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1. 发明专利

MX9500226A METODO PARA HACER ACERO CON ALTO CONTENIDO DE NITROGENO. 未知
公开(公告)号：MX9500226A
公开(公告)日：1997-04-30
申请号：MX9500226
申请日：1995-01-02
申请人： LTV STEEL CO INC
发明人： WATKINS RICHARD R , BLOSSEY ROBERT , WOTELL GREGORY
IPC分类号： C21C7/00 , C21C5/32 , C21C7/068 , C21C7/072 , C21C7/10 , C21C07/10
摘要： La presente invencion se refiere a un método para hacer acero con alto contenido de nitrogeno a partir de una carga que comprende una cantidad de metal ferroso fundido, dicho método comprendiendo: a) soplar oxígeno gaseoso en el metal ferroso fundido para reducir el contenido de carbono de dicho metal ferroso; b) soplar una primera proporcion de nitrogeno gaseoso en dicho metal fundido; c) introducir por lo menos una porcion de dicho metal fundido en un ambiente de baja presion para reducir adicionalmente el contenido de carbono de dicho metal y, mientras está ahí; d) introducir una segunda proporcion de nitrogeno gaseoso en el metal fundido.

2. 发明公开

EP0209211A3 Lance supporting device for a vacuum degassing vessel 失效
标题翻译：用于真空脱水容器的LANCE支撑装置
公开(公告)号：EP0209211A3
公开(公告)日：1987-05-20
申请号：EP86302229
申请日：1986-03-26
申请人： NIPPON STEEL CORPORATION
发明人： Kudou, Takenori c/o Oita Factory
IPC分类号： C21C07/10 , C21C05/46
CPC分类号： C21C7/10 , C21C5/4613
摘要： A lance supporting device has a lance turntable rotatable within a plane and carrying a plurality of lance operation units each supporting a lance for inserting a gas and/or a powdered treating agent into a molten metal. Each lance operation unit has means for lifting/lowering, rotating and tilting the lance. The lance turntable carrying the plurality of lance operation units is disposed in the central hollow or cavity of a doughnut-shaped turntable which carries a plurality of vacuum degassing vessels.

3. 发明公开

EP0151872A3 Vacuum treating steels 失效
标题翻译：真空处理钢
公开(公告)号：EP0151872A3
公开(公告)日：1986-06-25
申请号：EP84308261
申请日：1984-11-28
申请人： J. Mulcahy Enterprises Incorporated
发明人： Mulcahy, Joseph
IPC分类号： C21C07/10
CPC分类号： C21C7/10 , C22B9/04
摘要： Molten steel or other electroconductive metal is treated with vacuum to remove dissolved gases therefrom. A rod (28) of molten steel is drawn from a bath (14) by applying vacuum to a vertical tube (22) dipping into the molten bath (14). An electrical coil (26) surrounding the tube (22) applies an intense magnetic field to the steel rod by the passage of high frequency alternating current through the coil (26). The rod (28) is compressed radially inwardly by the magnetic field exposing the whole of the external surface of the rod (28) to vacuum. At the same time, the induced eddy currents superheat the steel rod. The large surface area of application of vacuum combined with the narrow dimension through which the gas must travel ensure rapid and efficient removal of the gases. The procedure is repeated until all the steel in the bath has been treated. Lack of contact of the steel rod (28) with the tube surface eliminates loss of heat by convection and the superheating of the steel rod by the eddy currents ensures that the overall heat losses are minimal during processing of the molten metal bath.

4. 发明公开

EP0178480A3 Method and apparatus for controlled melt refining 失效
标题翻译：用于控制熔融精炼的方法和装置
公开(公告)号：EP0178480A3
公开(公告)日：1988-04-06
申请号：EP85111820
申请日：1985-09-18
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Yamada, Katsuhiko c/o Itami Works of
IPC分类号： C21C07/10
CPC分类号： C21C7/10 , C21C7/00
摘要： A controlled melt refining method is provided that ensures rapid and consistent refining by controlling the gas holdup (3H H), as an index for the intensity of boiling, at a predetermined value in the range of 0.1-0.5. The method comprises (a) covering the surface of a semi-killed molten steel in a ladle with a basic slag which either is non-oxidizing or contains not more than 5% of FeO; (b) maintaining the pressure of the atmosphere above the melt in the range of 30-150 Torr; (c) blowing an inert gas into the ladle from the bottom; and (d) maintaining the height of the boiling melt in terms of gas holdup (ΔH'H) within the range of 0.1-0.5 by controlling the pressure at which the inert gas is blown and or by adjusting a vacuum exhaust valve, ΔH being the difference in height between the surface of the boiling melt and a quiet melt, and H being the height of the quite melt. The present invention also comprises an apparatus for refining molten steel in accordance with the above method.

