KR20120020450A - Electric furnace having backfire fever blocking structure - Google Patents

Electric furnace having backfire fever blocking structure Download PDF

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Publication number
KR20120020450A
KR20120020450A KR20100084080A KR20100084080A KR20120020450A KR 20120020450 A KR20120020450 A KR 20120020450A KR 20100084080 A KR20100084080 A KR 20100084080A KR 20100084080 A KR20100084080 A KR 20100084080A KR 20120020450 A KR20120020450 A KR 20120020450A
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South Korea
Prior art keywords
electric furnace
panel
heat
wall
backfire
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KR20100084080A
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Korean (ko)
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지성기
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현대제철 주식회사
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Priority to KR20100084080A priority Critical patent/KR20120020450A/en
Publication of KR20120020450A publication Critical patent/KR20120020450A/en

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    • 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
    • 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/20—Arrangements of heating devices
    • F27B3/205—Burners
    • 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/24—Cooling arrangements
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0033—Linings or walls comprising heat shields, e.g. heat shieldsd
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

PURPOSE: An electric furnace having a backfire heat cutoff structure is provided to prevent damage to a cooling panel by additionally installing a jacket panel on the outer wall of the electric furnace. CONSTITUTION: An electric furnace having a backfire heat cutoff structure comprises a cooling panel(20), a jacket panel(40), and a uneven part. The cooing panel is installed on the outer wall of the electric furnace for melting scraps and prevents the deterioration of the electric furnace. The jacket panel cools the surroundings of a burner unit(30) which applies heat to the inside the electric furnace The uneven part is formed on the inner wall of the electric furnace.

Description

역화열 차단구조를 갖는 전기로{ELECTRIC FURNACE HAVING BACKFIRE FEVER BLOCKING STRUCTURE}ELECTRIC FURNACE HAVING BACKFIRE FEVER BLOCKING STRUCTURE}

본 발명은 전기로 내부에서 발생되는 역화열을 차단하여 냉각패널의 냉각수가 유출되지 않도록 하는 역화열 차단구조를 갖는 전기로에 관한 것이다.
The present invention relates to an electric furnace having a backfire heat blocking structure for blocking the back heat generated inside the electric furnace to prevent the cooling water of the cooling panel from flowing out.

일반적으로 전기로를 이용한 제강 공정에서는, 전기로 내에는 고철 또는 스크랩(Scrap)이 장입되고 전극봉에 전류가 인가됨에 따라 스크랩에 대한 용해가 이루어진다.In general, in a steelmaking process using an electric furnace, scrap metal or scrap is charged in the electric furnace and melting of the scrap is performed as a current is applied to the electrode.

스크랩을 용해하면서, 탈산, 탈황 및 탈류를 하기 위해서, 부원료(Fe-Si, CaCO3, CaO, MO-Oxide) 등을 전기로의 내부로 투입하여 불순물을 제거하고 있다.In order to deoxidize, desulfurize, and deflow while dissolving the scrap, secondary raw materials (Fe-Si, CaCO 3 , CaO, MO-Oxide) and the like are introduced into the electric furnace to remove impurities.

전기로에서 출강되는 용강은 래들(Ladle)에 수강되어서 정련을 위한 곳으로 옮겨진다. 정련은 상기 용강을 승온한 후에 성분을 조정하는 것이다. The molten steel exiting the electric furnace is taken to a ladle and transferred to the place for refining. Refining is a component adjustment after raising the molten steel.

정련된 용강은 연속주조기로 옮겨져서 요구되는 형태로 주조된다. 이렇게 형성된 주조물은, 압연을 통하여 최종적으로 요구되는 형태로 제조된다.
The refined molten steel is transferred to a continuous casting machine and cast in the required shape. The casting thus formed is produced in the form finally required through rolling.

본 발명의 목적은 전기로 내부에서 버너부의 동작으로 발생되는 역화열을 차단 및 냉각시키는 역화열 차단구조를 갖는 전기로를 제공하기 위한 것이다.
An object of the present invention is to provide an electric furnace having a flashback heat blocking structure for blocking and cooling the flashback heat generated by the operation of the burner portion inside the furnace.

