公开(公告)号：US5802097A

公开(公告)日：1998-09-01

申请号：US583727

申请日：1996-01-17

申请人： Gianni Gensini ,  Matteo Losciale ,  Corrado De Cecco

发明人： Gianni Gensini ,  Matteo Losciale ,  Corrado De Cecco

IPC分类号： C21C5/52 ,  F27B3/20 ,  F27B3/22 ,  F27D1/00

CPC分类号： F27B3/225 ,  C21C5/5217 ,  F27B3/205 ,  Y02P10/216

摘要： Melting method for an electric arc furnace with alternative sources of energy for the melting of iron-based alloys, the electric furnace (10) including tuyeres (13) positioned on the bottom to deliver oxygen, at least one tuyere (15) to deliver coal dust which works in the area of contact between the bath of molten metal (16) and the layer of slag (22), at least one supersonic lance (12) cooperating with a lance (29) to deliver coal dust, these lances (12, 29) having a working position (12c, 29c) in which the supersonic lance (12) is positioned in close proximity to the surface of the molten metal (16) and the lance (29) to deliver coal dust is positioned in the vicinity of the surface of the layer of slag (22), and a plurality of burners (28) positioned on the cooled sidewalls (31) of the furnace (10) and delivering oxygen-based gases and combustible substances, whereby at least two first burners (28) work with the action of one burner supporting the action of the next one, the furnace (10) being charged with one or more charges which provide for a first step of start-up of the melting and a second step of melting, a refining step and a tapping step being included, in which method in the first step of start-up of the melting at least one second burner (28e) collaborates in freeing quickly the path of introduction of the supersonic lance (12) and of the lance (29) to deliver coal dust.

摘要翻译： 一种具有用于铁基合金熔化的替代能源的电弧炉的熔化方法，所述电炉（10）包括位于底部以输送氧的风口（13），至少一个风口（15）以输送煤 在熔融金属（16）的熔池与炉渣（22）之间的接触区域中工作的灰尘，至少一个与喷枪（29）配合以输送煤尘的超音速喷枪（12），这些喷枪 ，29），其中超音速喷枪（12）位于靠近熔融金属（16）表面的工作位置（12c，29c）上，并且用于输送煤尘的喷枪（29）位于附近 （22）的表面的多个燃烧器（28）和位于炉（10）的冷却的侧壁（31）上的多个燃烧器（28），并且输送氧气和可燃物质，由此至少两个第一燃烧器 （28）在一个燃烧器的作用下工作，支持下一个燃烧器的动作 e（10）被带有一个或多个电荷，其提供熔化启动的第一步骤和熔化的第二步骤，包括精炼步骤和攻丝步骤，其中在第一步骤中开始的方法 熔化的至少一个第二燃烧器（28e）的协同作用可以快速释放超声波喷枪（12）和喷枪（29）的引入路径，以输送煤尘。

