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    Process and apparatus for manufacturing polycrystalline silicon, and process for manufacturing silicon wafer for solar cell
    3.
    发明授权
    Process and apparatus for manufacturing polycrystalline silicon, and process for manufacturing silicon wafer for solar cell 失效
    用于制造多晶硅的工艺和设备，以及用于制造太阳能电池用硅晶片的工艺

    公开(公告)号：US5961944A

    公开(公告)日：1999-10-05

    申请号：US894030

    申请日：1997-08-08

    申请人： Fukuo Aratani ,  Yoshiei Kato ,  Yasuhiko Sakaguchi ,  Noriyoshi Yuge ,  Hiroyuki Baba ,  Naomichi Nakamura ,  Kazuhiro Hanazawa

    发明人： Fukuo Aratani ,  Yoshiei Kato ,  Yasuhiko Sakaguchi ,  Noriyoshi Yuge ,  Hiroyuki Baba ,  Naomichi Nakamura ,  Kazuhiro Hanazawa

    IPC分类号： C01B33/021 ,  C30B11/00 ,  H01L31/18 ,  C01B33/02

    CPC分类号： C30B29/06 ,  C01B33/021 ,  C30B11/00 ,  H01L31/182 ,  Y02E10/546 ,  Y02P70/521

    摘要： An object of the present invention is to provide a process and apparatus for the continuous flow production of polycrystalline silicon from metallic silicon or silicon oxide as a raw material and also for the manufacture of a wafer by using it, which process and apparatus permit the mass production at a low cost. The above object can be attained by the manufacture of polycrystalline silicon and a silicon wafer for a solar cell by the following steps: (A) smelting metallic silicon under reduced pressure, carrying out solidification for the removal of the impurity components from the melt, thereby obtaining a first ingot, (B) removing the impurity concentrated portion from the ingot by cutting, (C) re-melting the remaining portion, removing boron and carbon from the melt by oxidizing under an oxidizing atmosphere, and blowing a mixed gas of argon and water to carry out deoxidization, (D) casting the deoxidized melt into a mold, and carried out directional solidification to obtain a second ingot, and (E) removing the impurity concentrated portion of the ingot obtained by directional solidification by cutting.

    摘要翻译： PCT No.PCT / JP96 / 02965 Sec。 371日期：1997年8月8日 102（e）日期1997年8月8日PCT PCT 1996年10月14日PCT公布。 公开号WO98 / 16466 日本1998年4月23日本发明的目的是提供一种用于从作为原料的金属硅或氧化硅连续流动生产多晶硅并且还通过使用它来制造晶片的方法和装置，该方法 并且设备允许以低成本进行批量生产。 上述目的可以通过以下步骤制造太阳能电池的多晶硅和硅晶片来实现：（A）在减压下熔融金属硅，进行凝固以从熔体中除去杂质成分，由此 （B）通过切割从锭中除去杂质浓缩部分，（C）再熔融剩余部分，在氧化气氛下氧化从熔体中除去硼和碳，并吹入氩气的混合气体 和水进行脱氧，（D）将脱氧后的熔体铸造到模具中，进行定向凝固以获得第二锭，（E）通过切割去除通过定向凝固获得的锭的杂质浓缩部分。

    Method of refining of high purity steel
    4.
    发明授权
    Method of refining of high purity steel 失效
    高纯度钢精炼方法

    公开(公告)号：US5304231A

    公开(公告)日：1994-04-19

    申请号：US993388

    申请日：1992-12-18

    申请人： Yoshiei Kato ,  Tadasu Kirihara ,  Seiji Taguchi ,  Tetsuya Fujii ,  Shigeru Omiya ,  Masahito Suito

    发明人： Yoshiei Kato ,  Tadasu Kirihara ,  Seiji Taguchi ,  Tetsuya Fujii ,  Shigeru Omiya ,  Masahito Suito

    IPC分类号： C21C7/10 ,  C21C7/02

    CPC分类号： C21C7/10

    摘要： Disclosed is a method of refining of a high purity steel capable of effectively lowering impurities in molten steel into respective ultra-low ranges. In secondary refining for molten steel after a molten iron prerefining process and a converting process, a reducing agent and a flux are added on the bath surface within a ladle containing the molten steel decarburized in a converter so that the composition of slag on the bath surface is adjusted in such a manner that the total concentration of FeO and MnO becomes 5 wt % or less, and subsequently, impurities in the molten steel are effectively lowered into respective ultra-low ranges using a RH vacuum degassing unit.