상기의 목적을 달성하기 위한 역화열 냉각용 패널이 형성된 전기로는 전류를 통해 스크랩을 용융하는 전기로의 외벽에 설치되어 전기로의 열화를 방지하는 냉각패널; 상기 전기로의 벽면을 관통하여 전기로 내부에 열을 가하는 버너부의 주변에 결합되어 버너부 주변을 냉각시키는 자켓패널; 상기 버너부가 설치되는 전기로의 내벽면에 요철형상으로 형성되어지는 요철부; 및 상기 요철부 전면에 코팅되어지는 코팅부;를 포함하는 것을 특징으로 한다.
An electric furnace on which a backfire heat cooling panel is formed to achieve the above object is installed on an outer wall of an electric furnace for melting scrap through a current to prevent deterioration of the electric furnace; A jacket panel which is coupled to a periphery of a burner part that penetrates the wall of the electric furnace to apply heat to the inside of the electric furnace, and cools the burner periphery; An uneven part formed in an uneven shape on an inner wall surface of the electric furnace in which the burner part is installed; And a coating part coated on the front surface of the uneven part.

상기와 같이 구성되는 본 발명에 관련된 역화열 차단구조를 갖는 전기로에 의하면, 스크랩을 가열할때 스크랩에 반사되어 발생되는 역화를 코팅부가 차단하게 되고, 요철부로 인해 코팅부가 전기로의 내벽면에서 박리되지 않도록 하며, 전기로의 외벽에 자켓패널을 냉각패널과는 별도로 설치하여 역화열로 인해 냉각패널이 파손되지 않도록 하고, 자켓패널이 파손되어도 쉽게 교체 할 수 있도록 하는 이점이 있다.
According to the electric furnace having a flashback heat shield structure according to the present invention configured as described above, the coating unit blocks the backfire generated by the reflection of the scrap when heating the scrap, the coating is not peeled off the inner wall surface of the electric furnace due to the uneven portion In addition, by installing the jacket panel on the outer wall of the electric furnace separately from the cooling panel, there is an advantage that the cooling panel is not damaged due to backfire, and can be easily replaced even if the jacket panel is damaged.

도 1은 본 발명과 관련된 전기로의 구성도,
도 2는 본 발명의 일실시 예에 따른 냉각 패널과 자켓패널을 나타낸 도면,
도 3은 본 발명의 일실시 예에 따른 전기로 내부에 형성된 요철부를 나타낸 단면도,
도 4는 본 발명의 일실시 예에 따른 요철부에 코팅부가 코팅되어 역화열을 차단하는 것을 나타낸 도면,
도 5는 본 발명의 일실시 예에 따른 전기로의 평면과 측단면을 나타낸 도면.1 is a configuration diagram of an electric furnace according to the present invention,
2 is a view showing a cooling panel and a jacket panel according to an embodiment of the present invention,
3 is a cross-sectional view showing an uneven portion formed in the electric furnace according to an embodiment of the present invention;
4 is a view showing that the coating is coated on the uneven portion in accordance with an embodiment of the present invention to block the back heat;
5 is a view showing a plane and a side cross-sectional view of the electric furnace according to an embodiment of the present invention.

이하, 본 발명의 바람직한 실시예에 따른 역화열 차단구조를 갖는 전기로에 대하여 첨부한 도면을 참조하여 상세히 설명한다. 본 명세서에서는 서로 다른 실시예라도 동일?유사한 구성에 대해서는 동일?유사한 참조번호를 부여하고, 그 설명은 처음 설명으로 갈음한다.Hereinafter, with reference to the accompanying drawings for an electric furnace having a back heat shield structure according to a preferred embodiment of the present invention will be described in detail. In the present specification, different embodiments are given the same or similar reference numerals for the same or similar configurations, and the description is replaced with the first description.