公开(公告)号：US5444733A

公开(公告)日：1995-08-22

申请号：US238060

申请日：1994-05-04

申请人： Giovanni Coassin ,  Corrado De Cecco ,  Gianni Gensini ,  Sergio Gerussi

发明人： Giovanni Coassin ,  Corrado De Cecco ,  Gianni Gensini ,  Sergio Gerussi

IPC分类号： C21C5/52 ,  F27B3/08 ,  F27B3/20 ,  F27B3/22 ,  F27D99/00 ,  F27D1/00

CPC分类号： F27B3/205 ,  C21C5/5217 ,  F27B3/085 ,  F27B3/225 ,  F27D2099/0048 ,  Y02P10/143 ,  Y02P10/216

摘要： Electric arc furnace with alternative sources of energy, which functions with direct current or alternating current and comprises at least one lance (12) to inject pure or combined oxygen above the bath (16) and a plurality of tuyeres (13) positioned in the hearth of the furnace (10) to inject oxygen below the bath, the tuyeres (13) being cooled by a peripheral movement of a cooling mixture consisting of at least one gas having a high cooling power (methane, butane, inert gases, etc.) and of at least one diluting gas (nitrogen, carbon dioxide), pipes (15) being included to introduce additives and powdered coal, post-combustion burners (28) possibly being comprised, the tuyeres (13) including an oxygen delivery pipe (18) having a diameter greater than 8 mm., the oxygen pressure being capable of being modulated according to the working steps, there being a constant minimum pressure of delivery. Melting operating method associated with such an electric furnace, wherein the charging operation with each single charge (skip) is divided into defined periods, with which are associated a pressure of delivery of oxygen through the tuyeres (13) and a percentage of gas having a high cooling power and proportioned to the rate of flow of the oxygen, there being a minimum pressure of delivery of oxygen in each moment of the working of the furnace (10).

摘要翻译： 具有替代能量源的电弧炉，其具有直流或交流电的功能，并且包括至少一个喷枪（12）以在浴（16）上方注入纯净或组合的氧气，以及多个位于炉膛中的风口（13） 的炉子（10）中以将氧气注入到熔池下方，风嘴（13）由冷却混合物的周边运动冷却，冷却混合物由至少一种具有高冷却能力的气体（甲烷，丁烷，惰性气体等）组成， 以及至少一个稀释气体（氮气，二氧化碳），包括引入添加剂和粉煤的管道（15），可能包括的燃烧后燃烧器（28），所述风口（13）包括氧气输送管道（18） ），氧气压力能够根据工作步骤进行调节，存在恒定的最小输送压力。 与这种电炉相关联的熔化操作方法，其中每个单次充电（跳过）的充电操作被划分为限定的时间段，通过风口（13）与氧的输送压力相关联，并且具有 高的冷却功率并且与氧气的流量成比例，在炉子（10）的每个工作时刻都有最小的氧气输送压力。

公开(公告)号：US06327296B1

公开(公告)日：2001-12-04

申请号：US09601574

申请日：2000-09-08

申请人： Alfredo Poloni ,  Milorad Pavlicevic ,  Gianni Gensini ,  Peter Tishchenko ,  Angelico Della Negra

发明人： Alfredo Poloni ,  Milorad Pavlicevic ,  Gianni Gensini ,  Peter Tishchenko ,  Angelico Della Negra

IPC分类号： F27D102

CPC分类号： F27D1/1816 ,  F27D17/003

摘要： A cooled roof for electric arc furnaces (20) or ladle furnaces (29). The roof being used as a covering element and including a cooling system comprising tubes fed with cooling fluid. The roof including at least a central aperture (25) for the positioning and movement of the electrodes (30) and at least a peripheral aperture (14) for the aspiration and discharge of fumes. The aperture (14) being connected to intake systems. The roof including two single-block cooling structures, inner (1) and outer (12), consisting of respective bent tubes (15, 16) developing according to adjacent and superimposed rings or spirals. The inner (11) and outer (12) cooling structures being associated with one another at least in correspondence with the respective bases facing towards the inside of the furnace (20, 29). Between the inner cooling structure (11) and the outer cooling structure (12) there being defined an annular interspace (13) in which the fumes circulate in an annular direction and slow down. The annular interspace (13) communicating with the peripheral aperture. The inner cooling structure (11) including fume-transit interstices connecting the inside of the furnace (20, 29) with the annular interspace (13).

摘要翻译： 电弧炉（20）或钢包炉（29）的冷却屋顶。 屋顶被用作覆盖元件并且包括包括供给冷却流体的管的冷却系统。 该屋顶至少包括用于电极（30）的定位和移动的中心孔（25）和用于抽吸和排放烟雾的至少一个周边孔（14）。 孔（14）连接到进气系统。 屋顶包括两个单块冷却结构，内部（1）和外部（12），由相应的弯曲管（15,16）组成，根据相邻和叠加的环或螺旋形成。 内部（11）和外部（12）冷却结构至少与朝向炉子（20,29）的内部的相应基座相对应。 在内部冷却结构（11）和外部冷却结构（12）之间，限定了环形间隙（13），其中烟雾在环形方向上循环并且减慢。 环形间隙（13）与外围孔连通。 内部冷却结构（11）包括将炉子（20,29）的内部与环形间隙（13）连接的通风间隙。