5. 发明公开

EP0137315A3 Process and apparatus for the manufacture of high-purity alloys 无效
标题翻译：高纯合金的制造工艺及装置
公开(公告)号：EP0137315A3
公开(公告)日：1985-08-21
申请号：EP84110654
申请日：1984-09-07
申请人： Fried. Krupp Gesellschaft mit beschränkter Haftung
发明人： Hartwig, Jürgen, Dr.-Ing. , Jachowski, Johannes , Pant, Paul, Dipl.-Ing.
IPC分类号： C21C05/52 , C21C07/10 , B22D27/15
CPC分类号： B22D27/15

6. 发明申请

WO1997047775A1 BLOWPIPE FOR DEGASSING PLANTS 审中-公开
标题翻译： TRUNK进行脱气
公开(公告)号：WO1997047775A1
公开(公告)日：1997-12-18
申请号：PCT/EP1997002543
申请日：1997-05-17
申请人： VEITSCH-RADEX AKTIENGESELLSCHAFT FÜR FEUERFESTE ERZEUGNISSE , LOOP, Peter , REITERER, Alfred
发明人： VEITSCH-RADEX AKTIENGESELLSCHAFT FÜR FEUERFESTE ERZEUGNISSE
IPC分类号： C21C07/10
CPC分类号： C04B35/047 , C21C7/10
摘要： The invention relates to a blowpipe for degassing plants for the vacuum treatment of metallurgical melts, especially raw steel. The blowpipe consists of a cylinder (12) of boiler sheet steel coated on its outer (12a), inner (12i) and lower (12u) faces with a monolithic ceramic fireproof material (14). Said fireproof coating consists of a magnesite-chromium compound.
摘要翻译：本发明涉及一种中继脱气的真空处理冶金熔化，特别是粗钢的。主干是由具有在其外表（12a）的一锅炉钢筒（12），内（12 1）的，和下端面侧（12U）涂覆有单片陶瓷耐火材料（14）。这种耐火衬里由菱镁矿 - 铬组成的。

7. 发明申请

WO1997019197A1 METHOD AND DEVICE FOR DECARBURIZING STEELS MELTS 审中-公开
标题翻译：方法和设备的融化脱碳钢板
公开(公告)号：WO1997019197A1
公开(公告)日：1997-05-29
申请号：PCT/DE1996002165
申请日：1996-11-06
申请人： MANNESMANN AG , SCHÖLER, Horst-Dieter , WIEGMANN, Volker , DITTRICH, Rainer , HAERS, Frank , PEETERS, Leo
发明人： MANNESMANN AG
IPC分类号： C21C07/10
CPC分类号： C21C7/10
摘要： The invention concerns a method of decarburizing steel melts in a closed metallurgical vessel connected to a vacumm pump and into which oxygen can be supplied by means of a lance and combustible materials by means of a feed device. The method calls for the following steps: a) the melt is poured into the vessel, the pressure reduced continously to less than 100 mbar and oxygen blown in in order to burn off the carbon, the oxygen being blown in in predefined excess, in addition to the supplementary oxygen used during the decarburization phase; b) at the moment when the oxygen is in partial excess, metallic combustion material is supplied, distributed uniformly throughout the melt. The invention also concerns a device which includes sensors (21 and 29), located in the closable vessel, for the measurement of the melt temperature (T) and pressure (P), respectively, and which are connected via a measurement and control unit (22) to control elements (23, 25) for supplying oxygen (O2) and metallic combustion materials (A).
摘要翻译：本发明涉及一种用于钢的脱碳在一个封闭的冶金容器，它连接到一个真空系统和可燃物质通过喷枪氧，以及一个进给装置引入熔化。这里，下面的步骤被执行：1）引入熔融的和连续减少低于100毫巴至脱碳用于进行碳烧掉补充氧气期间采用的压力的除被注入后，过量的氧的可预先确定的量; b）在部分Sauerstoffüberberschusses金属燃料的时间被添加均匀地分布。此外，本发明涉及一种设备，其特征在于，有在所述可密封的容器的测量元件（21和29），用于通过测量和控制装置检测到所述熔融温度（T和压力P）提供（22），其具有控制部件（23，25）用于供应氧气（O 2）和金属燃料（A）被连接。