전기로는 일측에 스크랩을 저장하는 저장용기를 이송하는 이송장치와, 전기 용융봉으로 스크랩을 용융하는 전기로와, 상기 전기로의 타측에 상기 전기 용융봉을 승하강 시키는 리프팅 장치를 포함한다. 도 1은 이러한 전기로의 구성도이다.The electric furnace includes a transfer device for transporting a storage container for storing scrap on one side, an electric furnace for melting scrap with an electric melting rod, and a lifting device for elevating the electric melting rod on the other side of the electric furnace. 1 is a configuration diagram of such an electric furnace.

도 2는 본 발명의 일실시 예에 따른 냉각 패널과 자켓패널을 나타낸 도면이다.2 is a view showing a cooling panel and a jacket panel according to an embodiment of the present invention.

도 2를 참조하여 설명하면, 전류를 통해 스크랩을 용융하는 전기로(10)의 외벽에 설치되어 전기로(10)의 열화를 방지하는 냉각패널(20)과, 상기 전기로(10)의 벽면을 관통 결합되는 전기로(10) 내부에 열을 가하는 버너부(30)의 주변에 결합되어 버너부(30) 주변을 냉각시키는 자켓패널(40)과, 상기 버너부(30)가 설치되는 전기로(10)의 내벽면에 요철형상으로 형성되어지는 요철부(50)를 포함하여 구성된다.Referring to Figure 2, the cooling panel 20 is installed on the outer wall of the electric furnace 10 for melting scrap through a current to prevent deterioration of the electric furnace 10 and the wall surface of the electric furnace 10 The jacket panel 40 is coupled to the periphery of the burner unit 30 to apply heat to the electric furnace 10 to be penetrated through and to cool the burner unit 30, and the burner unit 30 is provided with electricity. It is comprised including the uneven part 50 formed in the uneven shape on the inner wall surface of the furnace 10. As shown in FIG.

상기 자켓패널(40)은 동 재질로 이루어지고, 상기 버너부(30)의 주변을 냉각시키며, 상기 냉각패널(20)과 별도로 형성되어진다.The jacket panel 40 is made of a copper material, cools the periphery of the burner unit 30, and is formed separately from the cooling panel 20.

도 3은 본 발명의 일실시 예에 따른 전기로 내부에 형성된 요철부를 나타낸 단면도이다.3 is a cross-sectional view showing an uneven portion formed in an electric furnace according to an embodiment of the present invention.

도 3을 참조하여 설명하면, 상기 요철부(50)는, 상기 버너부(30)가 설치되어지는 전기로(10)의 내측 벽면에 범위를 가지고 별도로 구성되어 결합되며, 방열재질로 이루어져 전기로(10) 내부의 역화열을 차단하게 된다.Referring to FIG. 3, the uneven part 50 has a range on the inner wall surface of the electric furnace 10 in which the burner part 30 is installed and is separately configured and coupled to the electric furnace. (10) It blocks the backfire heat inside.

여기서 역화열이란, 스크랩을 전기로에 투입하여 전기 용융봉으로 용융시킬때 전기 용융봉의 열이 미치지 못하는 부분에는 버너부를 통해 가열하게 되는데 이때, 상기 버너부의 불꽃이 스크랩에 의하여 반사되어 역으로 전기로의 외벽을 가열하게 된다. 이러한 반사되는 열을 역화열이라 한다.Here, the heat of inversion means that when the scrap is put into the electric furnace and melted by the electric melting rod, the heat of the electric melting rod does not reach the heating part through the burner part. Will be heated. This reflected heat is called backfire.

상기 코팅부(60)는 방열방화 재질로 이루어지며, 상기 요철부(50) 전면에 코팅되는 코팅부를 더 포함하여 구성된다.The coating part 60 is made of a heat dissipation fireproof material, and further comprises a coating part coated on the front surface of the uneven part 50.

즉, 본 발명을 좀더 상세하게 설명하면 다음과 같다.That is, the present invention will be described in more detail as follows.

