公开(公告)号：US4592778A

公开(公告)日：1986-06-03

申请号：US745922

申请日：1985-06-18

申请人： Tetsuya Fujii ,  Nobuo Harada ,  Shuji Takeuchi ,  Yoshiei Kato ,  Hideo Nakamura ,  Toshikazu Sakuraya ,  Yasuhiro Habu

发明人： Tetsuya Fujii ,  Nobuo Harada ,  Shuji Takeuchi ,  Yoshiei Kato ,  Hideo Nakamura ,  Toshikazu Sakuraya ,  Yasuhiro Habu

IPC分类号： C21C5/28 ,  C21C5/35 ,  C21C7/00

CPC分类号： C21C5/28 ,  C21C5/35

摘要： A process for producing an extremely low carbon steel in a top- and bottom-blown converter. The process is characterized in top-blowing a mixed gas of oxygen gas and an inert gas onto a molten steel in the top- and bottom-blown converter. The mixed gas is blown through a top-blowing lance at the final decarburization stage, while a gas (selected from a group consisting of an inert gas, oxygen gas and a mixture of oxygen and an inert gas) is bottom-blown into the molten steel in the converter.

摘要翻译： 一种用于在顶吹和底吹转炉中生产极低碳钢的方法。 该方法的特征在于将顶部和底部吹制转炉中的氧气和惰性气体的混合气体顶吹到钢水上。 在最终脱碳阶段，通过顶吹喷枪吹入混合气体，同时将气体（选自惰性气体，氧气和氧气和惰性气体的混合物）从底部吹入熔融 钢在转炉。

公开(公告)号：US4596600A

公开(公告)日：1986-06-24

申请号：US771212

申请日：1985-08-30

申请人： Tetsuya Fujii ,  Toshikazu Sakuraya ,  Hideo Nakamura ,  Yasuhiro Habu ,  Takuo Imai

发明人： Tetsuya Fujii ,  Toshikazu Sakuraya ,  Hideo Nakamura ,  Yasuhiro Habu ,  Takuo Imai

IPC分类号： C21C5/34 ,  C21C5/35 ,  C21C5/38 ,  C21C7/10

CPC分类号： C21C5/35 ,  C21C5/38

摘要： A steel-making process in a converter, which includes using a carbon monoxide gas as an agitating gas supplied from a position lower than molten metal bath level.

摘要翻译： 一种转炉中的炼钢工艺，包括使用一氧化碳气体作为从低于熔融金属液面的位置供给的搅拌气体。

公开(公告)号：US4436287A

公开(公告)日：1984-03-13

申请号：US511511

申请日：1983-07-06

申请人： Toshikazu Sakuraya ,  Hideo Nakamura ,  Nobuo Harada ,  Tetsuya Fujii ,  Toshihiko Emi

发明人： Toshikazu Sakuraya ,  Hideo Nakamura ,  Nobuo Harada ,  Tetsuya Fujii ,  Toshihiko Emi

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

CPC分类号： C21C5/48 ,  C21C5/34

摘要： Wear of tuyeres for refining a molten iron is prevented by blowing a CO-containing gas having the defined flow amount, oxygen gas flow amount and CO gas concentration as a shrouding gas which surrounds a core refining gas flow containing oxygen gas through tuyeres of concentric pipes. As the shrouding gas for cooling and protecting the tuyeres, use may be made of an exhaust gas discharged and recovered from a converter or a blast furnace by controlling the concentrations of CO and N.sub.2 in the exhaust gas to the specific limitations.

摘要翻译： 通过将具有规定流量，氧气流量和CO气体浓度的含CO气体作为围绕通过含有氧气的核心精炼气流的覆盖气体吹入通过同心管的风口来防止风口的磨损 。 作为用于冷却和保护风口的遮蔽气体，可以通过将废气中的CO和N 2的浓度控制在特定的限制条件下，使用从转炉或高炉中排出和回收的废气。

公开(公告)号：US5106411A

公开(公告)日：1992-04-21

申请号：US516209

申请日：1990-04-30

申请人： Yuji Miki ,  Hidenari Kitaoka ,  Tetsuya Fujii ,  Shuji Takeuchi ,  Kenichi Sorimachi ,  Toshikazu Sakuraya ,  Fumio Sudo

