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1. 发明授权

US11320203B2 Electric power method for an electric furnace and corresponding apparatus 有权
公开(公告)号：US11320203B2
公开(公告)日：2022-05-03
申请号：US17050831
申请日：2019-04-24
申请人： DANIELI AUTOMATION S.P.A. , DANIELI & C. OFFICINE MECCANICHE S.P.A.
发明人： Enzo Gigante , Federico Pasut , Andrea Polo
IPC分类号： H05B7/148 , H05B7/144 , F27B3/08 , F27B3/28 , F27D11/10
摘要： An electric power method for an electric arc furnace includes regulating the electric power frequency of a power voltage and a power current of the electrodes, independently from the mains frequency.

2. 发明授权

US11156402B2 Apparatus and method for melting metal material 有权
公开(公告)号：US11156402B2
公开(公告)日：2021-10-26
申请号：US16651424
申请日：2018-09-28
申请人： DANIELI & C. OFFICINE MECCANICHE S.P.A.
发明人： Gianpietro Benedetti , Stefano Terlicher , Federico Bianco , Damiano Patrizio
IPC分类号： H05B7/10 , F27B3/08 , F27B3/18 , F27B3/28 , F27D11/10
摘要： Apparatus for melting metal material comprising a container for metal material, by way of example, but not limited to, metal scrap, DRI, cast iron, supplied in an electric arc-type melting furnace, and a plurality of electrodes to melt the metal material, which can be inserted in said container.

3. 发明申请

US20210329752A1 MELTING FURNACE ELECTRODE HANDLING DEVICES 有权
公开(公告)号：US20210329752A1
公开(公告)日：2021-10-21
申请号：US17273171
申请日：2019-08-27
申请人： Corning Incorporated
发明人： Mark Alan Cook , Raymond Eugene Fraley , Brian Michael Palmer , Kevin Scott Riegel , Tytus Lee Zimmerman
IPC分类号： H05B7/109 , C03B5/03 , H05B7/101 , F27B3/08 , F27D11/10
摘要： Apparatuses for interfacing with an electrode provided with a melting furnace including a vessel and an electrode. In some embodiments, a support assembly (50) supports the electrode outside of the vessel, and includes a cart (102) or similar apparatus that permits or facilitates selective vertical movement of the electrode and selective transverse movement of the electrode. In some embodiments, a push assembly (52) interfaces with a rear face of the electrode outside of the vessel, and is operable to apply a pushing force onto the rear face. The push assembly can include one or more tracks (e.g., threaded screw) that supports a body between opposing arms of a fixed frame. The body can translate along the tracks to apply a pushing force onto the electrode.

4. 发明授权

US11140755B2 Methods of protecting furnace electrodes with cooling liquid that contains an additive 有权
公开(公告)号：US11140755B2
公开(公告)日：2021-10-05
申请号：US16871179
申请日：2020-05-11
申请人： CHEMTREAT, INC.
发明人： Joseph S. Strasser , Joseph M. Hamnik , James R. Lawson , Alan J. Feller
IPC分类号： H05B7/12 , C09K15/02 , F27D11/10 , H05B7/06 , B05D1/02 , B05D3/00 , B05D3/02
摘要： A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.

5. 发明授权

US11009293B2 Direct current smelting electric furnace 有权
公开(公告)号：US11009293B2
公开(公告)日：2021-05-18
申请号：US16968622
申请日：2019-02-01
申请人： Wen Yu
发明人： Wen Yu
IPC分类号： H05B7/144 , F27D11/08 , F27D3/18 , G01R31/42 , F27D11/10 , H05B7/148 , F27D11/12
摘要： A direct current smelting electric furnace includes a rectifying control circuit, a rectifying power supply device, a short network device, a multi-load layout device including multiple electrodes, and an electric furnace body. The rectifying power supply device includes at least two double-circuit direct current power supply packs. Four output terminals of each double-circuit direct current power supply pack are connected to three electrodes in the multi-load layout device by the short network device to constitute two current circuits by an electric furnace weld pool load. Each electrode in the multi-load layout device is connected to homo-polar output terminals of a three-phase negative semi-cycle rectifying output circuit and a three-phase positive semi-cycle rectifying output circuit, separately. The rectifying power supply device-includes multiple output current circuits. The number of output current circuits of the rectifying power supply device is the same as the number of electrodes in the multi-load layout device.

6. 发明申请

US20200284512A1 APPARATUS AND METHOD FOR MELTING METAL MATERIAL 审中-公开
公开(公告)号：US20200284512A1
公开(公告)日：2020-09-10
申请号：US16651424
申请日：2018-09-28
申请人： DANIELI & C. OFFICINE MECCANICHE S.P.A.
发明人： Gianpietro Benedetti , Stefano Terlicher , Federico Bianco , Damiano Patrizio
IPC分类号： F27B3/08 , F27B3/18 , F27B3/28 , F27D11/10
摘要： Apparatus for melting metal material comprising a container for metal material, by way of example, but not limited to, metal scrap, DRI, cast iron, supplied in an electric arc-type melting furnace, and a plurality of electrodes to melt the metal material, which can be inserted in said container.

