KR101185235B1 - The Bottom Structure of Electric furnace - Google Patents

The Bottom Structure of Electric furnace Download PDF

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Publication number
KR101185235B1
KR101185235B1 KR20090103216A KR20090103216A KR101185235B1 KR 101185235 B1 KR101185235 B1 KR 101185235B1 KR 20090103216 A KR20090103216 A KR 20090103216A KR 20090103216 A KR20090103216 A KR 20090103216A KR 101185235 B1 KR101185235 B1 KR 101185235B1
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South Korea
Prior art keywords
electrode
electrode mounting
mounting hole
electric furnace
insulating
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KR20090103216A
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Korean (ko)
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KR20110046693A (en
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조항
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현대제철 주식회사
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    • 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
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/14—Arrangements of linings
    • 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
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of 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
    • 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
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

본 발명은 전기로의 바닥 구조체에 관한 것으로, 철재로 이루어져 전기로의 바닥면을 형성하고 제 1 전극 설치 구멍이 형성된 바닥 외피부재와, 상기 바닥 외피부재의 내측면을 감싸며 상기 제 1 전극 설치 구멍에 연통되는 제 2 전극 설치 구멍이 형성된 바닥 내화 벽체부재와, 상기 바닥 외피부재상기 제 1 전극 설치 구멍과 상기 제 2 전극 설치 구멍을 통해 설치되는 로저 전극과, 상기 로저 전극와 상기 바닥 외피부재를 절연시키는 절연부재를 포함하며, 상기 바닥 외피부재에 스크랩에 포함된 납을 배출하는 납 배출 구멍이 형성된 것이다.The present invention relates to a floor structure of an electric furnace, comprising a bottom outer shell member made of steel to form a bottom surface of the electric furnace and having a first electrode mounting hole, and surrounding the inner surface of the bottom outer shell member and communicating with the first electrode mounting hole. A bottom fireproof wall member having a second electrode mounting hole formed therein, a bottom electrode installed through the first electrode mounting hole and the second electrode mounting hole, and a lower electrode insulated from the bottom electrode and the bottom electrode member; It includes a member, the bottom shell member is formed with a lead discharge hole for discharging lead contained in the scrap.

본 발명은 고철에 포함된 납이 용해 중에 내화 벽체 내로 스며들어 철재로 형성된 외피에 접촉되는 것을 방지하여 통전에 의한 사고 발생을 막고, 제강 공장의 안전성을 높이는 효과가 있다.The present invention prevents the lead contained in the scrap metal penetrates into the fireproof wall during melting to prevent contact with the outer skin formed of the iron to prevent accidents caused by energization, and enhance the safety of the steel mill.

본 발명은 철재 외피로의 통전 사고로 전기로 내에 장착되는 수냉함의 파손을 방지하여 자재비를 절감하고, 보수, 정비에 따른 인건비를 절감하는 효과가 있는 것이다.The present invention is to prevent the breakage of the water cooler installed in the electric furnace by the energization of the steel shell road to reduce the material cost, there is an effect of reducing the labor cost according to the maintenance, maintenance.

Description

전기로의 바닥 구조체{The Bottom Structure of Electric furnace}The bottom structure of electric furnace

본 발명은 전기로의 바닥 구조체에 관한 것으로 더 상세하게는 로저 전극이 장착되는 The present invention relates to a floor structure of an electric furnace, and more particularly, to which a Roger electrode is mounted

일반적으로 전기로는 전기에너지를 이용하여 금속이나 합금을 가열, 용해하는 노를 말하는 것으로, 노 내부로 스크랩을 장입한 후 3개의 전극과 스크랩 사이로 아크 형태의 전류를 발생시켜 가열하여 스크랩을 용해시키는 것이다. In general, an electric furnace refers to a furnace for heating and dissolving a metal or an alloy by using electrical energy. After charging a scrap into the furnace, an arc current is generated between the three electrodes and the scrap to heat the melt. .

전기로는 철재로 이루어진 외피부와, 상기 외피부의 내측을 감싸는 내화 벽체를 포함한 구조를 가지며, 상부 몸체 내측에는 냉각수가 순환되어 전기로 본체의 외벽을 보호하는 수냉함이 장착된다.The electric furnace has a structure including an outer skin part made of steel and a fireproof wall covering the inner side of the outer skin part, and a water cooler is installed inside the upper body to circulate cooling water to protect the outer wall of the electric furnace body.

