公开(公告)号：EP2116105A1

公开(公告)日：2009-11-11

申请号：EP08725923.0

申请日：2008-02-22

申请人： Ceramatec, Inc. ,  Hartvigsen, Joseph J. ,  Hollist, Michele ,  Elangovan, Singaravelu ,  Czernichowski, Piotr ,  Wilson, Merrill

发明人： HARTVIGSEN, Joseph J. ,  HOLLIST, Michele ,  ELANGOVAN, Singaravelu ,  CZERNICHOWSKI, Piotr ,  WILSON, Merrill

IPC分类号： H05B7/18

CPC分类号： H05B7/08

摘要： A ceramic electrode (122) for a gliding electric arc system. The ceramic electrode (122) includes a ceramic fin (200) defining a spine (202), a heel (206), and a tin (208). A discharge edge (204) of the ceramic fin (200) definces a diverging profile approximately from the heel (206) of the ceramic fin (200) to the tip (208) of the ceramic fin (200). A mounting surface (210) coupled to the ceramic fin (200) facilitates mounting the ceramic fin (200) within the gliding electric arc system. One or more ceramic electrodes (122) may be used in the gliding arc system or other systems which at least partially oxidize a combustile material.

公开(公告)号：EP1413174A4

公开(公告)日：2006-05-17

申请号：EP02746939

申请日：2002-07-10

申请人： PROCESS TECHNOLOGY INTERNATION

发明人： SHVER VALERY G

IPC分类号： A61K9/20 ,  C21C5/52 ,  A61K38/00 ,  A61K38/43 ,  A61K38/49 ,  A61K38/57 ,  A61K45/00 ,  A61P7/02 ,  C07K7/06 ,  C21C5/46 ,  F27B3/20 ,  F27B3/22 ,  F27D1/12 ,  F27D9/00 ,  F27D99/00 ,  H05B7/18 ,  H05B7/22

CPC分类号： F27D9/00 ,  C21C5/462 ,  C21C5/5217 ,  C21C2005/4626 ,  F27B3/205 ,  F27B3/225 ,  F27D1/12 ,  F27D2009/0045 ,  H05B7/185 ,  Y02P10/216

摘要： A mounting enclosure (14) and an improved mounting arrangement for apparatus used in metal melting, refining and processing, particularly those apparatus adapted for steel making in an electric arc furnace (15), such as burners (10), lances and the like with supersonic oxygen lancing capability and injectors or the like for the introduction of particulate matter. The mounting enclosure (14) is fluid cooled to survive the hostile environment of the electric arc furnace (15) and is designed to occupy the step (24) between the side wall (12) and hearth (21) of the furnace (15) without any substantial change to the structure of the furnace (15). The mounting enclosure(14) comprises a plurality of fluid cooling conduits surrounding an apparatus aperture and an injector aperture which are formed through the enclosure (14) and adapted to mount an apparatus and an injector. The mounting arrangement includes utilizing the mounting enclosure (14) to mount an apparatus (10) with supersonic oxidizing gas lancing capability and an injector for particulate carbon in an electric arc furnace (15). Because the mounting enclosure (14) is approximately the width of the step (24), the discharge openings of the apparatus (10) and the injector are moved closer to the surface of the melt (18) and toward the center of the furnace (15) thereby providing increased efficiency. The discharge openings will now be extended to near the edge of the step (24) so that the oxidizing gas flow pattern of the apparatus (10) does not degrade the hearth material or other carbon flow pattern of the injector furnace equipment mounted nearby and the sufficiently agitates the slag (16) to produce foaming.

公开(公告)号：EP1269796A4

公开(公告)日：2004-11-24

申请号：EP01920522

申请日：2001-03-19

申请人： SPECIALTY MINERALS MICHIGAN

发明人： STENDERA JAMES ,  VIERS DAVID ,  DUCHNAK MARK

IPC分类号： H05B7/18 ,  C21B13/12 ,  C21C5/52 ,  C21C5/54 ,  F27B3/08 ,  F27B3/28 ,  F27D3/18 ,  F27D19/00 ,  H05B11/00 ,  F27D17/00

CPC分类号： F27B3/28 ,  C21C5/5217 ,  C21C5/5294 ,  C21C5/54 ,  F27B3/085 ,  F27D3/18 ,  F27D2019/0075 ,  Y02P10/216

摘要： A metal alloy such as steel is manufactured in an electric arc furnace system equipped with at least one sensor (20), at least one controller (24) comprising a logic program, and a variable valve (18) in fluid communication with an electric arc furnace (10) and a charged material source (16). The nature and quality of a slag formed over a molten metal in the furnace (10) is dynamically controlled by continuously adjusting the addition of one or more materials to be added to the furnace through the variable valve (18). The slag is foamed during the steelmaking process by injecting carbon into the arc furnace continuously and variable over a flow rate of about 25 lbs/min to about 200 lbs/min.

