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公开(公告)号：US5375648A
公开(公告)日：1994-12-27
申请号：US116138
申请日：1993-09-02
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
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2.发明授权
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.
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3.发明授权Method of and apparatus for removing non-metallic inclusions from molten metal 失效用于从金属金属中去除非金属包合物的方法和装置
公开(公告)号：US5071471A
公开(公告)日：1991-12-10
申请号：US581688
申请日：1990-09-13
IPC分类号： B22D11/10 , B22D11/115 , B22D41/01 , B22D43/00 , C22B9/02
CPC分类号： C22B9/02 , Y02P10/234
摘要： A method of removing non-metallic inclusions from a molten metal comprises the step of simultaneously applying both a horizontal rotation of the molten metal and heating of the molten metal by induction heating. After the simultaneous application of rotational force and heat, the induction heating may be stopped while the horizontal flow of the molten metal is maintained, so as to promote the separation of the particles of the inclusions. The method is carried out by using an apparatus which has a vessel which contains the molten metal, a rotary magnetic field generating device surrounding the vessel, and an induction heating device also surrounding the vessel. Each of the rotary magnetic field generating device and the induction heating device may be divided into a plurality of circumferential segments and arranged such that the segments of both devices are alternately disposed around the vessel.
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公开(公告)号：US5356454A
公开(公告)日：1994-10-18
申请号：US98139
申请日：1993-07-28
申请人： Seiji Itoyama , Hidenari Kitaoka , Toshikazu Sakuraya , Kenichi Sorimachi , Saburo Moriwaki , Sumio Yamada , Chikashi Tada , Takahiro Mitumune , Shinichi Kaneko , Masafumi Maeda
发明人： Seiji Itoyama , Hidenari Kitaoka , Toshikazu Sakuraya , Kenichi Sorimachi , Saburo Moriwaki , Sumio Yamada , Chikashi Tada , Takahiro Mitumune , Shinichi Kaneko , Masafumi Maeda
IPC分类号： B22D11/111 , C21C7/076 , B22C1/00
CPC分类号： B22D11/111
摘要： A mold powder for use in continuous casting, containing specified amounts of CaO, Al.sub.2 O.sub.3, TiO.sub.2, Li.sub.2 O, BaO, MgO, F and Na.sub.2 O, and further containing at least one of BN and C as aggregate. The mold powder, when used in continuous casting of a steel rich in strong reducing metal elements such as Al, Ti, REM and so forth, remarkably suppresses generation of deterioration in the surface quality of the slab and break out of the slab which are attributable inferior lubrication.
摘要翻译： 一种用于连续铸造的模具粉末，含有规定量的CaO，Al 2 O 3，TiO 2，Li 2 O，BaO，MgO，F和Na 2 O，并且还含有BN和C中的至少一种作为骨料。 模具粉末，当用于连续铸造富含强还原性金属元素如Al，Ti，REM等的钢时，显着地抑制了板坯的表面质量的劣化和由于 润滑不良
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公开(公告)号：US5083687A
公开(公告)日：1992-01-28
申请号：US598040
申请日：1990-10-16
IPC分类号： B22D41/54 , C04B35/583 , C04B35/66
CPC分类号： C04B35/6303 , B22D41/54 , C04B35/583 , C04B35/66 , C04B2235/3244 , C04B2235/3821 , C04B2235/3826 , C04B2235/386
摘要： A nozzle for use in continuous casting comprising an inner surface region defining the nozzle port for passing a molten steel, said inner surface region being formed from a mixture having a composition containing 50 to 80 wt % of boron nitride (BN) and 20 to 50 wt % of zirconium oxide (ZrO.sub.2), and a sintering assistant composed of silicon carbide (SiC) and boron carbide (B.sub.4 C) mixed at a weight ratio of 1:1, the sintering assistant being added in amount of 5 to 10 wt parts to 100 wt parts of said mixture. The nozzle is produced by a process comprising the steps of: forming a uniform mixture of fine particles of boron nitride (BN), zirconium oxide (ZrO.sub.2), silicon carbide (SiC) and boron carbide (B.sub.4 C); forming the mixture into a cylindrical blank; and fixing the cylindrical blank in the bore of a nozzle member by means of a joint filling material.
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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
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。
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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
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。
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公开(公告)号：USRE32590E
公开(公告)日：1988-02-02
申请号：US922323
申请日：1986-10-23
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.
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公开(公告)号：US4539020A
公开(公告)日：1985-09-03
申请号：US621789
申请日：1984-06-18
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。
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公开(公告)号：US4436287A
公开(公告)日：1984-03-13
申请号：US511511
申请日：1983-07-06
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。
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