CALCINING CHAMBER AND PROCESS
    1.
    发明申请
    CALCINING CHAMBER AND PROCESS 审中-公开
    计算室和过程

    公开(公告)号:WO2012012228A2

    公开(公告)日:2012-01-26

    申请号:PCT/US2011/043723

    申请日:2011-07-12

    Inventor: FORKIN, Matthew

    CPC classification number: C01B33/10 C01B33/10705 F27B14/08

    Abstract: Solid materials capable of producing toxic and/or corrosive gases by thermal decomposition are heated in a stirred in a sealable crucible. The stirring rod is supported on a downward extending shaft using a combination of a lip seal or other mechanical seal and a ferro-fluidic seal or rotary feed through. The lip seal region is evacuated to reduce the chance that the small upward flow of corrosive gas will detrimentally react with components of the ferro-fluid. In a process for calcining sodium fluorosilicate to product silicon tetra-fluoride gas, the lip seal and ferro-fluidic seal regions are purged and/or blanked to prevent the absorption of water during an initial drying phase. Accordingly, the reaction of water with silicon tetra-fluoride to produce corrosive hydrogen fluoride gas is prevented.

    Abstract translation: 能够通过热分解产生有毒和/或腐蚀性气体的固体材料在可密封的坩埚中被搅拌加热。 搅拌杆使用唇形密封件或其他机械密封件与铁流体密封件或旋转进料通过的组合来支撑在向下延伸的轴上。 唇密封区域被抽空以减少小的向上流动的腐蚀性气体将有害地与铁液体的组分反应的机会。 在将氟硅酸钠煅烧成四氟化硅气体的方法中,唇密封和铁流体密封区域被清洗和/或冲切,以防止在初始干燥阶段期间吸收水分。 因此,防止水与四氟化硅反应产生腐蚀性氟化氢气体。

    PROCEDE DE DOSAGE D'ELEMENTS DANS UN SUBSTRAT POUR L'OPTIQUE, L'ELECTRONIQUE OU L'OPTOELECTRONIQUE
    3.
    发明申请
    PROCEDE DE DOSAGE D'ELEMENTS DANS UN SUBSTRAT POUR L'OPTIQUE, L'ELECTRONIQUE OU L'OPTOELECTRONIQUE 审中-公开
    用于测量光学元件,电子或光电子元件的元件的方法

    公开(公告)号:WO2002065097A1

    公开(公告)日:2002-08-22

    申请号:PCT/FR2002/000521

    申请日:2002-02-12

    Abstract: L'invention concerne un procédé de dosage d'au moins un élément dans un matériau (2) comprenant du silicium, comprenant les étapes suivantes: décomposer au moins une partie du matériau (2) avec un agent d'attaque (6) pour former une solution contenant de l'acide hexafluorosilicique (7) et les éléments à doser; chauffer cette solution jusqu'à une température telle qu'au moins une partie substantielle de l'acide hexafluorosilicique (7) soit transformée en tétrafluorure de silicium et qu'une partie substantielle du tétrafluorure de silicium s'évapore, pour obtenir une solution pour dosage dans laquelle la teneur en silicium soit sensiblement réduite tout en conservant la quantité de chaque élément à doser; et doser au moins un élément contenu dans la solution pour dosage. Application au domaine de la fabrication de substrats ou de composants pour l'optique, l'électronique ou l'optoélectrique, et notamment au contôle qualité.

    Abstract translation: 本发明涉及一种用于测量含硅材料(2)中的至少一种元素的方法,包括以下步骤:用蚀刻剂(6)分解至少部分材料(2)以形成含有六氟硅酸(7 )和要测量的元素; 将所述溶液加热到至少大部分六氟硅酸(7)转化成四氟化硅并且大部分四氟化硅蒸发的温度,以获得测量溶液,其中硅含量基本上降低,同时 保存要测量的每个元素的量; 并测量包含在测量溶液中的至少一种元素。 本发明可应用于用于光学,电子学或光电子学的衬底或组件的制造领域,特别是用于质量控制。

    METHOD FOR PRODUCING SILICON TETRAFLUORIDE FROM URANIUM OXYFLUORIDE
    4.
    发明申请
    METHOD FOR PRODUCING SILICON TETRAFLUORIDE FROM URANIUM OXYFLUORIDE 审中-公开
    从氧化铀生产硅四氯化物的方法

    公开(公告)号:WO00058212A1

    公开(公告)日:2000-10-05

    申请号:PCT/US2000/003082

    申请日:2000-02-07

    CPC classification number: C01B33/10705 C01G43/01 C01P2002/72

    Abstract: A method for producing silicon tetrafluoride includes combining uranium oxyfluoride and silicon dioxide; heating the combination below the melting point of the uranium oxyfluoride (14) to sufficiently react the uranium oxyfluoride and the silicon dioxide to produce non-radioactive silicon tetrafluoride and an oxide of uranium (16); and removing the silicon tetrafluoride (18).