스크랩을 용융하는 전기로(10) 외벽에 설치되는 냉각패널(20)과, 상기 전기로 외벽을 관통하여 전기로(10) 내부를 추가로 가열하는 버너부(30)의 외측에 형성되어 역화열을 냉각시키는 자켓패널(40)과, 상기 전기로(10)의 내측 벽면에 형성되어지며, 자켓패널(40)과 대응되도록 형성되는 요철부(50)로 구성된다.It is formed on the outside of the cooling panel 20 installed on the outer wall of the electric furnace 10 for melting scrap and the burner part 30 for further heating the inside of the electric furnace 10 through the outer wall of the electric furnace. It is formed of a jacket panel 40 for cooling the concave and convex portions 50 formed on the inner wall surface of the electric furnace 10 and formed to correspond to the jacket panel 40.

이러한 상기 요철부(50)의 표면에는 코팅부(60)가 코팅되어진다.The coating part 60 is coated on the surface of the uneven part 50.

상기 전기로(10)는 상측에서 전기 용융봉(1)이 삽입되어 투입되는 스크랩을 용융시키고, 외벽을 관통하는 버너부(30)가 다수 설치되어 전기로(10) 내부에서 용융되지 않는 스크랩을 추가 가열하여 용융시키게 된다.The electric furnace (10) melts the scrap into which the electric melting rod (1) is inserted from the upper side, and a plurality of burners (30) penetrating the outer wall are installed to prevent the scrap from melting in the electric furnace (10). Further heating will melt.

상기 버너부(30)는 상기 전기로(10)의 외벽을 관통하여 다수 설치되어지고, 전기로(10) 내부의 스크랩을 별도로 가열하며, 가스 또는 전기 등의 매체를 통해 가열하게 된다.The burner unit 30 is installed through the outer wall of the electric furnace 10, and a plurality of burner scraps inside the electric furnace 10 to be heated separately, through a medium such as gas or electricity.

상기 냉각패널(20)은 상기 전기로(10)의 외측에 설치되어 상기 전기로(10)의 온도가 설정치 이상 올라가지 않도록 냉각수를 통해 전기로(10) 외벽의 온도를 저하시키게된다.The cooling panel 20 is installed outside the furnace 10 to lower the temperature of the outer wall of the furnace 10 through the cooling water so that the temperature of the furnace 10 does not rise above a set value.

상기 자켓패널(40)은 상기 전기로(10)의 외벽에 설치되는 냉각패널(20)의 일부에 별도로 설치되어지며, 상기 버너부(30)가 중심에 위치되도록 설치되고, 동 재질로 이루어지며, 냉각수를 통해 버너부(30)가 작동될때 전기로(10) 내부에서 발생되는 역화열을 냉각시켜 냉각패널(20)이 역화열로 인해 파손되지 않도록 한다.The jacket panel 40 is separately installed on a part of the cooling panel 20 installed on the outer wall of the electric furnace 10, the burner unit 30 is installed to be located in the center, made of the same material When the burner unit 30 is operated through the cooling water, the back heat generated inside the electric furnace 10 is cooled to prevent the cooling panel 20 from being damaged by the back heat.

도 3을 참조하여 설명하면, 상기 요철부(50)는 전기로(10) 내부 벽면에 형성되고, 상기 자켓패널(40)이 설치되는 위치에 대응되도록 형성되어지며, 요철형상으로 형성되어진다.Referring to FIG. 3, the uneven portion 50 is formed on the inner wall of the electric furnace 10, is formed to correspond to the position where the jacket panel 40 is installed, and is formed in the uneven shape.

도 4를 참조하여 설명하면, 상기 코팅부(60)는 버너부(30)가 작동되어 전기로(10) 내부의 스크랩으로 인해 발생되는 역화를 차단하도록 방열방화재질로 이루어지며, 상기 요철부(50)의 전면에 코팅되어진다.Referring to FIG. 4, the coating part 60 is made of a heat dissipation fireproof material to block the backfire caused by the burner part 30 to operate due to scraps in the electric furnace 10, and the uneven part ( 50) is coated on the front.