또 상기 전기로는 천장을 관통하는 전극봉 및 로의 바닥에 장착되는 로저 전극을 포함하여 전기로 내부에 스크랩, 즉, 고철을 장입하고 직류 전기를 공급함으로써 스크랩을 용해시켜 용강을 제조하는 것이다.In addition, the electric furnace includes an electrode rod penetrating the ceiling and a Roger electrode mounted on the bottom of the furnace, so that scrap, that is, scrap metal is charged into the electric furnace, and the direct current is supplied to melt the scrap to manufacture molten steel.

본 발명은 전기로 작동 중 전기로의 철재 외피로 통전되는 사고를 방지하는 전기로의 바닥 구조체를 제공하는 데 있다.The present invention is to provide a floor structure of the electric furnace to prevent an accident that is energized to the steel shell of the electric furnace during the operation of the electric furnace.

이러한 본 발명의 과제는 철재로 이루어져 전기로의 바닥면을 형성하고 제 1 전극 설치 구멍이 형성된 바닥 외피부재와;The object of the present invention comprises a bottom shell member made of steel to form a bottom surface of the electric furnace and the first electrode mounting hole is formed;

상기 바닥 외피부재의 내측면을 감싸며 상기 제 1 전극 설치 구멍에 연통되는 제 2 전극 설치 구멍이 형성된 바닥 내화 벽체부재와;A bottom fireproof wall member which surrounds an inner surface of the bottom shell member and has a second electrode mounting hole communicating with the first electrode mounting hole;

상기 제 1 전극 설치 구멍과 상기 제 2 전극 설치 구멍 내로 설치되는 로저 전극과;A Roger electrode provided in said first electrode mounting hole and said second electrode mounting hole;

상기 로저 전극와 상기 바닥 외피부재를 절연시키는 절연부재를 포함하며, An insulation member for insulating the Roger electrode and the bottom skin member;

상기 바닥 외피부재에 스크랩에 포함된 납을 배출하는 납 배출 구멍이 형성된 전기로의 바닥 구조체를 제공하는 데 있다.It is to provide a floor structure of the electric furnace is formed with a lead discharge hole for discharging lead contained in the scrap in the bottom shell member.

본 발명은 고철에 포함된 납이 용해 중에 내화 벽체 내로 스며들어 철재로 형성된 외피에 접촉되는 것을 방지하여 통전에 의한 사고 발생을 막고, 제강 공장의 안전성을 높이는 효과가 있다.The present invention prevents the lead contained in the scrap metal penetrates into the fireproof wall during melting to prevent contact with the outer skin formed of the iron to prevent accidents caused by energization, and enhance the safety of the steel mill.

본 발명은 철재 외피로의 통전 사고로 전기로 내에 장착되는 수냉함의 파손을 방지하여 자재비를 절감하고, 보수, 정비에 따른 인건비를 절감하는 효과가 있 는 것이다.The present invention is to prevent the breakage of the water cooler mounted in the electric furnace by the energization of the steel shell road to reduce the material cost, there is an effect of reducing the labor costs due to maintenance, maintenance.

본 발명의 바람직한 실시 예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명이 적용된 전기로의 구조를 도시한 단면도로서, 본 발명이 적용된 전기로의 내부 구조를 개략적으로 나타내고 있다. 1 is a cross-sectional view showing the structure of an electric furnace to which the present invention is applied, and schematically shows an internal structure of the electric furnace to which the present invention is applied.

도 2는 도 1의 'A'의 요부 확대 단면도로서, 본 발명인 전기로의 바닥 구조체를 상세히 나타내고 있다.FIG. 2 is an enlarged cross-sectional view of the main portion 'A' of FIG. 1 and shows the bottom structure of the electric furnace of the present invention in detail.

이하, 도 1에서 도시한 바와 같이 전기로(1)는 상부 구조체(1a)와, 바닥 구조체(1b)로 구분된다.Hereinafter, as shown in FIG. 1, the electric furnace 1 is divided into an upper structure 1a and a bottom structure 1b.

