堵塞反应物,并且其中熔体中的分离从反应中连续进行,并且可以直接从熔体中浇铸Si。 熔体分离由反应室壁中的开口提供,宽度为约2至约3.5毫米。 由于其表面张力,Si保留在反应室内。

    Metal extraction process
    4.
    发明授权
    Metal extraction process 失效
    金属提取过程

    公开(公告)号:US4100252A

    公开(公告)日:1978-07-11

    申请号:US781753

    申请日:1977-03-28

    申请人: Frank Pitts

    发明人: Frank Pitts

    IPC分类号: C01G31/00 C22B34/14 C22B34/20

    CPC分类号: C22B34/14 C01G31/00 C22B34/20

    摘要: The present invention provides a method for recovering vanadium, niobium, tantalum and zirconium from vanadiferous residues arising from the chlorination of titaniferous ores. Such residues contain chlorides of these metals and/or titanium, aluminum, iron, chromium and manganese together with carbon and unreacted titaniferous ore. The method comprises first moistening these residues with water and then treating them with hot water for a sufficient period of time to extract substantially all the vanadium into solution which is separated from insoluble material comprising carbon and unreacted titaniferous ore together with substantially all the niobium, tantalum and zirconium.

    摘要翻译: 本发明提供了一种从含钛矿石氯化产生的钒渣中回收钒,铌,钽和锆的方法。 这些残留物含有这些金属和/或钛,铝,铁,铬和锰以及碳和未反应的含钛矿石的氯化物。 该方法首先首先用水润湿这些残留物,然后用热水处理足够的时间以将基本上所有的钒提取到溶液中,所述溶液与包含碳和未反应的含钛矿石的不溶物质一起以及基本上所有的铌,钽 和锆。

    Apparatus for obtaining silicon from fluosilicic acid
    9.
    发明授权
    Apparatus for obtaining silicon from fluosilicic acid 失效
    用于从氟硅酸获得硅的设备

    公开(公告)号:US4597948A

    公开(公告)日:1986-07-01

    申请号:US569439

    申请日:1984-01-09

    申请人: Angel Sanjurjo

    发明人: Angel Sanjurjo

    摘要: Apparatus for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt. The melt separation is provided by openings in the reaction chamber wall between about 2 and 3.5 millimeters in width. The Si is retained within the reaction chamber due to its surface tension.

    摘要翻译: 用于制造低成本,高纯度太阳能级Si的装置,其中通过碱金属(优选Na)的还原反应(优选SiF 4的还原)是通过将反应物喷射到反应室中的速率和温度来进行的,所述速率和温度导致 反应将进入离入口区足够远的位置,以避免在入口区域堵塞反应物,并且其中熔体中的分离从反应中连续进行,并且可以直接从熔体中浇铸Si。 熔体分离由反应室壁中的开口提供,宽度为约2至3.5毫米。 由于其表面张力,Si保留在反应室内。

    Process for recovery of niobium values for use in preparing niobium
alloy products
    10.
    发明授权
    Process for recovery of niobium values for use in preparing niobium alloy products 失效
    用于回收铌合金制品的方法

    公开(公告)号:US4164417A

    公开(公告)日:1979-08-14

    申请号:US901069

    申请日:1978-04-28

    摘要: The invention disclosed provides a process for recovering niobium values from aqueous hydrofluoric acid solutions by evaporating said solution to dryness and baking the residue at temperatures of 150.degree. to 250.degree. C. The solid residue is niobium oxyfluroide (NbO.sub.2 F) which may then be exothermically reduced with aluminum in the presence of an alloying element such as iron, nickel, or chromium to produce a niobium alloy. The evaporated hydrofluoric acid may be recovered by condensing or absorbing the evolved vapors.

    摘要翻译: 所公开的发明提供了一种从氢氟酸水溶液中回收铌值的方法,通过将所述溶液蒸发至干,并在150-250℃的温度下烘烤该残留物。固体残余物是铌氧芴(NbO 2 F),然后可以放热降低 在合金元素例如铁,镍或铬的存在下用铝制造铌合金。 蒸发的氢氟酸可以通过冷凝或吸收放出的蒸气来回收。