发明人： Yuji Miki ,  Hidenari Kitaoka ,  Tetsuya Fujii ,  Shuji Takeuchi ,  Kenichi Sorimachi ,  Toshikazu Sakuraya ,  Fumio Sudo

IPC分类号： C22B9/02

CPC分类号： C22B9/02 ,  Y02P10/234

摘要： A method of removing non-metallic inclusions from a molten metal by allowing the molten metal to pass through at least first and second vessels which are intermediate between a ladle and a mold. The molten metal is made to stay in the vessel for a period not shorter than 40 seconds while a horizontal rotation is imparted to the molten metal in the first vessel. The molten metal is then transferred from the first vessel to the second vessel. The molten metal in the second vessel is then heated. This method is suitably carried out by an apparatus comprising a first vessel having a discharge opening at its bottom and surrounded by a rotational magnetic field generating device for centrifugation of the molten metal in the first vessel, and a second vessel for receiving the molten metal discharged from the first vessel and provided with a heating device for heating the molten metal received therein.

公开(公告)号：US5375648A

公开(公告)日：1994-12-27

申请号：US116138

申请日：1993-09-02

申请人： Akira Idogawa ,  Nagayasu Bessho ,  Kenichi Sorimachi ,  Tetsuya Fujii ,  Toshikazu Sakuraya

发明人： Akira Idogawa ,  Nagayasu Bessho ,  Kenichi Sorimachi ,  Tetsuya Fujii ,  Toshikazu Sakuraya

IPC分类号： B22D11/11 ,  B22D27/02

CPC分类号： B22D11/11

摘要： An apparatus and method for continuous casting steel. A vertical continuous-casting mold consists of a pair of long side frames and a pair of short side frames formed of a metal having low electrical conductivity. An immersion nozzle supplies molten steel to the mold. An induction heating coil surrounded by a backup frame surrounds the vertical continuous-casting mold. The induction heating coil induction-heats the surface of the molten steel and neighboring portions thereof. The apparatus meets the following conditions;.xi..sup.2 =.sigma..sub.1 /.sigma..sub.2 .ltoreq.4 1/10.ltoreq. .eta.=(2.mu. .sub.0 .multidot..sigma..sub.2 .multidot..omega.).sup.0.5 .multidot.d.ltoreq. 10where .xi. designates the ratio of electrical conductivity of the mold and the molten steel.sigma..sub.1 designates the electrical conductivity of the mold.sigma..sub.2 designates the electrical conductivity of the molten steel.mu..sub.0 designates the permeability in a vacuumd designates the thickness of the mold.omega. designates the pulsatance of the electromagnetic wave.eta. designates the ratio of the penetration depth of the magnetic field to the molten steel to the mold thickness.

摘要翻译： 连铸钢的设备和方法。 垂直连铸铸模由一对长边框架和一对由导电性低的金属构成的短边框架构成。 浸入式喷嘴将钢水提供给模具。 由支撑框架包围的感应加热线圈围绕垂直连铸铸模。 感应加热线圈感应加热钢水的表面及其相邻部分。 仪器符合以下条件; xi 2 = sigma 1 / sigma 2

公开(公告)号：USRE32590E

公开(公告)日：1988-02-02

申请号：US922323

申请日：1986-10-23

申请人： Toshikazu Sakuraya ,  Tetsuya Fujii ,  Shigeo Matsui ,  Shigeki Hayashi

发明人： Toshikazu Sakuraya ,  Tetsuya Fujii ,  Shigeo Matsui ,  Shigeki Hayashi

IPC分类号： B01D53/04 ,  B01D53/047 ,  C01B32/40 ,  C10K1/32

CPC分类号： B01D53/0476 ,  C01B31/18 ,  C10K1/32 ,  B01D2253/102 ,  B01D2253/108 ,  B01D2256/10 ,  B01D2256/20 ,  B01D2257/102 ,  B01D2257/104 ,  B01D2257/108 ,  B01D2257/502 ,  B01D2257/504 ,  B01D2259/40001 ,  B01D2259/40015 ,  B01D2259/4003 ,  B01D2259/40037 ,  B01D2259/40064 ,  B01D2259/40066 ,  B01D2259/40069 ,  B01D2259/402 ,  B01D2259/404 ,  Y02C10/08 ,  Y02P20/152