상기 상부 구조체(1a)는 철재로 이루어진 상부 외피부의 내측면에 냉각수가 순환되는 수냉함이 설치된다.The upper structure (1a) is provided with a water cooler in which the coolant is circulated on the inner surface of the upper outer shell portion made of steel.

또 바닥 구조체(1b)는 철재로 이루어져 전기로(1)의 바닥면을 형성하고 제 1 전극 설치 구멍(10a)이 형성된 바닥 외피부재(10)와;In addition, the bottom structure (1b) is made of steel to form the bottom surface of the electric furnace (1) and the bottom shell member 10, the first electrode mounting hole (10a) is formed;

상기 바닥 외피부재(10)의 내측면을 감싸며 상기 제 1 전극 설치 구멍(10a)에 연통되는 제 2 전극 설치 구멍(20a)이 형성된 바닥 내화 벽체부재(20)를 포함한다.A bottom fireproof wall member 20 is formed to surround the inner surface of the bottom sheath member 10 and have a second electrode installation hole 20a communicating with the first electrode installation hole 10a.

또 바닥 구조체(1b)에는 상기 상부 구조체(1a)의 천장에 설치되는 전극봉과 함께 직류 전기를 발생시키는 로저 전극(30)이 설치된다.In addition, the bottom electrode 1b is provided with a Roger electrode 30 for generating direct current electricity together with the electrode rod installed on the ceiling of the upper structure 1a.

상기 로저 전극(30)은 상기 바닥 외피부재(10)의 상기 제 1 전극 설치 구 멍(10a)과 상기 제 2 전극 설치 구멍(20a)을 통해 설치된다.The Roger electrode 30 is installed through the first electrode installation hole 10a and the second electrode installation hole 20a of the bottom shell member 10.

상기 바닥 외피부재(10)는 전기로(1)의 바닥면을 형성하고, 제 1 전극 설치 구멍(10a)이 형성된 바닥 외피부(11)와;The bottom shell member 10 forms a bottom surface of the electric furnace 1 and has a bottom shell portion 11 having a first electrode installation hole 10a;

상기 제 1 전극 설치 구멍(10a)의 하부로 바닥 외피부(11)에서 연장되게 돌출되는 전극 장착부(12)와;An electrode mounting portion 12 protruding from the bottom shell portion 11 to the lower portion of the first electrode mounting hole 10a;

상기 전극 장착부(12)의 하단부 내주면에 돌출되어 상기 로저 전극(30)이 안착되며 스크랩에 포함된 납을 배출하는 납 배출 구멍(50)이 형성된 받침부(13)를 포함한다.It includes a support portion 13 protruding to the inner peripheral surface of the lower end of the electrode mounting portion 12 is seated on the Roger electrode 30, the lead discharge hole 50 is formed to discharge lead contained in the scrap.

그리고 본 발명은 상기 로저 전극(30)과 상기 바닥 외피부재(10)를 절연시키는 절연부재(40)를 포함하며, 상기 절연부재(40)는 상기 로저 전극(30)의 하부 외측을 감싸 절연하는 제 1 절연부(41)와;In addition, the present invention includes an insulating member 40 that insulates the Roger electrode 30 and the bottom shell member 10, wherein the insulating member 40 wraps and insulates the lower outer side of the Roger electrode 30. A first insulating portion 41;

상기 받침부(13)의 상부면을 커버하도록 장착되는 제 2 절연부(42)와;A second insulating part 42 mounted to cover the upper surface of the supporting part 13;

상기 전극 장착부(12)의 내측면을 감싸도록 장착되는 제 3 절연부(43)를 포함한다.And a third insulating part 43 mounted to surround the inner side surface of the electrode mounting part 12.

또한 상기 절연부재(40)는 상기 납 배출 구멍(50)의 내주면을 감싸 절연시키는 제 4 절연부(44)를 더 포함하는 것이 바람직하다.In addition, the insulating member 40 preferably further includes a fourth insulating portion 44 which surrounds and insulates the inner circumferential surface of the lead discharge hole 50.