    摘要翻译： 公开了一种能够将钢水中的杂质有效地降低到各自的超低范围内的高纯度钢的精炼方法。 在铁水预精炼工艺和转化过程之后的钢水二次精炼中，在包含在转炉中脱碳的钢水的钢包中的浴表面上加入还原剂和助熔剂，使得浴表面上的炉渣组成 以使FeO和MnO的总浓度成为5重量％以下的方式进行调整，随后使用RH真空脱气装置将钢水中的杂质有效地降低到各自的超低范围内。

    Method for cooling tuyeres
    7.
    发明授权
    Method for cooling tuyeres 失效
    冷却风口的方法

    公开(公告)号：US4330108A

    公开(公告)日：1982-05-18

    申请号：US237626

    申请日：1981-02-24

    申请人： Kyoji Nakanishi ,  Kenji Saito ,  Yoshiei Kato ,  Tsutomu Nozaki ,  Toshihiko Emi

    发明人： Kyoji Nakanishi ,  Kenji Saito ,  Yoshiei Kato ,  Tsutomu Nozaki ,  Toshihiko Emi

    IPC分类号： C21C5/34 ,  C21C5/48 ,  C21C7/072 ,  C21B7/16

    CPC分类号： C21C5/34 ,  C21C5/48

    摘要： In a method for cooling tuyeres when molten iron is refined by blowing a refining gas containing oxygen, and by setting tuyeres below or above the meniscus of iron bath in a vessel for refining the molten iron, wherein concentric tuyeres are used and a refining gas containing oxygen gas is blown through the inner pipe of the concentric tuyere and a fluid for protecting the tuyeres is blown through the outer pipe of the tuyere so that the protecting fluid surrounds the refining gas in a sheath form to cool the top ends of the tuyeres, the protecting fluid being a mixture of gaseous or liquid carbon dioxide and carbon fine particles.

    摘要翻译： 在通过吹入含氧气的精炼气体来精炼铁水的冷却风口的方法中，通过在用于精炼铁水的容器中将铁浴的弯液面放置在铁水槽的下方或上方，使用同心风口和含有精炼气体的精炼气体， 氧气通过同心风口的内管吹送，用于保护风口的流体通过风口的外管吹送，使得保护流体以鞘形式包围精炼气体以冷却风口的顶端， 保护流体是气态或液态二氧化碳和碳细颗粒的混合物。

    Method of manufacturing steel containing Ca
    8.
    发明授权
    Method of manufacturing steel containing Ca 失效
    含Ca的钢的制造方法

    公开(公告)号：US5609199A

    公开(公告)日：1997-03-11

    申请号：US489994

    申请日：1995-06-12

    申请人： Yoshiei Kato ,  Seiko Nara ,  Kenichi Sorimachi

    发明人： Yoshiei Kato ,  Seiko Nara ,  Kenichi Sorimachi

    IPC分类号： B22D1/00 ,  B22D11/10 ,  B22D11/108 ,  C21C7/00 ,  C21C7/04 ,  C21C7/064 ,  C21C7/10

    CPC分类号： B22D1/00 ,  C21C7/0006 ,  C21C7/04 ,  C21C7/064 ,  C21C7/10

    摘要： A method of manufacturing steel having Ca including the steps of adding Ca metal or alloy containing Ca to molten steel in a ladle that has been killed by adding a reducing agent, such as Al, to the molten steel in a predetermined quantity when or after the molten steel has been discharged from a converter, subjecting the molten steel to a vacuum degasification process, and supplying the molten steel to a mold through a tundish so that the molten steel is continuously cast, wherein Ca metal or alloy containing Ca is added to the molten steel in the tundish.

    摘要翻译： 一种制造具有Ca的钢的方法，包括以下步骤：将Ca金属或含有Ca的合金添加到钢水中，所述钢包中已经通过在钢水中加入还原剂例如Al而以等于或等于 从转炉中排出钢水，对钢水进行真空脱气处理，并通过中间包将钢水供给到模具，使钢水连续铸造，其中将含有Ca的Ca金属或合金添加到 中间包中的钢水。

    Method of producing molten aluminum-killed steel for thin steel sheet
    9.
    发明授权
    Method of producing molten aluminum-killed steel for thin steel sheet 失效
    生产用于薄钢板的熔融铝镇静钢的方法

    公开(公告)号：US5616188A

    公开(公告)日：1997-04-01

    申请号：US540868

    申请日：1995-10-11

    申请人： Yoshiei Kato ,  Seiji Nabeshima ,  Yoichi Ito ,  Kenichi Sorimachi

    发明人： Yoshiei Kato ,  Seiji Nabeshima ,  Yoichi Ito ,  Kenichi Sorimachi

    IPC分类号： C21C7/04 ,  C21C7/06 ,  C21C7/10 ,  C22C38/04 ,  C21C7/076

    CPC分类号： C22C38/04 ,  C21C7/10

    摘要： In a method of producing a molten aluminum-killed steel for forming a thin steel sheet, molten steel tapped from a converter is decarburized to a predetermined carbon concentration by using a vacuum degasser, and Al is added to the molten steel in the vacuum degasser to deoxidize the molten steel. A material containing metallic Ca is then added to the molten steel to produce a Ca content of about 0.0005 to 0.005 wt %, and to satisfy [%Ca].times.[%S].ltoreq. about 2.times.1 0.sup.-5. Thereafter, degassing is performed on the molten steel.

    摘要翻译： 在制造用于形成薄钢板的熔融铝镇静钢的方法中，通过使用真空脱气机将从转炉挖出的钢水脱碳至预定的碳浓度，并将Al加入真空脱气机中的钢水中 使钢水脱氧。 然后将含有金属Ca的材料添加到钢水中以产生约0.0005至0.005重量％的Ca含量，并且满足[％Ca] x [％S]≤2×10-5。 此后，对钢水进行脱气。