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21. 发明授权

US6157665A Method to load scrap for electric arc furnace and relative system 失效
公开(公告)号：US6157665A
公开(公告)日：2000-12-05
申请号：US381913
申请日：1999-09-27
申请人： Giampietro Benedetti , Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Angelico Della Negra
发明人： Giampietro Benedetti , Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Angelico Della Negra
IPC分类号： C21C5/52 , C21C5/56 , F27B3/08 , F27B3/18 , F27D1/18 , F27D13/00 , F27D3/00
CPC分类号： F27D1/1816 , C21C5/527 , C21C5/565 , F27B3/183 , F27D13/002 , Y02P10/216
摘要： Method to load scrap for electric arc furnace including at least a roof (13) associated with movable moving means (17) cooperating with second movable moving means (24), the roof (13) including at least a hole (15) to discharge the fumes (16), the scrap (22) being contained in baskets (21), there being included at least a system to process the fumes (32) connected with the chimney, the full basket (21) including at least a first position (21a) to pre-heat the scrap arranged at the side of and in proximity to the furnace (10) and a second position (21b) to unload the scrap arranged in cooperation with the mouth of the furnace (10), the movable moving means (24) of the basket (21) and the movable moving means (17) of the roof (13) being functionally associated at least momentarily, the basket (21) containing the scrap being installed in a removable manner on the second movable moving means (24) and being associated at least temporally with a covering system (29), which can be translated from a closed position to an open position, the fumes (16) leaving the fourth hole (15) of the furnace (10) being sent inside the basket (21) containing the scrap (22) through a discharge duct which connects an inlet aperture (27) included on the covering system (29) with the fourth hole of the furnace (13), the fumes (16) being made to leave the basket (21) through an outlet aperture cooperating with the bottom of the furnace (13), the fumes (16) being made to leave the basket (21) through an outlet aperture cooperating with the bottom of the basket (21) and directly connected with a combustion chamber (28), the roof (13) passing from its first closed position (13a) to its second open position (13b) in coordination with the passage of the basket (21) from its first pre-heating position (21a) to its second unloading position (21b).

22. 发明授权

US6157664A System to load pre-heated scrap by means of baskets for electric arc furnace 失效
标题翻译：通过电弧炉筐装载预热废料的系统
公开(公告)号：US6157664A
公开(公告)日：2000-12-05
申请号：US381912
申请日：1999-09-27
申请人： Giampietro Benedetti , Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Angelico Della Negra
发明人： Giampietro Benedetti , Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Angelico Della Negra
IPC分类号： C21C5/52 , C21C5/56 , F27B3/08 , F27B3/18 , F27D3/00 , F27D13/00 , F27D23/00
CPC分类号： F27D13/002 , C21C5/527 , C21C5/565 , F27B3/18 , F27D3/0027 , Y02P10/216
摘要： System to load pre-heated scrap by means of baskets for electric arc furnace, the furnace including a movable roof (28), at least one basket (15) loaded with scrap being arranged in a lateral position near the furnace, the basket (15) being associated with a movable covering system (18), there being included at least a pipe (20) connecting the fourth hole of the furnace with the inside of the basket (15) to convey the fumes leaving the furnace (12) with the function of pre-heating the scrap, the pipe (20) being associated with the covering system (18) and able to be moved therewith, the basket (15) being associated with moving means (16a).
摘要翻译： PCT No.PCT / IB98 / 00428 Sec。 371 1999年9月27日第 102（e）1999年9月27日PCT PCT 1998年3月23日PCT公布。第WO98 / 46956号PCT公开日期1998年10月22日通过电弧炉用篮子装载预热废料的系统，炉子包括可移动屋顶（28），至少一个装有废料的篮子（15）布置在靠近炉子的侧面位置，所述篮子（15）与可移动覆盖系统（18）相关联，所述至少一个管道（20）将所述炉子的第四孔与所述篮子（15）的内部连接，以输送离开炉子的烟雾（12）具有预热废料的功能，管道（20）与覆盖系统（18）相关联并且能够与其一起移动，篮子（15）与移动装置（16a）相关联。