상기의 구성을 통해 버너부(30)가 전기로(10) 내의 스크랩을 가열할때 스크랩에 반사되어 발생되는 역화를 코팅부(60)가 차단하게 되며, 요철부(50)로 인해 코팅부(60)가 전기로(10)의 내벽면에서 박리되지 않도록 하고, 상기 전기로(10)의 외벽에 자켓패널(40)을 냉각패널(20)과는 별도로 설치하여 역화열로 인해 냉각패널(20)이 파손되지 않도록 하며, 자켓패널(40)이 파손되어도 쉽게 교체 할 수 있도록 하는 이점이 있다.When the burner part 30 heats the scrap in the electric furnace 10 through the above-described configuration, the coating part 60 blocks backfire generated by reflection of the scrap, and the coating part due to the uneven part 50 ( 60 does not peel off from the inner wall surface of the electric furnace 10, and the jacket panel 40 is installed on the outer wall of the electric furnace 10 separately from the cooling panel 20 by the back heat of the cooling panel 20 ) Is not damaged, there is an advantage that can be easily replaced even if the jacket panel 40 is broken.

상기의 본 발명은 바람직한 실시예를 중심으로 살펴보았으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 본질적 기술 범위 내에서 상기 본 발명의 상세한 설명과 다른 형태의 실시예들을 구현할 수 있을 것이다. 여기서 본 발명의 본질적 기술범위는 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.
The present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

1 : 용융봉
10 : 전기로 20 : 냉각패널
30 : 버너부 40 : 자켓패널
50 : 요철부 60 : 코팅부1: molten rod
10: electric furnace 20: cooling panel
30: burner part 40: jacket panel
50: uneven portion 60: coating portion

Claims (4)

전류를 통해 스크랩을 용융하는 전기로의 외벽에 설치되어 전기로의 열화를 방지하는 냉각패널;
상기 전기로의 벽면을 관통하여 전기로 내부에 열을 가하는 버너부의 주변에 결합되어 버너부 주변을 냉각시키는 자켓패널; 및
상기 버너부가 설치되는 전기로의 내벽면에 요철형상으로 형성되어지는 요철부;를 포함하는, 역화열 차단구조를 갖는 전기로.
A cooling panel installed on an outer wall of the electric furnace for melting scrap through electric current to prevent deterioration of the electric furnace;
A jacket panel which is coupled to a periphery of a burner part that penetrates the wall of the electric furnace to apply heat to the inside of the electric furnace, and cools the periphery of the burner part; And
And an uneven part formed in an uneven shape on an inner wall surface of the electric furnace in which the burner part is installed.
제 1항에 있어서,
상기 요철부는,
상기 버너부가 설치되어지는 전기로의 내측 벽면에 범위를 가지고 별도로 구성되어 결합되며, 방열재질로 이루어져 전기로 내부의 역화열을 차단하도록 하는, 역화열 차단구조를 갖는 전기로.
The method of claim 1,
The uneven portion,
An electric furnace having a reverse heat shield structure, which is configured to be separately formed and coupled to the inner wall surface of the electric furnace in which the burner unit is installed, and made of a heat dissipating material to block back heat of heat inside the electric furnace.
제 1항에 있어서,
방열방화 재질로 이루어지며, 상기 요철부 전면에 코팅되는 코팅부;를 더 포함하는, 역화열 차단구조를 갖는 전기로.
The method of claim 1,
It is made of a heat-resistant fire-resistant material, further comprising a coating portion coated on the uneven portion; an electric furnace having a back heat blocking structure.
제 1항에 있어서,
상기 자켓패널은,
동(Cu) 재질로 이루어지고, 상기 버너부의 주변을 냉각시키며, 상기 냉각패널과 별도로 형성되어지는, 역화열 차단구조를 갖는 전기로.The method of claim 1,
The jacket panel,
An electric furnace made of copper (Cu), cooling the periphery of the burner part, and formed separately from the cooling panel.
KR20100084080A 2010-08-30 2010-08-30 Electric furnace having backfire fever blocking structure KR20120020450A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101368353B1 (en) * 2012-05-31 2014-03-03 현대제철 주식회사 Water-cooled panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101368353B1 (en) * 2012-05-31 2014-03-03 현대제철 주식회사 Water-cooled panel

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