摘要： A process for separating carbon monoxide from a feed gas .[.comprising.]. .Iadd.including .Iaddend.CO.sub.2, CO and less adsorbable component than CO through PSA by using at least two adsorption columns in two stage adsorption operation which .[.comprises.]. .Iadd.includes .Iaddend.a first adsorption stage for removing CO.sub.2 from .[.said.]. .Iadd.the .Iaddend.feed gas and a second adsorption stage for separating CO from gaseous mixture withdrawn from the first adsorption stage:(1) the first adsorption stage comprising a pressure swing adsorption repeating adsorption and desorption, and(2) the second adsorption stage comprising:(i) pressurization by the first stage product gas,(ii) adsorption,(iii) depressurization,(iv) purge by product gas,(v) evacuation for recovering product gas, and(vi) pressurization by gas withdrawn in other column, periodically switching the flow between or among .[.said.]. .Iadd.the .Iaddend.columns so as to repeat the above steps in the columns, and a process for separating carbon monoxide from a feed gas .[.comprising.]. .Iadd.including .Iaddend.carbon monoxide and less adsorbable component than CO through pressure swing adsorption by using at least two adsorption columns containing an adsorbent exhibiting selective adsorb property to carbon monoxide which .[.comprises.]..Iadd.includes.Iaddend.:(i) pressurization by feed gas,(ii) adsorption,(iii) depressurization,(iv) purge by product gas,(v) evacuation for recovering product gas, and(vi) pressurization by gas withdrawn in other column, periodically switching the flow between or among .[.said.]. .Iadd.the .Iaddend.columns so as to repeat the above steps in the columns are disclosed.

公开(公告)号：US4539020A

公开(公告)日：1985-09-03

申请号：US621789

申请日：1984-06-18

申请人： Toshikazu Sakuraya ,  Tetsuya Fujii ,  Shigeo Matsui ,  Shigeki Hayashi

发明人： Toshikazu Sakuraya ,  Tetsuya Fujii ,  Shigeo Matsui ,  Shigeki Hayashi

IPC分类号： B01D53/04 ,  C01B32/40 ,  C10K1/32

CPC分类号： B01D53/047 ,  C01B31/18 ,  C10K1/32 ,  B01D2256/20 ,  B01D2257/504 ,  B01D2259/40003 ,  B01D2259/40064 ,  B01D2259/40079 ,  B01D2259/40081 ,  B01D2259/402 ,  B01D2259/404 ,  Y02C10/08 ,  Y02P20/152

摘要： A process for separating carbon monoxide from a feed gas comprising CO.sub.2, CO and less adsorbable component than CO through PSA by using at least two adsorption columns in two stage adsorption operation which comprises a first adsorption stage for removing CO.sub.2 from said feed gas and a second adsorption stage for separating CO from gaseous mixture withdrawn from the first adsorption stage:(1) the first adsorption stage comprising a pressure swing adsorption repeating adsorption and desorption, and(2) the second adsorption stage comprising:(i) pressurization by the first stage product gas,(ii) adsorption,(iii) depressurization,(iv) purge by product gas,(v) evacuation for recovering product gas, and(vi) pressurization by gas withdrawn in other column,periodically switching the flow between or among said columns so as to repeat the above steps in the columns, and a process for separating carbon monoxide from a feed gas comprising carbon monoxide and less adsorbable component than CO through pressure swing adsorption by using at least two adsorption columns containing an adsorbent exhibiting selective adsorb property to carbon monoxide which comprises:(i) pressurization by feed gas,(ii) adsorption,(iii) depressurization,(iv) purge by product gas,(v) evacuation for recovering product gas, and(vi) pressurization by gas withdrawn in other column,periodically switching the flow between or among said columns so as to repeat the above steps in the columns are disclosed.