公开(公告)号：US5762127A

公开(公告)日：1998-06-09

申请号：US470453

申请日：1995-06-06

申请人： Giampietro Benedetti ,  Milorad Pavlicevic ,  Gianni Gensini ,  Alfredo Poloni

发明人： Giampietro Benedetti ,  Milorad Pavlicevic ,  Gianni Gensini ,  Alfredo Poloni

IPC分类号： B22D11/055 ,  B22D11/22 ,  B22D11/04

CPC分类号： B22D11/055 ,  B22D11/22

摘要： Crystalliser and method to control the deformations of the sidewalls of a crystalliser (11) for the continuous casting of billets/blooms/slabs (24), which is associated with a mould (10) and cooperates externally with a box-shaped structure (13) creating a cooling chamber (14), in which a cooling fluid circulates, and cooperates internally with the skin of the billets/blooms/slabs (24) being formed, the cooling chamber (14) containing an intermediate wall (20) creating a circulation channel (21) in cooperation with the outer surface of the sidewall (12) of the crystalliser (11), at least one upper zone (37) being included in cooperation at least with the vicinity of the meniscus and with the portion below the meniscus (27) of liquid metal, a lower zone (38) being also included and beginning in the vicinity of the zone of separation of the forming skin from the inner surface of the sidewall (12) of the crystalliser (11) and extending towards the outlet of the crystalliser (11), the pressure of the cooling fluid in the lower zone (38) of the crystalliser (11) being a function of the desired value (g1) of an air interspace (36) between the sidewall (12) of the crystalliser (11) and the skin of the forming billet/bloom/slab (24), this desired value of air interspace (36) tending towards a zero value.

摘要翻译： 结晶器和控制结晶器（11）的侧壁的变形的方法，用于连续铸造与模具（10）相连的坯料/坯料（24），并且与外壳与箱形结构（13）配合 （14），其中冷却流体循环并与所形成的坯料/坯料/板坯（24）的表皮内部配合，所述冷却室包含中间壁（20），所述中间壁（20）形成 循环通道（21）与结晶器（11）的侧壁（12）的外表面协作，至少一个上部区域（37）至少与弯月面附近配合并且与下部的部分 液体金属的弯月面（27），还包括下部区域（38），并且从成形皮肤与分离器（11）的侧壁（12）的内表面分开的区域附近开始并向着 结晶器（11）的出口， 确定结晶器（11）的下部区域（38）中的冷却流体是结晶器（11）的侧壁（12）和皮肤（11）之间的空气间隙（36）的期望值（g1）的函数 形成坯料/坯料/板坯（24）时，空气间隙（36）的期望值倾向于零值。

公开(公告)号：US5611390A

公开(公告)日：1997-03-18

申请号：US470454

申请日：1995-06-06

申请人： Giampietro Benedetti ,  Milorad Pavlicevic ,  Gianni Gensini ,  Alfredo Poloni

发明人： Giampietro Benedetti ,  Milorad Pavlicevic ,  Gianni Gensini ,  Alfredo Poloni

IPC分类号： B22D11/055 ,  B22D11/22 ,  B22D11/04

CPC分类号： B22D11/22 ,  B22D11/055

摘要： The crystalliser (11) cooperates externally with a box-shaped structure (13) creating cooling chambers (14), in which a cooling fluid circulates, and cooperates internally with the skin of the billets, blooms or slabs (24) being formed. The cooling chambers (14) containing intermediate walls (20) create circulation channels (21) in cooperation with the outer surfaces (12) of the sidewalls of the crystalliser (11), at least one upper zone (34) being included in cooperation at least with the vicinity of the meniscus and with the portion below the meniscus (33) of liquid metal, a lower zone (26) being also included and beginning in the vicinity of the zone of separation of the forming skin from the inner surfaces (12) of the crystalliser (11) and extending towards the outlet of the crystalliser (11). By acting on the cross-section and/or conformation of at least one longitudinal portion of at least one side of the cross-section of the circulation channels (21), e.g., by providing elements to disturb the flow of cooling fluid in the circulation channels (21), and by acting on the different pressures of the cooling fluid present between the inlet and outlet of that longitudinal portion of the circulation channels (21) a desired turbulence of the cooling fluid is created which is such as to increase the coefficient of heat exchange to a value greater than 40,000 W/m.sup.2 K. The side walls of the crystallizer preferably have a thickness between 4 and 15 mm.