23. 发明授权

US5933445A Cooling system for cathodes in direct current electric arc furnaces 失效
标题翻译：直流电弧炉阴极冷却系统
公开(公告)号：US5933445A
公开(公告)日：1999-08-03
申请号：US932600
申请日：1997-09-17
申请人： Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Nuredin Kapaj
发明人： Milorad Pavlicevic , Alfredo Poloni , Gianni Gensini , Nuredin Kapaj
IPC分类号： C21C5/52 , F27B3/24 , H05B7/12 , H05B7/06
CPC分类号： F27B3/24 , C21C5/5229 , H05B7/12 , Y02P10/216
摘要： Cooling system for cathodes, or electrodes, (11) in Direct Current electric arc furnaces, the cathodes (11) comprising a lower consumable graphite part (11a), from which the electric arc is sparked, associated at the upper part with a hollow metallic part (11b) by means of a joint (13), inside the metallic part (11b) there being included a closed cooling circuit (19) with water or other similar cooling fluid, defining an area of evaporation (17) arranged substantially in cooperation with the lower end of the metallic part (11b) and an area of condensation (18) arranged in cooperation with a desired upper area of the metallic part (11b), the area of condensation (18) cooperating with a heat exchanger (15) associated with the outer wall of the metallic part (11b), there also being included an ascending channel (14) for the steam (19a) from the evaporation area (17) to the area of condensation (18) and at least a descending channel (16) whereby the condensation descends, under force of gravity, from the area of condensation (18) to the area of evaporation (17), the descending channel (14) and ascending channel (16) communicating with each other in correspondence with the area of evaporation (17) and the area of condensation (18), the descending channel (16) corresponding with the inner wall of the metallic part (11b) and having an inferior section than the section of the ascending channel (14).
摘要翻译：阴极或电极的冷却系统（11）在直流电弧炉中，阴极（11）包括下部可消耗的石墨部分（11a），电弧被从其中引发，在上部与中空金属部分（11b）通过接头（13）在金属部分（11b）的内部，其中包括具有水或其它类似冷却流体的封闭冷却回路（19），所述闭合冷却回路限定了基本合作布置的蒸发区域（17）与金属部件（11b）的所需上部区域配合配置的金属部件（11b）的下端和冷凝区域（18），与热交换器（15）配合的冷凝区域（18）与所述金属部分（11b）的外壁相关联，还包括用于蒸汽（19a）从蒸发区域（17）到冷凝区域（18）的上升通道（14）和至少下降通道（16），由此在gr的作用下冷凝下降从冷凝区域（18）到蒸发区域（17），下降通道（14）和上升通道（16）相应于蒸发区域（17）和冷凝区域相互连通。（18），与金属部件（11b）的内壁相对应并且具有比上升通道（14）的部分更差的下降通道（16）。

24. 发明授权

US5850413A Device to support and swing the hearth in an electric furnace 失效
标题翻译：在电炉中支撑和摆动炉床的装置
公开(公告)号：US5850413A
公开(公告)日：1998-12-15
申请号：US951740
申请日：1997-10-16
申请人： Gianni Gensini , Daniele Merlino , Angelico Della Negra
发明人： Gianni Gensini , Daniele Merlino , Angelico Della Negra
IPC分类号： C21C5/42 , C21C5/52 , F27B3/06 , F27B14/02
CPC分类号： F27B3/06 , C21C5/42 , C21C5/52 , Y02P10/216
摘要： Device to support and swing the hearth in an electric furnace, whether it be the type operating on direct or alternate current, the furnace being able to be of the channel type, EBT with the hearth lowered or not, OBT or other type, the hearth (11) cooperating at the upper part with a cooled side wall (12) having a closure system (14) which can be temporally associated, the hearth (11) being supported by a platform (18), the device comprising a plurality of lifting cylinders (19, 119) associated at the lower part with the platform (18) and at least a translation and/or oscillation actuator (20, 120; 32) associated at the side of the platform (18), the lifting (19, 119) and translation (20, 120; 32) cylinders being able to be driven independently and in a correlated manner so as to obtain on the hearth (11) desired movements of lifting, translation, swinging, oscillation or a combination of such movements.
摘要翻译：用于在电炉中支撑和摆动炉床的装置，无论是直接或交流电流操作的类型，炉子能够是通道类型，具有炉底降低的EBT，OBT等类型，炉床（11），其在上部与冷却的侧壁（12）配合，所述冷却侧壁具有能够在时间上相关的封闭系统（14），所述炉床（11）由平台（18）支撑，所述装置包括多个提升在下部与平台（18）相关联的缸（19,119）和至少与平台（18）侧相关联的平移和/或振动致动器（20,120; 32） 119）和平移（20,120; 32）圆柱体能够独立地并且以相关方式被驱动，以便在炉床（11）上获得期望的提升，平移，摆动，振动或这种运动的组合的运动。

25. 发明授权

US5239554A Direct-arc electric furnace fed with controlled current and method to feed a direct-arc furnace with controlled current 失效
标题翻译：具有控制电流的直接电弧炉和控制电流的直接电弧炉的方法
公开(公告)号：US5239554A
公开(公告)日：1993-08-24
申请号：US612981
申请日：1990-11-15
申请人： Gianni Gensini , Luciano Morello , Giovanni Coassin , Ricardo Fragiacomo
发明人： Gianni Gensini , Luciano Morello , Giovanni Coassin , Ricardo Fragiacomo
IPC分类号： H05B7/11 , F27B3/08 , H05B7/156
CPC分类号： H05B7/156 , Y02P10/256 , Y02P10/259
摘要： Method to feed a three-phase direct-arc electric furnace with controlled current and also a three-phase electric furnace thus fed for the smelting of metals, e.g. iron-based alloys, the furnace comprising means (GI) for regulation of the length of the arc by means of action on the height of the electrodes, the mains supply of the furnace including at least one medium voltage line and a transformer to serve the arc furnace, an element to regulate the arc current being comprised in each phase in the segment connecting the medium voltage line and the transformer and consisting of at least one inductor (L1), a thyristor-controlled valve (T) or alternatively a regulation element consisting of a saturable reactor being included in parallel with at least part of the inductor, one or the other of these regulation elements cooperating with a device (s1) to measure the intensity of the arc current and with an assembly (GC) that controls the arc current of the furnace by means of action on the overall value of the equivalent series reactance. The method includes feeding current to the furnace through the mains supply and varying the value of a series reactance of the segment connecting the medium voltage line and the transformer.

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