公开(公告)号：EP1369191A4

公开(公告)日：2004-07-14

申请号：EP02712366

申请日：2002-02-14

申请人： NIPPON STEEL CORP

发明人： FUKUNAGA SHINICHI ,  NISHIHARA RYOJI ,  TANAKA KAZUHISA ,  ASANO MITSUJI ,  YASUMITSU KAZUNORI ,  HIRAMOTO YUJI ,  MITAKE HIROYUKI ,  KAWACHI TAKESHI

IPC分类号： B22D11/11 ,  B22D41/015 ,  H05B7/00 ,  H05H1/28 ,  H05H1/34 ,  H05H1/48 ,  B22D11/10 ,  B22D41/01 ,  H05B7/18

CPC分类号： H05H1/34 ,  B22D11/11 ,  B22D41/015 ,  H05B7/00 ,  H05H1/28 ,  H05H1/48 ,  H05H2001/3436 ,  H05H2001/3457 ,  H05H2001/3478

摘要： A plasma torch (20a) for heating molten steel, comprising an outer tube (26) of an annular bottomed double tube (21), and a tubular bottomed anode electrode (28) fixed to the inside of the outer tube (26) through a gap from the inside of the double tube (21), wherein the anode electrode (28) is made of a material having a softening temperature higher than 150 DEG C except for pure copper, and the ratio of electric conductivity D of the anode electrode (28) to electric conductivity N of the outer tube (26) satisfies a relation 0.2

公开(公告)号：EP1369191A1

公开(公告)日：2003-12-10

申请号：EP02712366.0

申请日：2002-02-14

申请人： NIPPON STEEL CORPORATION

发明人： FUKUNAGA, Shinichi, NIPPON STEEL CORP.YAWATA WORKS ,  NISHIHARA, Ryoji, NIPPON STEEL CORP.YAWAMATA WORKS ,  TANAKA, Kazuhisa, NIPPON STEEL CORP.YAWAMATA WORKS ,  ASANO, Mitsuji, NIPPON STEEL CORP.YAWAMATA WORKS ,  YASUMITSU, Kazunori, NIPPON STEEL CORP.YAWATA WORK ,  HIRAMOTO, Yuji, NIPPON STEEL CORP.YAWATA WORKS ,  MITAKE, Hiroyuki, NIPPON STEEL CORP.Technical Dev. ,  KAWACHI, Takeshi, NIPPON STEEL CORP.Technical Dev.

IPC分类号： B22D11/10 ,  B22D41/01 ,  H05H1/34 ,  H05B7/18

CPC分类号： H05H1/34 ,  B22D11/11 ,  B22D41/015 ,  H05B7/00 ,  H05H1/28 ,  H05H1/48 ,  H05H2001/3436 ,  H05H2001/3457 ,  H05H2001/3478

摘要： A plasma torch 20a used for heating a molten steel has an outer cylinder 26 composed of a double tube 21, the bottom of which is blocked annularly, and a bottomed cylindrical anode electrodes 28 that is installed within the outer cylinder 26 with a gap existing between the anode electrode 28 and the inside of the double tube 21, the plasma torch being characterized in that pure copper is not used as a material for the anode electrode 28, the material has a softening point exceeding 150°C, and the ratio of an electric conductivity D of the anode electrode 28 to an electric conductivity N of the outer cylinder 26 satisfies the formula: 0.2 ≤ D/N

摘要翻译： 用于加热钢水的等离子体炬20a具有由双层管21构成的外筒26，双层管21的底部被环状地封闭，并且底筒的圆柱形阳极电极28安装在外筒26之间， 阳极电极28和双管21的内部，等离子体焰炬的特征在于，纯铜不用作阳极电极28的材料，该材料具有超过150℃的软化点， 阳极电极28的电导率D与外筒26的电导率N满足公式：0.2≤D/ N <1.0。 等离子体焰炬可以防止溅射引起的阳极电极的熔化损耗和磨损以及阳极电极产生的热量，抑制侧弧产生，延长寿命，稳定铸造操作，提高板坯质量 。

公开(公告)号：EP1154678A1

公开(公告)日：2001-11-14

申请号：EP00981694.3

申请日：2000-12-13

申请人： NIPPON STEEL CORPORATION

发明人： KAWACHI, Takeshi ,  YAMAMURA, Kazuto ,  MITAKE, Hiroyuki ,  KINOSHITA, Junichi ,  IMANAGA, Katsuhiro ,  DOKI, Masahiro ,  KIMURA, Yoshiaki ,  KAWABATA, Teruo

IPC分类号： H05H1/26 ,  B22D11/10 ,  H05B7/18

CPC分类号： B22D11/11 ,  B22D41/015 ,  H05B7/00 ,  H05B7/185 ,  H05H1/28 ,  H05H1/34 ,  H05H1/40 ,  H05H2001/3421 ,  H05H2001/3478

摘要： (57) Abstract: An anode for transfer plasma heating in which a DC current is applied to melted metal in a vessel to produce an Ar plasma and heat the melted metal is characterized in that it comprises an anode which has an internal water-cooling structure and is madc of conductive metal, a metallic protective element which is placed outside the anode with a certain gap therebetween and has an internal water-cooling structure, and a gas supply means for supplying an Ar-containing gas into the gap between the anode and the protective element, and the central part of the outer surface of the tip of the anode is recessed.

