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WO2022064280A1 - Électrode en cuivre creuse intégrée dans un trou à laitier à conductivité thermique - Google Patents

Électrode en cuivre creuse intégrée dans un trou à laitier à conductivité thermique Download PDF

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Publication number
WO2022064280A1
WO2022064280A1 PCT/IB2021/050756 IB2021050756W WO2022064280A1 WO 2022064280 A1 WO2022064280 A1 WO 2022064280A1 IB 2021050756 W IB2021050756 W IB 2021050756W WO 2022064280 A1 WO2022064280 A1 WO 2022064280A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
cap
temperature
electrode
slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2021/050756
Other languages
English (en)
Inventor
Majid RAHIMI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danesh Parto Naghsh Jahan Co
Original Assignee
Danesh Parto Naghsh Jahan Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Danesh Parto Naghsh Jahan Co filed Critical Danesh Parto Naghsh Jahan Co
Priority to EP21786314.1A priority Critical patent/EP3994958A4/fr
Publication of WO2022064280A1 publication Critical patent/WO2022064280A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/06—Electrodes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/1554—Equipment for removing or retaining slag for removing the slag from the surface of the melt
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • C21C2005/5235—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace with bottom electrodes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2250/00—Specific additives; Means for adding material different from burners or lances
    • C21C2250/06—Hollow electrode

Definitions

  • the technical field of this invention relates to the equipment of steelmaking super-heavy electric arc is in which high purity copper electrode is used.
  • a graphite electrode consisting of a graphite electrode body is made of anode type, which is graphitized at a temperature of less than 2700 C and has an iron content of less than 1 0.1 weight.
  • Graphite electrode, which is an intermediate product consists of anode-sized stitch particles with an average size of 5 to 10 mm and an ash content of less than 0.05% mixed with bitumen adhesive, which is in the form of a green electrode and must be cured to form a graphite electrode.
  • the material of the electrode is graphite, while the material of the claimed electrode is copper, and on the other hand, in this invention, the method of producing graphite electrode is revealed, not the heat reduction method.
  • a slag copper electrode is a special heat exchanger that has a key application in steel melting furnaces. This equipment is placed at the slag hole of furnaces of super heavy furnaces of 240 tons so that the slag exit from the kiln by side swiping with this part.
  • Figure 1 Exploded view of the part
  • Figure 2 Longitudinal section of part
  • Input water at 60 ° C water fluid to transfer heat generated in the part
  • the water should have a temperature of about 60 C.
  • the material of the cover is technically selected in such a way that while tolerating high thermal stresses, it does not crack and has the ability to weld to copper, and in addition to all these properties, it does not rust.
  • the cap (2) separating the two parts of the flow from each other causes the flow of water inside the holes embedded in the copper body which is in direct contact with the heat source.
  • the copper body (3) is an integrated intermediary between direct external heat on the one hand and heat-carrying water on the other.
  • the outer surface (6) of this body will be in contact with slag.
  • the fluid separating tube (4) causes the water that enters from the holes of the copper piece (7) to move again towards the inlet near the copper wall to hit the cap (2) and is directed to the center of the same tube and from the other side of the piece.
  • a holder is installed in the cover (5) from which the water comes out.
  • This product is installed under the molten slag outlet of super heavy furnaces and its hydrogen inlet is taken from the outlet water of the panel and after circulating in this product and cooling it, it is transferred to the cooling towers.
  • This product is used in super heavy steel furnaces and is used to guide molten slag into the pan. This equipment is placed at the exit of slag from melting super-heavy furnaces so that the slag exits the kiln and leaves the kiln after colliding with this part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne une électrode en cuivre individuelle qui vise à prolonger la durée de vie de l'électrode dans le trou à laitier. La conception particulière de cette pièce en matière de résistance aux contraintes thermiques permet d'obtenir une pièce de protection fiable contre une température de 1200 °C. La chaleur générée dans le corps de cette pièce est expulsée par l'intermédiaire d'un fluide circulant dans les conduits conçus à cet effet et la température de la pièce reste constante dans la mesure où elle n'endommage pas la pièce. La chaleur générée dans le corps de cette pièce est expulsée par l'intermédiaire du fluide circulant dans les conduits conçus à cet effet et la température de la pièce reste constante dans la mesure où elle ne provoque pas la destruction de la pièce.
PCT/IB2021/050756 2020-09-26 2021-01-31 Électrode en cuivre creuse intégrée dans un trou à laitier à conductivité thermique Ceased WO2022064280A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21786314.1A EP3994958A4 (fr) 2020-09-26 2021-01-31 Électrode en cuivre creuse intégrée dans un trou à laitier à conductivité thermique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IR139950140003005776 2020-09-26
IR13993005776 2020-09-26

Publications (1)

Publication Number Publication Date
WO2022064280A1 true WO2022064280A1 (fr) 2022-03-31

Family

ID=83356813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/050756 Ceased WO2022064280A1 (fr) 2020-09-26 2021-01-31 Électrode en cuivre creuse intégrée dans un trou à laitier à conductivité thermique

Country Status (2)

Country Link
EP (1) EP3994958A4 (fr)
WO (1) WO2022064280A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103468845A (zh) 2013-09-09 2013-12-25 南京联合荣大工程材料有限责任公司 带有内嵌水冷却系统的高炉出渣沟

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397645A (en) * 1977-02-04 1978-08-26 Daido Steel Co Ltd Anode for transfer system plasma-arc blast furnace
IT201800005620A1 (it) * 2018-05-23 2019-11-23 Elettrodo raffreddato per forno metallurgico elettrico

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103468845A (zh) 2013-09-09 2013-12-25 南京联合荣大工程材料有限责任公司 带有内嵌水冷却系统的高炉出渣沟

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3994958A4

Also Published As

Publication number Publication date
EP3994958A4 (fr) 2022-10-26
EP3994958A1 (fr) 2022-05-11

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