7. 发明申请

US20200275535A1 METHODS OF PROTECTING FURNACE ELECTRODES WITH COOLING LIQUID THAT CONTAINS AN ADDITIVE 审中-公开
公开(公告)号：US20200275535A1
公开(公告)日：2020-08-27
申请号：US16871179
申请日：2020-05-11
申请人： CHEMTREAT, INC.
发明人： Joseph S. STRASSER , Joseph M. HAMNIK , James R. LAWSON , Alan J. FELLER
IPC分类号： H05B7/12 , F27D11/10 , H05B7/06 , C09K15/02
摘要： A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.

8. 发明申请

US20200165692A1 METHOD FOR OPERATING MELTING/REFINING FURNACE AND MELTING-REFINING FURNACE 审中-公开
公开(公告)号：US20200165692A1
公开(公告)日：2020-05-28
申请号：US16638530
申请日：2017-09-28
申请人： TAIYO NIPPON SANSO CORPORATION
发明人： Yoshiyuki HAGIHARA , Yasuyuki YAMAMOTO , Naoki SEINO
IPC分类号： C21B13/12 , F27B14/06 , F27D3/00 , F27D11/10 , F27D3/16 , C21C5/52
摘要： The object of the present invention is to improve the efficiency when operating the melting/refining furnace of the cold iron source using a burners and a lance, or during refining, and the present invention provides a method for operating a melting/refining furnace comprising a through hole so as to penetrate a furnace wall, at least one burners provided in the through hole; and at least one lances installed in an oxidant gas supply hole provided above the through-hole for the burner, wherein an amount of oxygen introduced in the melting step is adjusted to a range calculated based on a the furnace volume.

9. 发明申请

US20200018550A1 CONVERTIBLE METALLURGICAL FURNACE AND MODULAR METALLURGICAL PLANT COMPRISING SAID FURNACE FOR CONDUCTING PRODUCTION PROCESSES FOR THE PRODUCTION OF METALS IN THE MOLTEN STATE, IN PARTICUALR STEEL OR CAST IRON 审中-公开
公开(公告)号：US20200018550A1
公开(公告)日：2020-01-16
申请号：US16465626
申请日：2016-12-02
申请人： TENOVA S.P.A. , TENOVA INDUSTRIAL TECHNOLOGIES (BEIJING) CO., LTD
发明人： Silvio Maria REALI , Cesare GIAVANI , Giuseppino VIRGILI , Cristian CATTALINI
IPC分类号： F27D11/10 , C21B11/10 , C21C5/52 , C21C5/54 , F27D1/02 , F27D3/00 , F27D3/14 , H05B7/20 , F27D3/15 , H05B7/144 , F27B14/02 , F27B14/06
摘要： A metallurgical furnace including a vessel, in turn having a lower shell for containing the metal bath, the metal bath being composed of molten metal and an overlying layer of slag, wherein the lower shell is tiltingly supported and is provided with a deslagging opening for evacuating the slag and with a tapping opening for tapping the molten metal, and an upper shell removably positioned on the lower shell and provided with at least one inlet opening for feeding, through the same, charge material in the solid state or in the molten state, a closing roof for the upper closing of the vessel, wherein the closing roof is removably positioned on the upper shell and is provided with a passage opening for the passage, through the same, of at least one electrode and at least one charge opening for feeding, through the same, charge material in the solid state, wherein at least one of the inlet openings, the passage opening, the charge opening is closed or can be associated with a closing element of the removable type, and wherein the lower shell has a diameter D and the vessel has an overall height H ranging from 0.70 D to 1.25 D, preferably ranging from 0.70 D to 0.80 D if the furnace is used as an electric arc furnace and from 0.80 D to 1.25 D if the furnace is used as a converter.

10. 发明授权

US10449581B2 System and method for an electrode seal assembly 有权
公开(公告)号：US10449581B2
公开(公告)日：2019-10-22
申请号：US15388299
申请日：2016-12-22
申请人： Kurion, Inc.
发明人： Brett Campbell , Craig Shearer , Kevin Finucane , Steve Woosley , Eric Dysland
IPC分类号： H05B7/12 , B09B3/00 , C03B5/027 , C03B5/00 , F27B3/08 , F27D11/10 , F27D21/00 , F27D99/00 , F27D21/02
摘要： A sealing system for isolating the environment inside a vitrification container from the outside environment comprises a vitrification container with a lid. The lid comprises two or more electrode seal assemblies through which two or more electrodes may be operatively positioned and extend down through the lid into the vitrification container. The electrodes may move axially up and down through the electrode seal assemblies or lock into place. The electrode seal assemblies each comprise a housing having two halves with recessed ring grooves. Sealing rings with a split may be placed into the grooves. Gas galleries may be machined or cast into the housing such that they are adjacent to the ring grooves. The gas galleries distribute gas onto the external faces of the sealing rings causing a change in pressure resulting in the sealing rings compressing onto the electrodes and forming a seal.

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