公开(公告)号：WO2018098817A1

公开(公告)日：2018-06-07

申请号：PCT/CN2016/108420

申请日：2016-12-02

Applicant: TENOVA S.P.A. ,  TENOVA INDUSTRIAL TECHNOLOGIES (BEIJING) CO., LTD.

Inventor： REALI, Silvio Maria ,  GIAVANI, Cesare ,  VIRGILI, Giuseppino ,  CATTALINI, Cristian

IPC: C21B11/10

Abstract: A metallurgical furnace (10) of the convertible type to an electric arc furnace or to a converter for conducting production processes for the production of metals in the molten state, in particular steel or cast iron, it comprises a vessel, in turn comprising a lower shell (11) for containing the metal bath, the metal bath being composed of molten metal and an overlying layer of slag, wherein the lower shell (11) is tiltingly supported and is provided with a deslagging opening (15) for evacuating the slag and with a tapping opening (16) for tapping the molten metal, and an upper shell (12) removably positioned on the lower shell (11) and provided with at least one inlet opening (17a, 17b) for feeding, through the same, charge material in the solid state or in the molten state, a closing roof (13) for the upper closing of the vessel, wherein the closing roof (13) is removably positioned on the upper shell (12) and is provided with a passage opening (18) for the passage, through the same, of at least one electrode (E) and at least one charge opening (20) for feeding, through the same, charge material in the solid state, wherein at least one of the inlet openings (17a, 17b), the passage opening (18), the charge opening (20) is closed or can be associated with a closing element of the removable type, and wherein the lower shell (11) has a diameter D and the vessel has an overall height H ranging from 0.70D to 1.25D, preferably ranging from 0.70D to 0.80D if the furnace is used as an electric arc furnace and from 0.80D to 1.25D if the furnace is used as a converter.

公开(公告)号：WO2013150421A1

公开(公告)日：2013-10-10

申请号：PCT/IB2013/052465

申请日：2013-03-27

Applicant: TENOVA S.P.A.

Inventor： REALI, Silvio Maria ,  GRIONI, Mauro ,  CAVALLINI, Giancarlo

IPC: F27D1/18 ,  F27D3/15 ,  F27D25/00

CPC classification number: F27D1/1858 ,  C21B7/14 ,  F27D3/1509 ,  F27D3/1536 ,  F27D25/001

Abstract: The present invention refers to a method and an apparatus (10) for closing the slag doorway and for cleaning the slag doorway and channel of a metallurgical furnace (100) comprising walls in which a slag doorway (107) is defined and a slag channel (108) that crosses said slag doorway (107) and has a bottom (109), in which the apparatus (10) comprises a support structure (11) associable with the furnace (100), at least one slag-breaking body that is provided with a lower border that, under mounting conditions of the apparatus (10) on the furnace (100), is directed towards the bottom (109) and at a definable height with respect to it, in which the slag-breaking body is associated with the support structure (11) in a movable manner along the slag channel (108) away from and/or towards the slag doorway (107) in order to wipe, with its lower border, the bottom (109) or a plane parallel to it and vibrating or oscillating means (25) that are associated with the slag-breaking body in order to confer it a vibrating or oscillating movement with non null component incident the bottom (109), during at least one tract of the travel performed by it during its movement away from or towards the slag doorway.

Abstract translation: 本发明涉及一种用于关闭炉渣门口并清洁冶金炉（100）的炉渣通道和通道的方法和装置（10），其包括限定炉渣通道（107）的壁和炉渣通道（ 108），其穿过所述渣口（107）并具有底部（109），其中所述装置（10）包括与所述炉（100）相关联的支撑结构（11），至少一个破渣体 具有下边界，在炉子（100）上的设备（10）的安装条件下，朝向底部（109）并且以相对于其的可定义的高度指向，其中断渣主体与 所述支撑结构（11）沿着所述炉渣通道（108）可移动地远离和/或朝向所述炉渣门口（107），以便其下部边界与底部（109）或平行于其的平面擦拭 以及与断屑体相关联的振动或振动装置（25） 使其具有在其远离或朝向炉渣门口的运动期间由其执行的至少一个行程中的非空分量入射到底部（109）的振动或振荡运动。

公开(公告)号：WO2020025227A1

公开(公告)日：2020-02-06

申请号：PCT/EP2019/067136

申请日：2019-06-27

Applicant: TENOVA S.P.A.