또 상기 바닥 내화 벽체부재(20)는 상기 바닥 외피부(11)의 내측면을 감싸 보호하는 제 1 내화벽부(21)와;The bottom fireproof wall member 20 may include a first fireproof wall part 21 which surrounds and protects an inner surface of the bottom skin part 11;

상기 전극 장착부(12)의 내측면을 감싸도록 장착되는 제 2 내화벽부(22)를 포함한다.And a second fireproof wall portion 22 mounted to surround the inner surface of the electrode mounting portion 12.

본 발명은 전기로(1) 내에서 전극봉과 로저 전극(30)으로 전기가 통하면서 스크랩을 용해시켜 용강을 제조할 때 스크랩에 포함된 납과 같은 전도성 이물질이 상기 바닥 내화벽체부재를 통해 상기 바닥 외피부재(10)로 접촉되는 경우가 발생하는 것이다.According to the present invention, when a molten steel is produced by dissolving scrap while electricity is supplied to the electrode rod and the Roger electrode 30 in the electric furnace 1, a conductive foreign material such as lead contained in the scrap is transferred to the bottom through the bottom fireproof wall member. The case of contact with the outer shell member 10 will occur.

상기한 바와 같이 납 등의 전도성 물질에 의해 철재의 바닥 외피부재(10)로 통전이 이루어지면 스파크가 발생하고, 상기 상부 구조체(1a)의 수냉함에 스파크 용손이 발생하는 문제점이 있고, 이로 인한 조업 중단으로 생산성이 저하되고, 수냉함의 교체 정비로 인건비 및 자재비가 많이 소요되는 것이다.As described above, when electricity is supplied to the bottom outer shell member 10 of the steel by a conductive material such as lead, spark is generated, and there is a problem that spark melting occurs in the water cooling of the upper structure 1a. Productivity is lowered due to interruption, and labor and material costs are high due to replacement and maintenance of the water cooler.

본 발명은 용강 제조 시 스크랩에 포함되고, 상기 바닥 내화 벽체부재(20)의 내부를 통과하는 납 등의 불순물을 상기 납 배출 구멍(50)을 통해 배출시켜 상기 납 등의 불출물이 철재의 상기 바닥 외피부재(10)에 접촉되지 않도록 한다.The present invention is included in the scrap during the production of molten steel, discharge impurities such as lead passing through the interior of the bottom fire-resistant wall member 20 through the lead discharge hole 50, the discharge of the lead, such as Avoid contact with the bottom skin member 10.

또한 본 발명은 제 1 절연부(41) 및 제 2 절연부(42), 제 3 절연부(43), 제 4 절연부(44)를 통해 상기 바닥 내화 벽체부재(20)를 통해 납 배출 구멍(50)으로 납 등의 불순물이 철재의 상기 바닥 외피부재(10)에 접촉되어 통전되는 것을 완전히 차단하는 것이다.In addition, the present invention is a lead discharge hole through the bottom refractory wall member 20 through the first insulating portion 41 and the second insulating portion 42, the third insulating portion 43, the fourth insulating portion 44. (50) completely prevents impurities such as lead from coming into contact with the bottom shell member 10 made of iron.

따라서 본 발명은 로저 전극(30)의 장착 부분에서 전기로(1)의 철재 외피로 통전되는 사고를 미연에 방지할 수 있는 것이다.Therefore, the present invention can prevent the accident of energizing the steel shell of the electric furnace 1 in the mounting portion of the Roger electrode 30 in advance.

본 발명은 상기한 실시 예에 한정되는 것이 아니라, 본 발명의 요지에 벗어나지 않는 범위에서 다양하게 변경하여 실시할 수 있으며 이는 본 발명의 구성에 포함됨을 밝혀둔다.The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention, which is understood to be included in the configuration of the present invention.