摘要翻译： 结晶器（11）在外部与一个形成冷却室（14）的箱形结构（13）配合，其中冷却流体循环，并与内部形成的坯料，花纹或板坯（24）的内部配合。 包含中间壁（20）的冷却室（14）与结晶器（11）的侧壁的外表面（12）配合产生循环通道（21），至少一个上部区域（34）在 至少与弯月面附近并且与液态金属的弯液面（33）下方的部分一起，还包括下部区域（26），并且从成形皮肤与内表面（12）的分离区域附近开始 ）和结晶器（11）的出口延伸。 通过作用于循环通道（21）的横截面的至少一侧的至少一个纵向部分的横截面和/或构造，例如通过提供元件来扰乱循环中的冷却流体的流动 通道（21），并且通过作用于存在于循环通道（21）的该纵向部分的入口和出口之间的冷却流体的不同压力，产生了所需的冷却流体的湍流，这样使得系数 的热交换值大于40,000 W / m2K。 结晶器的侧壁优选地具有4至15mm的厚度。

公开(公告)号：US5940426A

公开(公告)日：1999-08-17

申请号：US805664

申请日：1997-02-27

申请人： Johannes Dratner ,  Gianni Gensini

发明人： Johannes Dratner ,  Gianni Gensini

IPC分类号： F27B3/08 ,  H05B7/11 ,  H05B7/06

CPC分类号： H05B7/11 ,  F27B3/085

摘要： Adapter device for composite electrodes having an auxiliary reactance function on electric arc furnaces, the furnace being able to be of a type fed with direct current or alternating current and comprising at least one secondary supply circuit which connects a transformer (13) to one or more electrode-holder arms (16), the adapter comprising a hollow cylindrical metallic body (21) associated with the relative electrode-holder arm (16) and directed towards the inside of the furnace, the metallic body (21) being connected at its lower end to a graphite segment (24), directed towards the bath of molten metal, at least part of the the adapter (20) including a conductive portion (30) which is made of a highly conductive material and is solidly associated with the metallic body (21) and is dimensioned according to the desired value of overall reactance of the secondary circuit of the furnace.

摘要翻译： 具有在电弧炉上具有辅助电抗功能的复合电极的适配器装置，所述炉能够是馈送直流或交流电流的类型，并且包括至少一个二次电源电路，其将变压器（13）连接到一个或多个 电极夹臂（16），适配器包括与相对电极保持器臂（16）相关联并指向炉内部的中空圆柱形金属体（21），金属体（21）在其下部 （20）的至少一部分包括导电部分（30），导电部分（30）由高导电材料制成并且与金属体牢固地相关联 （21），并且根据炉子二次回路的总电抗的期望值来确定尺寸。

公开(公告)号：US5905754A

公开(公告)日：1999-05-18

申请号：US807158

申请日：1997-02-27

申请人： Johannes Dratner ,  Gianni Gensini

发明人： Johannes Dratner ,  Gianni Gensini

IPC分类号： H05B7/12 ,  H05B7/10

CPC分类号： H05B7/12

摘要： System for connection of pneumatic and/or hydraulic hoses (11) on composite electrodes (12) for arc furnaces, the electrodes (12) comprising, at least one hollow adapter (13) associated at their lower part with a replaceable graphite element (14), the electrode (12) cooperating with an electrode-holder arm (15) and being displaceable axially in relation to that electrode-holder arm (15), the hoses (11) being associated at one end with a first connection assembly (18a) associated with a support (17), the adapter (13) including a solidly attached second connection assembly (18b) mating functionally with the first connection assembly (18a), the first (18a) and second (18b) connection assemblies comprising mating connecting elements (19a, 19b) equipped with elements to interrupt the flow of the fluid which can be temporally actuated, the a support (17) associated with the first connection assembly (18a) having a first inactive position temporally solid with the electrode-holder arm (15) and a second working position released from the electrode-holder arm (15) and temporally solid with the second connection assembly (18b) associated with the adapter (13), the transition from the first inactive position to the second working position of the support (17) taking place according to the position of the electrode (12) in a defined position of engagement/disengagement.