Inventor： LOCATELLI, Dario ,  REALI, Silvio Maria ,  ARGENTA, Paolo

IPC: G05B19/418 ,  F27D3/00 ,  F27D21/00 ,  C21C5/52

Abstract: A system and equipment tomeasure and control the feeding of load material into an electrical arc furnace(EAF) includesan automatic control device feeding the load material;a measuring device positioned between the EAF and the tilting platform that includes an upper plate adapted to slide against the EAF, a lower plate engaged to the tilting platform, and a ring structure therebetween having a peripheral ring wall, a ring plate extending across the ring structure, and a contact member coupled to the ring plate that upperly contacts the upper plate and lowerly approaches, without contacting the lower plate; and one or more sensors measuring a deformation of the ring plate upon application of a load on the upper plate.

公开(公告)号：WO2020016702A1

公开(公告)日：2020-01-23

申请号：PCT/IB2019/055830

申请日：2019-07-09

Applicant: TENOVA S.P.A.

Inventor： REALI, Silvio Maria ,  GIAVANI, Cesare

IPC: C21C5/56 ,  F27B3/18 ,  F27D13/00

Abstract: Process and plant for preheating a metal charge (11) fed in continuous to an electric melting furnace (12) through a preheating tunnel (16) provided with a horizontal conveyor (13), wherein said metal charge (11) is hit, in countercurrent, by the exhaust fumes or gas (17) leaving said electric melting furnace (12) and by jets of gas ejected through a plurality of nozzles (15) positioned on the hood of said tunnel (16) provided with side walls and said hood. Said nozzles (15) are arranged in groups interspaced with respect to each other in a longitudinal direction with respect to the tunnel, and generate a small-scale turbulence or inject small fast gas jets that can penetrate the main gas stream (17) passing through the preheating tunnel (16), and said nozzles (15) simultaneously generate a "horseshoe vortex" structure, consisting of a descending central gas flow ("downwash"), and ascending flows ("upwash") close to the side walls of the preheating tunnel (16) which allow the necessary circulation of the gases.

公开(公告)号：WO2017207472A1

公开(公告)日：2017-12-07

申请号：PCT/EP2017/062860

申请日：2017-05-29

Applicant: TENOVA S.P.A.

Inventor： MEMOLI, Francesco ,  GIAVANI, Cesare ,  REALI, Silvio Maria ,  SHOOP, Kyle James

IPC: C21B11/10 ,  C21B13/12 ,  C21C5/52 ,  C21B13/14 ,  C21C1/08 ,  C21B13/00

Abstract: A method for the production of cast iron starting from pre-reduced iron ore DRI by means of an electric arc furnace EAF, comprising the following steps: a. preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of said carbon is combined with the iron to form iron carbide Fe 3 C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. melting the DRI charge to form liquid cast iron wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace EAF subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.

Abstract translation: 通过电弧炉EAF从预还原铁矿石DRI开始生产铸铁的方法，包括以下步骤：a。 制备具有高于90％的金属化且含有超过2.8重量％的碳的预还原铁矿石DRI，其中至少80％的所述碳与铁结合以形成碳化铁Fe 3 O 3， / sub> C，b。 将预还原铁矿石DRI装入电弧炉电弧炉中，c。 熔化DRI装料以形成液态铸铁，其中所述液态铸铁具有预定的实际碳含量，至少80％重量的来自预还原铁矿石中的碳的铸铁的所述实际碳含量 DRI并且其中步骤c。 在还原性气氛中和在电弧炉电炉的熔化室中进行，该电弧炉EAF经受由在步骤c中形成的还原反应产生的气体产生的正的内部压力。

公开(公告)号：WO2021144637A1

公开(公告)日：2021-07-22

申请号：PCT/IB2020/061879

申请日：2020-12-14

Applicant: TENOVA S.P.A.