摘要翻译： 一种从包含CO 2，CO和较少可吸附成分的进料气体中分离一氧化碳的方法，其通过在两阶段吸附操作中使用至少两个吸附塔，通过PSA至少两个吸附塔，其包括用于从所述进料气体中除去CO 2的第一吸附阶段， 用于从第一吸附阶段排出的气体混合物中分离CO的吸附阶段：（1）第一吸附阶段包括变压吸附重复吸附和解吸，和（2）第二吸附阶段包括：（i）第一阶段加压 产品气体，（ii）吸附，（iii）减压，（iv）通过产物气体吹扫，（v）用于回收产物气体的抽空，和（vi）通过在其它塔中抽出的气体加压，周期性地切换所述 塔，以便重复列中的上述步骤，以及从包含一氧化碳和较少可吸附组分的进料气体中分离一氧化碳的方法比CO 通过使用至少两个含有对一氧化碳具有选择性吸附性质的吸附剂的吸附塔进行变压吸附，其包括：（i）通过进料气加压，（ii）吸附，（iii）减压，（iv） （v）用于回收产物气体的抽空，以及（vi）通过在其他塔中取出的气体加压，周期性地切换所述塔之间或之间的流动，以便重复上述列中的步骤。

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。

公开(公告)号：US6090361A

公开(公告)日：2000-07-18

申请号：US46172

申请日：1998-03-23

申请人： Hiroyuki Baba ,  Masamichi Abe ,  Kazuhiro Hanazawa ,  Naomichi Nakamura ,  Noriyoshi Yuge ,  Yasuhiko Sakaguchi ,  Yoshiei Kato ,  Tetsuya Fujii

发明人： Hiroyuki Baba ,  Masamichi Abe ,  Kazuhiro Hanazawa ,  Naomichi Nakamura ,  Noriyoshi Yuge ,  Yasuhiko Sakaguchi ,  Yoshiei Kato ,  Tetsuya Fujii

IPC分类号： C01B33/025 ,  C01B33/037 ,  C30B11/00 ,  C30B13/00 ,  C30B15/00 ,  C01B33/02

CPC分类号： C30B29/06 ,  C01B33/037 ,  C30B11/00 ,  C30B13/00 ,  C30B15/00

摘要： Method for producing highly purified silicon for use in solar cells by a single solidification purification, pouring silicon into a mold and gradually fractionally solidifying it while solidifying the liquid surface, followed by purifying the solidified silicon by zone melting or continuous casting using an electromagnetic mold, or by zone melting in combination with continuous casting, and optionally causing directional solidification to concentrate impurities, leaching and recycling.

摘要翻译： 用于通过单次凝固纯化生产用于太阳能电池的高纯度硅的方法，将硅浇注到模具中并在固化液体表面的同时逐渐固化，然后通过使用电磁模具的区域熔融或连续铸造纯化固化的硅， 或通过连续铸造的区域熔融，并且任选地引起定向凝固以浓缩杂质，浸出和再循环。

公开(公告)号：US4543125A

公开(公告)日：1985-09-24

申请号：US649918

申请日：1984-09-12

申请人： Fumio Sudo ,  Tetsuya Fujii ,  Yoshiei Kato ,  Sumio Yamada ,  Kanji Emoto

发明人： Fumio Sudo ,  Tetsuya Fujii ,  Yoshiei Kato ,  Sumio Yamada ,  Kanji Emoto

IPC分类号： C21C5/28 ,  C21C5/34 ,  C21C5/56 ,  C21C7/00

CPC分类号： C21C5/28 ,  C21C5/34 ,  C21C5/562 ,  C21C2007/0093 ,  Y02P10/216

摘要： A process for producing a steel in at least two converters using a great or substantial amount of an iron-bearing cold material. The iron-bearing cold material and a carbonaceous material are supplied into one of the converters under the presence of a molten iron or a preliminarily treated molten iron and are melted therein under oxygen-blowing to obtain a preliminarily treated molten iron containing a high content of carbon, and the preliminarily treated molten iron is refined in the other converter under oxygen-blowing to obtain a molten steel having the given composition.

摘要翻译： 一种使用大量或大量的含铁冷材料在至少两个转炉中生产钢的方法。 在铁水或预处理铁水的存在下，将含铁冷材料和碳质材料供给到转炉之一中，并在吹氧下熔化，得到含有高含量铁水的预处理铁水 碳，并且在另一个转炉中在吹氧的条件下将预处理的铁水精制，得到具有给定组成的钢水。