    Abstract translation: 四氟化硅的制造方法包括将铀氧氟化物与二氧化硅结合, 将低于氟氧化铀(14)的熔点的组合加热以使氟化铀与二氧化硅充分反应以产生非放射性四氟化硅和铀氧化物(16); 并除去四氟化硅(18)。

    CONTINUOUS PRODUCTION METHOD FOR SILICON TETRAFLUORIDE USING SILICA AND HYDROGEN FLUORIDE
    5.
    发明申请
    CONTINUOUS PRODUCTION METHOD FOR SILICON TETRAFLUORIDE USING SILICA AND HYDROGEN FLUORIDE 审中-公开
    使用二氧化硅和氢氟酸的硅四氯化物的连续生产方法

    公开(公告)号:WO2013019082A3

    公开(公告)日:2013-06-13

    申请号:PCT/KR2012006174

    申请日:2012-08-02

    CPC classification number: C01B33/10705

    Abstract: The present invention relates to a continuous production method for silicon tetrafluoride (SiF4) using silica (SiO2) and hydrogen fluoride (HF), and, more specifically, relates to a continuous production method for silicon tetrafluoride, wherein silica and hydrogen fluoride (HF) are reacted by filling a bed reactor with crystalline or amorphous silica in the solid state and blowing hydrogen fluoride gas directly therein, such that it is possible to continuously produce silicon tetrafluoride in a high yield, and it is possible to use diverse forms of silica as raw materials and hence it is possible to ensure relatively economic operation.

    Abstract translation: 本发明涉及使用二氧化硅(SiO 2)和氟化氢(HF)的四氟化硅(SiF 4)的连续制造方法,更具体地,涉及四氟化硅的连续制造方法,其中二氧化硅和氟化氢(HF) 通过用固体状态的结晶或无定形二氧化硅填充床反应器并直接在其中吹入氟化氢气体,使得可以以高产率连续生产四氟化硅,并且可以使用不同形式的二氧化硅作为 原材料,因此有可能确保相对经济运行。

    METHOD OF PREPARING SILICON TETRAFLUORIDE BY USING CRYSTALLINE SILICA
    7.
    发明申请
    METHOD OF PREPARING SILICON TETRAFLUORIDE BY USING CRYSTALLINE SILICA 审中-公开
    使用结晶二氧化硅制备硅四氯化物的方法

    公开(公告)号:WO2011136517A2

    公开(公告)日:2011-11-03

    申请号:PCT/KR2011/002981

    申请日:2011-04-25

    CPC classification number: C01B9/08 C01B33/10705

    Abstract: The present invention relates to a method of preparing silicon tetrafluoride (STF, SiF 4 ) by using crystalline silica (SiO 2 ). More specifically, the present invention relates to a method of preparing silicon tetrafluoride by reacting finely divided crystalline silica and hydrogen fluoride (HF) in the presence of concentrated sulfuric acid in a continuous manner. According to the present invention, silicon tetrafluoride can be economically prepared with high yield from crystalline silica which exists abundantly in the natural world, and the process productivity, workability and controllability can be improved remarkably. In addition, the problem of corrosion in the recycling process by concentrating diluted sulfuric acid can be solved through controlling the ratio between reactants such that no incorporated hydrogen fluoride remains after the reaction, or on the other hand the difficulty in filtering the product by finely divided particles can be avoided through controlling the ratio between reactants such that the crystalline silica reactant is consumed completely. Furthermore, since the used sulfuric acid can be isolated and recycled, the generation of discarded sulfuric acid can be minimized.

    Abstract translation: 本发明涉及通过使用结晶二氧化硅(SiO 2)制备四氟化硅(STF,SiF 4)的方法。 更具体地说,本发明涉及通过在浓硫酸的存在下以连续的方式使细碎的结晶二氧化硅和氟化氢(HF)反应制备四氟化硅的方法。 根据本发明,可以从自然界中大量存在的结晶二氧化硅以高产率经济地制备四氟化硅,并且可以显着提高工艺生产率,可加工性和可控性。 此外,通过浓缩稀硫酸的再循环过程中的腐蚀问题可以通过控制反应物之间的比例来解决,使得在反应后不残留加入的氟化氢,或者另一方面难以通过细分的过滤产物 可以通过控制反应物之间的比例使得结晶二氧化硅反应物完全消耗来避免颗粒。 此外,由于使用的硫酸可以被分离和再循环,所以废弃硫酸的产生可以最小化。