8. 发明申请

WO1995020057A1 PROCESS FOR THE VACUUM REFINING OF METAL AND ASSOCIATED DEVICE 审中-公开
标题翻译：金属和相关器件的真空精炼工艺
公开(公告)号：WO1995020057A1
公开(公告)日：1995-07-27
申请号：PCT/RU1994000034
申请日：1994-02-24
申请人： AKTSIONERNOE OBSCHESTVO "e;NIZHNETAGILSKY METALLURGICHESKY KOMBINAT"e; , MEZHVUZOVSKY INZHENERNY TSENTR "e;STRUIMETTEKHNOLOGIA"e; , KOMRATOV, Jury Sergeevich , KIRICHKOV, Anatoly Alexandrovich , NOVOLODSKY, Viktor Pavlovich , TRETYAKOV, Mikhail Andreevich , BURLAKA, Gennady Viktorovich , SPIRIN, Viktor Andreevich , FETISOV, Alexandr Arkhipovich , ALEXANDROV, Vladimir Borisovich , ZHIGACH, Stanislav Ivanovich , SIZOV, Anatoly Mikhailovich , NIKOLSKY, Vladimir Evgenievich , KABLUKA, Valery Vladimirovich , SAVIN, Andrei Valerievich
发明人： AKTSIONERNOE OBSCHESTVO "e;NIZHNETAGILSKY METALLURGICHESKY KOMBINAT"e; , MEZHVUZOVSKY INZHENERNY TSENTR "e;STRUIMETTEKHNOLOGIA"e;
IPC分类号： C21C07/10
CPC分类号： C21C7/10 , C22B9/04
摘要： A process for the vacuum refining of metal involves lowering the pressure of the gas mixture on the surface of the metal melt until the partial pressures of the gases above the melt are lower than the partial pressures of the gases within it; and subjecting the metal to pressure pulses of 0.02-0.08 MPa in the low-frequency range 0.03-5 Hz while also simultaneously altering the pressure in the medium-frequency range 55-195 Hz from 0.005 to 0.01 MPa, and in the high-frequency range 350-3500 Hz from 0.0001 to 0.001 MPa. To that end, the proposed device for the vacuum refining of metal by the process described above comprises: an airtight chamber (1) with a gas outlet pipe (2); an ejector (3) comprising a housing (4), a nozzle (5) and a mixer channel (6); a unit (7) for creating low-frequency pulses in the working gas flowing through the nozzle (5) of the ejector (3); a unit (8) for creating medium-frequency pulses in the gas flow at the inlet to the gas outlet pipe (2); and a unit (10) for creating high-frequency pulses in the gas flow leaving the chamber (1), the latter being designed as a regulator for, in the present case, the flow-through section of the nozzle (5) which forms an insert (20).
摘要翻译：用于真空精炼金属的方法包括降低金属熔体表面上的气体混合物的压力，直到熔体上方的气体的分压低于其内的气体的分压; 并在0.03-5Hz的低频范围内对金属进行0.02-0.08MPa的压力脉冲，同时将55-195Hz的中频范围的压力从0.005变化到0.01MPa，在高频范围为350-3500Hz，从0.0001到0.001MPa。为此，所提出的通过上述方法真空精炼金属的装置包括：具有气体出口管（2）的气密室（1）; 喷射器（3），包括壳体（4），喷嘴（5）和混合器通道（6）; 用于在流过喷射器（3）的喷嘴（5）的工作气体中产生低频脉冲的单元（7）; 用于在气体出口管（2）的入口处的气流中产生中频脉冲的单元（8）; 以及用于在离开所述腔室（1）的气流中产生高频脉冲的单元（10），后者被设计为用于在当前情况下形成喷嘴（5）的流通部分的调节器插入件（20）。