Inventor： GIAVANI, Cesare ,  REALI, Silvio Maria

IPC: C21C5/52 ,  C21C5/56 ,  F27D13/00 ,  F27D17/00 ,  F27B3/18 ,  C21C2100/06 ,  C21C5/565 ,  F27D13/002 ,  F27D7/02

Abstract: A process and plant for preheating a metal charge (11) fed in continuous to an electric melting furnace (12) through a preheating tunnel (16) provided with side walls, a vault and horizontal conveyor (13), wherein said metal charge (11) is enveloped in countercurrent by the fumes or exhaust gases (17) exiting from said electric melting furnace (12). According to said process and plant, the air intake for completing the combustion of said fumes or exhaust gases (17) is effected from the surrounding environment through openings along the preheating tunnel, preferably openings present at the interface between said preheating tunnel and said electric melting furnace, said intake being regulated by acting on suction fans and/or on said openings, on the basis of measurements revealed by temperature sensors (21) and/or composition of the outgoing gases located in the terminal part of said tunnel (16) or downstream of said part; the metal charge is enveloped by jets of gas ejected through a plurality of nozzles (15) arranged on the vault of said tunnel (16), the jets of gas injected by said nozzles (15) being non- uniformly distributed transversely on the vault of the preheating tunnel (16), with a greater concentration on the top of the vault of said tunnel (16) and the jets of gas being non- uniformly distributed longitudinally along said preheating A process and plant for preheating a metal charge (11) fed in continuous to an electric melting furnace (12) through a preheating tunnel (16) provided with side walls, a vault and horizontal conveyor (13), wherein said metal charge (11) is enveloped in countercurrent by the fumes or exhaust gases (17) exiting from said electric melting furnace (12). According to said process and plant, the air intake for completing the combustion of said fumes or exhaust gases (17) is effected from the surrounding environment through openings along the preheating tunnel, preferably openings present at the interface between said preheating tunnel and said electric melting furnace, said intake being regulated by acting on suction fans and/or on said openings, on the basis of measurements revealed by temperature sensors (21) and/or composition of the outgoing gases located in the terminal part of said tunnel (16) or downstream of said part; the metal charge is enveloped by jets of gas ejected through a plurality of nozzles (15) arranged on the vault of said tunnel (16), the jets of gas injected by said nozzles (15) being non- uniformly distributed transversely on the vault of the preheating tunnel (16), with a greater concentration on the top of the vault of said tunnel (16) and the jets of gas being non- uniformly distributed longitudinally along said preheating tunnel (16), transverse sections being provided along which said nozzles (15) are distributed, interspersed with longitudinal sections of tunnel (16) without said nozzles (15) so as to avoid interference phenomena.

公开(公告)号：WO2012017312A1

公开(公告)日：2012-02-09

申请号：PCT/IB2011/001829

申请日：2011-08-03

Applicant: TENOVA S.P.A. ,  MADDALENA, Fabio ,  CAMISANI, Luciano ,  REALI, Silvio Maria

Inventor： MADDALENA, Fabio ,  CAMISANI, Luciano ,  REALI, Silvio Maria

IPC: F27B3/24 ,  F27D1/12 ,  F27D9/00 ,  C21B7/10

CPC classification number: F27D9/00 ,  C21B7/10 ,  C21B7/20 ,  F27B3/24 ,  F27D1/12

Abstract: The present invention refers to a panel (1) cooled with a fluid, for metallurgic furnaces (F), comprising a first chamber (2) having a face (2A) which, in assembly conditions, is destined to face the interior of a metallurgic furnace (F) and the opposite face (2B) in thermal contact with a face (3A) of a second chamber (3) whose opposed face (3B) is destined to face, in assembly conditions, the external part of the metallurgic furnace (F), in which the first chamber (2) and the second chamber (3) are mutually independent and in which the first chamber (3) comprises an inlet (5) and an outlet (7) of a cooling fluid and the second chamber (3) comprises an inlet (6) and an outlet (8) of a cooling fluid, the panel (1) having a first working configuration, in which the first chamber (2) is passed by a first cooling fluid (R1) and the second chamber (3) is passed by a second cooling fluid (R2) different from the first cooling fluid, and a second working configuration, in which the first chamber (2) is passed by said second cooling fluid (R2) and the second chamber (3) is passed by said first cooling fluid (R1).

Abstract translation: 本发明涉及一种用于冶金炉（F）的用流体冷却的面板（1），包括具有面（2A）的第一室（2），所述表面（2A）在组装条件下注定要面向冶金炉 炉子（F）和与第二室（3）的表面（3A）热接触的相对面（2B），第二室（3）的相对面（3B）注定要在组装条件下面对冶金炉的外部 F），其中第一室（2）和第二室（3）彼此独立，并且其中第一室（3）包括冷却流体的入口（5）和出口（7），第二室 （3）包括冷却流体的入口（6）和出口（8），所述面板（1）具有第一工作构型，第一室（2）通过第一冷却流体（R1）和 第二室（3）通过与第一冷却流体不同的第二冷却流体（R2）和第二工作构造，其中第一室 （2）通过所述第二冷却流体（R2），第二室（3）通过所述第一冷却流体（R1）。