摘要翻译： 用于在用于电弧炉的复合电极（12）上连接气动和/或液压软管（11）的系统，所述电极（12）包括在其下部与可更换的石墨元件（14）相关联的至少一个中空适配器（13） ），所述电极（12）与电极保持器臂（15）配合并且可相对于所述电极固定器臂（15）轴向位移，所述软管（11）在一端与第一连接组件（18a）相关联 ），所述适配器（13）包括与所述第一连接组件（18a）功能配合的牢固连接的第二连接组件（18b），所述第一（18a）和第二（18b）连接组件包括配合连接 元件（19a，19b）装备有用于中断可以暂时致动的流体的流动的元件，与第一连接组件（18a）相关联的支撑件（17）具有与电极保持器臂暂时固定的第一非活动位置 （15）a 第二工作位置从电极保持器臂（15）释放并且与与适配器（13）相关联的第二连接组件（18b）暂时固定，从支撑件（17）的第一非活动位置到第二工作位置的过渡 ）根据电极（12）的位置在接合/分离的限定位置进行。

公开(公告)号：US4644559A

公开(公告)日：1987-02-17

申请号：US587726

申请日：1984-03-08

申请人： Andrea Pittini ,  Gianni Gensini

发明人： Andrea Pittini ,  Gianni Gensini

IPC分类号： H05B7/00 ,  H05B7/148

CPC分类号： H05B7/148 ,  H05B7/005 ,  Y02P10/256 ,  Y02P10/259

摘要： This invention concerns a procedure for controlling the type of arc in an electrical furnace (F), which comprises the monitoring (R) of the short circuit power of the network line (L) during a period of inactivity of the arc, whereby the value thus monitored is processed (B) to determine a primary voltage (V) to be maintained at a transformer (T2) supplying the electrodes of the furnace (F), and whereby the processing (E) combines fixed parameters (P) and at least variable parameters relating to:pre-set conditions of the arc (S),conditions of a substation tap changer (VAR),and line parameters (C) including at least the state of connection of banks of capacitors (C1-C2).The invention also concerns an arc furnace (F) which employs a procedure for controlling the type of arc according to the methods described herein.

摘要翻译： 本发明涉及一种用于控制电炉（F）中的电弧类型的方法，其包括在电弧不活动期间监视（R）网线（L）的短路功率，由此值 对所监视的（B）进行处理（B）以确定供给炉子（F）的电极的变压器（T2）处保持的初级电压（V），由此，处理（E）将固定参数（P）和至少 涉及的可变参数：电弧（S）的预设条件，变电站抽头变换器（VAR）的条件以及至少包括电容器组（C1-C2）的连接状态的线路参数（C）。 本发明还涉及一种电弧炉（F），其采用根据本文描述的方法控制电弧类型的过程。