9. 发明申请

WO1992001818A1 VACUUM PROCESSING OF REACTIVE METAL 审中-公开
标题翻译：真空金属的真空处理
公开(公告)号：WO1992001818A1
公开(公告)日：1992-02-06
申请号：PCT/US1991003951
申请日：1991-06-05
申请人： AXEL JOHNSON METALS, INC.
发明人： AXEL JOHNSON METALS, INC. , HARKER, Howard, R.
IPC分类号： C21C07/10
CPC分类号： F27D99/0006 , C22B9/22 , F27B3/10 , F27B3/18 , F27D2099/003
摘要： In the particular embodiments described in the specification, a vacuum furnace includes a conveying arrangement for holding four solid metal members (16, 22) with their end faces (18) in closely-spaced relation and an energy beam gun (11) directs energy (12) to the adjacent faces to melt the metal. Metal (20) ejected from the heated surfaces by explosive vaporization of inclusions in the metal is trapped by the adjacent surfaces of the other metal members.

10. 发明申请

WO1998029575A1 METHOD FOR VACUUM/REDUCED-PRESSURE REFINING AND FACILITY FOR VACUUM/REDUCED-PRESSURE REFINING 审中-公开
标题翻译：用于真空/降低压力精炼的真空/降低压力精炼方法
公开(公告)号：WO1998029575A1
公开(公告)日：1998-07-09
申请号：PCT/JP1997004823
申请日：1997-12-25
申请人： NIPPON STEEL CORPORATION , SHIMOMURA, Kensuke , SADACHIKA, Masaru , TAKANO, Hironori , OGAWA, Gaku , ABE, Kenji , OKIMORI, Mayumi , MAKINO, Nobuyuki , IWASAKI, Hiroshi , TANAKA, Tomoaki , MORISHIGE, Hiroaki
发明人： NIPPON STEEL CORPORATION
IPC分类号： C21C07/10
CPC分类号： C21C7/10 , C21C5/28
摘要： Problem: dust collection in a vacuum/reduced-pressure refining process is conducted using an inexpensive filter without causing damage on and burn of the filter. Solving means: a vacuum/reduced-pressure refining vessel (1), a dry type dust collector (3) using a filter (2) and a reduced-pressure exhaust device (4) are connected sequentially by an upstream-side duct (5) and a downstream-side duct (6), and a gate valve (7) is provided to the upstream-side duct (5). At the time of starting the vaccum/reduced-pressure refining process, non-oxidizing gas is fed into the upstream side of the gate valve (7) and oxygen on the upstream side is replaced thereby substantially. Thereafter, the upstream side is closed gastightly, the gate valve (7) is opened after the closed state on the upstream side is accomplished, and the dust collector (3) is operated. It is preferable that after the vacuum/reduced-pressure refining process the gate valve (7) is closed, only the non-oxidizing gas is fed into the upstream side of the valve to recover the pressure, and then the vessel is opened to the atmosphere, and it is also preferable that after the vacuum/reduced-pressure refining process, an opening part on the duct collector (3) side is closed during the standby till the subsequent vacuum/reduced-pressure refining process is started.
摘要翻译：问题：使用便宜的过滤器进行真空/减压精炼过程中的灰尘收集，而不会损坏和燃烧过滤器。解决方法：使用过滤器（2）和减压排气装置（4）的真空/减压精炼容器（1），干式集尘器（3），依次由上游侧管道（5））和下游侧管道（6），并且闸门（7）设置在上游侧管道（5）上。在开始真空/减压精炼过程时，非氧化性气体被进料到闸阀（7）的上游侧，并且上游侧的氧气基本上被替换。此后，上游侧气密地关闭，在上游侧的关闭状态完成之后，闸阀（7）打开，并且集尘器（3）被操作。优选的是，在真空/减压精炼处理之后，闸阀（7）关闭，只有非氧化气体被供给到阀的上游侧以回收压力，然后将容器打开至气氛中，优选在真空/减压精制处理之后，在待机状态下，在收集器（3）侧的开口部分被关闭，直到开始后续的真空/减压精制处理。

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