公开(公告)号：EP0919111A4

公开(公告)日：2000-04-19

申请号：EP97927730

申请日：1997-05-13

申请人： LOCKHED MARTIN ADVANCED ENVIRO

发明人： SCHLIENGER MAX P

IPC分类号： H05B7/18 ,  B22D43/00 ,  C22B4/00 ,  C22B9/02 ,  F27D3/15 ,  F27D9/00 ,  F27D11/08 ,  F27D15/00 ,  H05B7/00 ,  C22B7/04 ,  F27D3/00 ,  H05B7/02

CPC分类号： B22D43/008 ,  C22B4/005 ,  C22B9/02 ,  F27D3/1572 ,  F27D9/00 ,  Y02P10/234

摘要： Slag from a pool of molten slag (34) floating on molten metal in a plasma arc treatment chamber (36) is removed by providing a slag container (38) located inside the chamber which has a slag intake pipe (40) extending from a bottom of the container (38) downwardly into the slag pool. A vacuum line (48) is connected to the top of the container and a vacuum source (46). When a vacuum is applied to the inside of the container, the pressure prevailing in the chamber pushes the slag from the pool through the intake pipe into the container. When the container becomes filled with molten slag, the latter enters a section (44) of the line communicating the top of the container with the vacuum source. As the slag enters the pipe section, it is cooled and solidified to prevent further slag flow into or gas/air flow through the vacuum line so that the container can be lifted out of the chamber while the slag in the container is still in its molten state without causing slag spillage.

摘要翻译： 从熔渣浮在等离子体弧处理室的熔融金属池熔渣是通过提供位于其中有一个炉渣吸气管从容器的底部延伸向下进入渣池的腔室内部的渣容器中移除。 将真空管连接于容器的顶部和一个真空源。 当真空施加到容器的内部，该压力在腔室盛行推动通过所述进气管中的池到容器的炉渣。 当容器变得充满熔融炉渣，后者进入通信与真空源的容器的顶部的线的一部分。 由于炉渣进入管段，它被冷却并固化，以防止进一步的熔渣流入或气体（空气）流过真空管线也是如此，而在容器中的熔渣中被停止的容器能够被提升离开所述腔室的其 熔融状态而不引起炉渣溢出。

公开(公告)号：EP0484704B1

公开(公告)日：1994-07-20

申请号：EP91117606.3

申请日：1991-10-16

申请人： BALZERS AKTIENGESELLSCHAFT

发明人： Kaufmann, Helmut, Dr. ,  Schmid, Roland, Dr.

IPC分类号： C23C14/30 ,  H01J37/305 ,  H05B7/18

CPC分类号： H01J37/32055 ,  C23C14/541 ,  H01J37/32623 ,  H01J37/3266 ,  H01J2237/332 ,  H05B7/00

公开(公告)号：EP0475576A1

公开(公告)日：1992-03-18

申请号：EP91307176.7

申请日：1991-08-05

申请人： DOW CORNING CORPORATION

发明人： Arvidson, Arvid Neil ,  Dosaj, Vishu Dutt ,  May, James Barratt

IPC分类号： C01B33/02 ,  H05B7/18

CPC分类号： C22B4/00 ,  C01B33/025

摘要： The instant invention is a process for preparing silicon metal in a direct current, submerged-arc furnace. The process comprises adding a source of silicon dioxide and a source of carbon to a substantially closed furnace. Heat is provided to the furnace by striking a direct current arc between a moveable cathode and a anode functional hearth. Silicon metal is tapped from the furnace. The described process may also be used to prepare silicon metal alloys.

摘要翻译： 本发明是在直流，埋弧电弧炉中制备硅金属的方法。 该方法包括将二氧化硅源和碳源添加到基本上封闭的炉中。 通过在可移动阴极和阳极功能性炉床之间冲击直流电弧将热量提供给炉。 从炉子中抽出硅金属。 所述方法也可用于制备硅金属合金。

公开(公告)号：EP0190313B1

公开(公告)日：1990-05-16

申请号：EP85904175.8

申请日：1985-07-30

申请人： INTERSTEEL TECHNOLOGY, INC.

发明人： VALLOMY, John, A.

IPC分类号： C21C7/00 ,  H05B7/18

CPC分类号： F27D13/002 ,  C21C5/567 ,  F27B3/065 ,  F27B3/183 ,  F27B3/19 ,  F27D17/003

摘要： Method and apparatus for the continuous making of steel in an electric steelmaking furnace (10), having a charge material preheater (18), continuous charging means (44) and means for removing refined steel (80) without removing the furnace electrodes (12) from operation, wherein charging and tapping are accomplished while maintaining full electric power, and allowing for good control over both product quality and product chemistry.