公开(公告)号：US5968447A

公开(公告)日：1999-10-19

申请号：US955359

申请日：1997-10-21

申请人： Milorad Pavlicevic ,  Peter Tishchenko ,  Alfredo Poloni ,  Gianni Gensini

发明人： Milorad Pavlicevic ,  Peter Tishchenko ,  Alfredo Poloni ,  Gianni Gensini

IPC分类号： B22D41/14 ,  B22D41/60 ,  C21C5/46 ,  F27D3/15 ,  B22D41/08

CPC分类号： C21C5/4653 ,  B22D41/14 ,  B22D41/60 ,  F27D3/1518

摘要： Tapping method for molten metal from containers (13) including at the lower part a tapping channel (14) associated at the end part with a discharge hole (15) substantially vertical or sub-vertical, the discharge hole (15) being associated at the lower part with a sliding interception device (19), wherein the tapping channel (14) comprises, associated with the walls, an electromagnetic device (17) with spirals (18) and a system for cooling the walls, wherein, during the end-of-tapping step of the liquid metal the sliding interception device (19) is activated by closing the discharge hole (15) and allowing the metal in the tapping channel (14) to solidify so as to form at least a layer which lines both the tapping channel (14) and the discharge hole (15) filling it completely, and that during the start-of-tapping step the sliding interception device (19) is activated by leaving the discharge hole (15) free and the metal which is blocking the discharge hole (15) is melted by means of the electromagnetic device (17) by varying the characteristics of the current flow.Tapping device which achieves the method as described above and comprising means (38) to feed the electromagnetic device (17) with electric current as a function of the steps of melting and tapping, the sliding interception device (19) comprising a first part (23a) with a high resistance to heat shock, corrosion and erosion and a second part (23b), positioned adjacent to the first part (23a), with high heat conductivity.

摘要翻译： 从容器（13）的熔融金属的攻丝方法，包括在下部的与端部相关联的攻丝通道（14）具有基本垂直或垂直的排放孔（15），排放孔（15）在 下部具有滑动拦截装置（19），其中所述攻丝通道（14）包括与所述壁相关联的具有螺旋（18）的电磁装置（17）和用于冷却所述壁的系统，其中， 通过关闭排出孔（15）并使分接通道（14）中的金属固化，从而形成至少一层将液体金属的排出步骤 排放通道（14）和排出孔（15）完全填充，并且在开始开始步骤期间，滑动拦截装置（19）通过使排放孔（15）离开而被启动，并且阻塞的金属 排出孔15被熔化 电磁装置（17），通过改变电流的特性。 实现上述方法的攻丝装置包括作为熔化和攻丝步骤的函数将电磁装置（17）馈入电流的装置（38），所述滑动拦截装置（19）包括第一部分（23a） ）具有高耐热冲击，腐蚀和侵蚀的能力，以及与第一部分（23a）相邻的第二部分（23b），具有高导热性。

公开(公告)号：US5960928A

公开(公告)日：1999-10-05

申请号：US905219

申请日：1997-08-01

申请人： Giuseppe Bordignon ,  Gianni Gensini

发明人： Giuseppe Bordignon ,  Gianni Gensini

IPC分类号： B21B1/02 ,  B21B1/18 ,  B21B1/46 ,  B21B39/00 ,  B21B43/00 ,  B65G47/10

CPC分类号： B21B39/004 ,  B21B1/466 ,  B21B43/00 ,  B21B1/18 ,  B21B2001/022

摘要： Method to manage an insulated cooling bed placed downstream of at least one continuous casting machine with one or more feeder ways (12a, 12b, 12c, 12d) and upstream of an outlet rollerway (20) associated with a reheating and temperature-equalisation furnace (15) serving a rolling mill (16), the cooling bed (11) comprising at the inlet a first bridge crane transfer (21a) to load the billets (13) from the feeder ways (12a, 12b, 12c, 12d) and cooperating at the outlet with a bench (14) to collect the billets (13), wherein the first bridge crane transfer (21a) removes the billets (13) from one rollerway (12) or the other and lays them gradually onto the cooling bed (11) insulated at least at the lower part, a second bridge crane transfer (21b) removes the billets (13) from one or another rollerway (12) or from the cooling bed (11) and lays the billets (13) on the outlet rollerway (20) or on the collection bench (14), the billets (13) being made to advance on the cooling bed (11) rotating on their axis. Cooling bed placed between at least a continuous casting machine and a rolling mill (16), including upstream one or more feeder rollerways (12) and downstream an outlet rollerway (20) associated with a bench (14) to collect cold billets and with a reheating and temperature-equalisation furnace (15), the bed comprising positioning seatings (19) for the billets (13) and a first bridge crane transfer (21a), the cooling bed (11) including at least at the lower part an insulated containing structure (18) and comprising a second bridge crane transfer (21b) which is driven autonomously and independently in relation to the first bridge crane transfer (21a), the second bridge crane transfer (21b) being functionally associated at least with the feeder rollerways (12), the positioning seatings (19) for the billets (13) and the outlet rollerway (20).