도 1은 본 발명이 적용된 전기로의 구조를 도시한 단면도1 is a cross-sectional view showing the structure of an electric furnace to which the present invention is applied

도 2는 도 1의 'A'의 요부 확대 단면도FIG. 2 is an enlarged cross-sectional view of main parts of 'A' of FIG. 1;

*도면 중 주요 부호에 대한 설명** Description of the major symbols in the drawings *

10 : 바닥 외피부재 11 : 바닥 외피부10: bottom skin member 11: bottom skin

12 : 전극 장착부 13 : 받침부12 electrode mounting portion 13 base portion

20 : 바닥 내화 벽체부재 21 : 제 1 내화벽부20: floor fireproof wall member 21: first fireproof wall portion

22 : 제 2 내화벽부 30 : 로저 전극22: second fireproof wall portion 30: Roger electrode

40 : 절연부재 41 : 제 1 절연부40: insulating member 41: first insulating portion

42 : 제 2 절연부 43 : 제 3 절연부42: second insulation portion 43: third insulation portion

44 : 제 4 절연부 50 : 납 배출 구멍44: fourth insulator 50: lead discharge hole

Claims (5)

철재로 이루어져 전기로의 바닥면을 형성하고 제 1 전극 설치 구멍이 형성된 바닥 외피부재와;A bottom skin member made of steel to form a bottom surface of the electric furnace and having a first electrode mounting hole formed therein; 상기 바닥 외피부재의 내측면을 감싸며 상기 제 1 전극 설치 구멍에 연통되는 제 2 전극 설치 구멍이 형성된 바닥 내화 벽체부재와;A bottom fireproof wall member which surrounds an inner surface of the bottom shell member and has a second electrode mounting hole communicating with the first electrode mounting hole; 상기 제 1 전극 설치 구멍과 상기 제 2 전극 설치 구멍 내로 설치되는 로저 전극과;A Roger electrode provided in said first electrode mounting hole and said second electrode mounting hole; 상기 로저 전극와 상기 바닥 외피부재를 절연시키는 절연부재를 포함하며, An insulation member for insulating the Roger electrode and the bottom skin member; 상기 바닥 외피부재는 전기로의 바닥면을 형성하고, 제 1 전극 설치 구멍이 형성된 바닥 외피부와;The bottom skin member forms a bottom surface of the electric furnace, and a bottom skin portion in which a first electrode mounting hole is formed; 상기 제 1 전극 설치 구멍의 하부로 바닥 외피부에서 연장되게 돌출되는 전극 장착부와;An electrode mounting portion protruding from the bottom skin portion to a lower portion of the first electrode mounting hole; 상기 전극 장착부의 하단부 내주면에 돌출되어 상기 로저 전극이 안착되며 스크랩에 포함된 납을 배출하는 납 배출 구멍이 형성된 받침부를 포함하고, A support portion protruding from an inner circumferential surface of the lower end portion of the electrode mounting portion to which the Roger electrode is seated and having a lead discharge hole for discharging lead included in the scrap; 상기 절연부재는 상기 로저 전극의 하부 외측을 감싸 절연하는 제 1 절연부와;The insulating member may include a first insulating part wrapping and insulating the lower outer side of the Roger electrode; 상기 받침부의 상부면을 커버하도록 장착되는 제 2 절연부와;A second insulating part mounted to cover the upper surface of the supporting part; 상기 전극 장착부의 내측면을 감싸도록 장착되는 제 3 절연부와;A third insulating part mounted to surround the inner surface of the electrode mounting part; 상기 절연부재는 상기 납 배출 구멍의 내주면을 감싸 절연시키는 제 4 절연부를 포함하는 것을 특징으로 하는 전기로의 바닥 구조체.The insulating member has a bottom structure of the electric furnace characterized in that it comprises a fourth insulating portion surrounding the inner peripheral surface of the lead discharge hole. 삭제delete 청구항 1에 있어서, The method according to claim 1, 상기 바닥 내화 벽체부재는 상기 바닥 외피부의 내측면을 감싸 보호하는 제 1 내화벽부와;The bottom fireproof wall member comprises: a first fireproof wall portion surrounding and protecting the inner surface of the bottom skin portion; 상기 전극 장착부의 내측면을 감싸도록 장착되는 제 2 내화벽부를 포함한 것을 특징으로 하는 전기로의 바닥 구조체.Floor structure of an electric furnace characterized in that it comprises a second fireproof wall portion mounted to surround the inner surface of the electrode mounting portion. 삭제delete 삭제delete
KR20090103216A 2009-10-29 2009-10-29 The Bottom Structure of Electric furnace KR101185235B1 (en)

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