    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON
    8.
    发明申请
    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON 审中-公开
    生产多晶硅的方法

    公开(公告)号:WO2010046751A8

    公开(公告)日:2010-08-05

    申请号:PCT/IB2009007166

    申请日:2009-10-20

    CPC classification number: C01B33/037 C01B33/029 C01B33/043 C01B33/10705

    Abstract: The process for the production of polycrystalline silicon starting from metallurgical silicon, milled up to a predetermined granulometry, implies the reaction of metallurgical silicon with anhydrous hydrogen fluoride (HF), to obtain silicon tetrafluoride (SiF4), and to operate the synthesis of monosilane (SiH4) by a reaction of hydrogenation of the silicon tetrafluoride (SiF4) with alkaline or alkaline earth metals halide in fluid medium of organic solvent or melt salts. Then a thermal decomposition of said monosilane (SiH4) in a boiling-pseudo fluidized bed reactor is carried out, to obtain high purity granulated polycrystalline silicon.

    Abstract translation: 从冶金硅开始生产多晶硅的方法研磨至预定的粒度,意味着冶金硅与无水氟化氢(HF)的反应,以获得四氟化硅(SiF 4),并进行合成甲硅烷( SiH 4)通过四氟化硅(SiF 4)与碱金属或碱土金属卤化物在有机溶剂或熔盐的流体介质中的氢化反应。 然后,在沸腾型流化床反应器中进行所述甲硅烷(SiH 4)的热分解,得到高纯度粒状多晶硅。

    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON
    9.
    发明申请
    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON 审中-公开
    生产多晶硅的方法

    公开(公告)号:WO2010046751A3

    公开(公告)日:2010-06-17

    申请号:PCT/IB2009007166

    申请日:2009-10-20

    CPC classification number: C01B33/037 C01B33/029 C01B33/043 C01B33/10705

    Abstract: The process for the production of polycrystalline silicon starting from metallurgical silicon, milled up to a predetermined granulometry, implies the reaction of metallurgical silicon with anhydrous hydrogen fluoride (HF), to obtain silicon tetrafluoride (SiF4), and to operate the synthesis of monosilane (SiH4) by a reaction of hydrogenation of the silicon tetrafluoride (SiF4) with alkaline or alkaline earth metals halide in fluid medium of organic solvent or melt salts. Then a thermal decomposition of said monosilane (SiH4) in a boiling-pseudo fluidized bed reactor is carried out, to obtain high purity granulated polycrystalline silicon.

    Abstract translation: 从冶金硅开始生产多晶硅的工艺(研磨至预定粒度)意味着冶金硅与无水氟化氢(HF)的反应,获得四氟化硅(SiF 4),并且操作合成甲硅烷( SiH4)通过四氟化硅(SiF4)与碱金属或碱土金属卤化物在有机溶剂或熔融盐的流体介质中的氢化反应来制备。 然后在沸腾 - 伪流化床反应器中进行所述甲硅烷(SiH4)的热分解,以获得高纯度的粒状多晶硅。

    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON
    10.
    发明申请
    METHOD FOR THE PRODUCTION OF POLYCRYSTALLINE SILICON 审中-公开
    生产多晶硅的方法

    公开(公告)号:WO2010046751A2

    公开(公告)日:2010-04-29

    申请号:PCT/IB2009/007166

    申请日:2009-10-20

    CPC classification number: C01B33/037 C01B33/029 C01B33/043 C01B33/10705

    Abstract: The process for the production of polycrystalline silicon starting from metallurgical silicon, milled up to a predetermined granulometry, implies the reaction of metallurgical silicon with anhydrous hydrogen fluoride (HF), to obtain silicon tetrafluoride (SiF4), and to operate the synthesis of monosilane (SiH4) by a reaction of hydrogenation of the silicon tetrafluoride (SiF4) with alkaline or alkaline earth metals halide in fluid medium of organic solvent or melt salts. Then a thermal decomposition of said monosilane (SiH4) in a boiling-pseudo fluidized bed reactor is carried out, to obtain high purity granulated polycrystalline silicon.

    Abstract translation: 从冶金硅开始生产多晶硅的方法(研磨至预定粒度)意味着冶金硅与无水氟化氢(HF)的反应以获得四氟化硅(SiF 4), 并且通过四氟化硅(SiF 4)与碱金属或碱土金属卤化物在有机溶剂或熔盐的流体介质中的氢化反应来操作甲硅烷(SiH 4)的合成。 然后在沸腾 - 伪流化床反应器中进行所述甲硅烷(SiH4)的热分解,以获得高纯度的粒状多晶硅。

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