KR200451930Y1 - Oxygen Supply Apparatus of Electric Furnace - Google Patents

Oxygen Supply Apparatus of Electric Furnace Download PDF

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KR200451930Y1
KR200451930Y1 KR2020080009961U KR20080009961U KR200451930Y1 KR 200451930 Y1 KR200451930 Y1 KR 200451930Y1 KR 2020080009961 U KR2020080009961 U KR 2020080009961U KR 20080009961 U KR20080009961 U KR 20080009961U KR 200451930 Y1 KR200451930 Y1 KR 200451930Y1
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oxygen
electric furnace
supply pipe
oxygen supply
pipe member
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KR2020080009961U
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KR20100001225U (en
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이상옥
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현대제철 주식회사
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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
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the 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; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/20—Arrangements of heating devices
    • 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
    • F27B3/22—Arrangements of air or gas supply devices
    • F27B3/225—Oxygen blowing
    • 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
    • C21C2250/02—Hot oxygen
    • 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)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

본 고안은 전기로의 산소 공급 장치에 관한 것으로, 단부가 전기로(1)의 내부로 관통되게 결합하여 전기로(1) 내부로 산소를 취입하는 산소 공급관부재(10)와, 전기로(10) 내부로 취입되는 산소를 저장하며, 산소 공급관부재(10)와 연결되어 산소 공급관부재(10)로 산소를 공급하는 산소 저장 탱크(20)와, 상기 산소 공급관부재(10)에 장착되어 산소 공급관부재(10)의 관로를 통해 전기로(1) 내부로 취입되는 산소를 가열하는 가열 기기(30)를 포함한 것이다.The present invention relates to an oxygen supply device of an electric furnace, the oxygen supply pipe member 10 and the electric furnace (10) for injecting oxygen into the electric furnace (1) by coupling the end penetrates into the electric furnace (1) Oxygen storage tank 20 for storing the oxygen blown into the inside, and is connected to the oxygen supply pipe member 10 to supply oxygen to the oxygen supply pipe member 10, the oxygen supply pipe member 10 is mounted to the oxygen supply pipe member 10 It includes the heating device 30 for heating the oxygen blown into the electric furnace (1) through the pipeline of (10).

본 고안은 전기로(1) 내부로 건조된 산소를 공급함으로써, 전기로(1) 내의 수분으로 인한 용해 작업의 손실을 방지하고, 용해된 용강 내에 불순물이 증대되는 것을 방지하는 효과가 있는 것이다.The present invention provides an effect of preventing the loss of the dissolution operation due to moisture in the furnace 1 and preventing the increase of impurities in the molten steel by supplying dried oxygen into the furnace 1.

따라서, 전기로(1)로 제조되는 용강의 품질을 향상시키고, 용해 작업 시 소요되는 시간을 줄일 수 있는 것이다. Therefore, it is possible to improve the quality of the molten steel produced by the electric furnace 1, and to reduce the time required for the melting operation.

Description

전기로의 산소 공급 장치{Oxygen Supply Apparatus of Electric Furnace}Oxygen Supply Apparatus of Electric Furnace

본 고안은 전기로의 산소 공급 장치에 관한 것으로 더 상세하게는 산소 공급 시 건조 공기를 공급하여 용해된 용강의 품질을 향상시킬 수 있도록 고안된 것이다.The present invention relates to an oxygen supply device for an electric furnace, and more particularly, is designed to improve the quality of molten steel by supplying dry air during oxygen supply.

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. .

도 1에서 도시한 바와 같이 전기로(1)에는 용해 작업 시 스크랩의 용융을 촉진시키도록 산소를 공급하는 산소 공급관(2)과, 탈산, 탈황 및 탈류를 하기 위해서 부원료(Fe-Si, Ch-cr, CaCO3, CaO, MO-oxide)를 공급하기 위한 부원료 공급관(3)의 단부가 내부로 삽입되어 위치된다.As shown in FIG. 1, the electric furnace 1 has an oxygen supply pipe 2 for supplying oxygen to promote melting of scrap during melting operation, and secondary raw materials (Fe-Si, Ch- for deoxidation, desulfurization, and dehydration). The ends of the sub-raw feed pipes 3 for supplying cr, CaCO 3, CaO, and MO-oxide are inserted and positioned inside.

특히, 산소는 용해 작업 시 전기로 내에서 필요한 산소를 공급하여 용해 작업을 원활하게 하고, 용해 작업의 속도를 빠르게 하여 생산성을 증대시키는 효과가 있는 것이다.In particular, oxygen is effective in increasing the productivity by supplying the necessary oxygen in the electric furnace during the dissolution operation to facilitate the dissolution operation, speed up the dissolution operation.

그러나 상기한 바와 같이 산소 공급관(2)을 통해 공급되는 산소는 내부에 수 분을 일부 포함하고 있어 용해되는 용강의 품질 및 용해 작업의 효율을 저하시키는 문제점이 있었던 것이다.However, as described above, the oxygen supplied through the oxygen supply pipe 2 includes some moisture therein, thereby degrading the quality of molten steel and the efficiency of melting operation.

본 고안의 목적은 전기로 내에 건조된 산소를 공급하여 용강의 품질 및 용해 작업의 효율을 증대시키는 전기로의 산소 공급 장치를 제공하는 데 있다.It is an object of the present invention to provide an oxygen supply apparatus for an electric furnace that supplies oxygen dried in an electric furnace to increase the quality of molten steel and the efficiency of melting operation.

이러한 본 고안의 목적은 단부가 전기로의 내부로 관통되게 결합하여 전기로 내부로 산소를 취입하는 산소 공급관부재와;An object of the present invention is the oxygen supply pipe member for injecting oxygen into the electric furnace by coupling the end penetrates into the electric furnace;

전기로 내부로 취입되는 산소를 저장하며, 산소 공급관부재와 연결되어 산소 공급관부재로 산소를 공급하는 산소 저장 탱크와;An oxygen storage tank that stores oxygen blown into the electric furnace and is connected to the oxygen supply pipe member to supply oxygen to the oxygen supply pipe member;

상기 산소 공급관부재에 장착되어 산소 공급관부재의 관로를 통해 전기로 내부로 취입되는 산소를 가열하는 가열 기기를 포함하며,
상기 가열 기기는 전류가 흘러 열을 발생시키는 전기 히터와, 상기 산소 저장 탱크 내의 수분을 감지하는 습도 센서와, 상기 전기 히터와, 습도 센서에 연계되어 전기 히터의 작동을 제어하는 히터 제어부를 포함한 전기로의 산소 공급 장치를 제공함으로써 해결되는 것이다.And a heating device mounted to the oxygen supply pipe member to heat oxygen blown into the electric furnace through a pipe of the oxygen supply pipe member.
The heating apparatus includes an electric heater including an electric heater through which electric current flows to generate heat, a humidity sensor for sensing moisture in the oxygen storage tank, a heater controller connected to the electric heater, and a humidity sensor to control the operation of the electric heater. It is solved by providing an oxygen supply device.

본 고안은 전기로 내부로 건조된 산소를 공급함으로써, 전기로 내의 수분으로 인한 용해 작업의 손실을 방지하고, 용해된 용강 내에 불순물이 증대되는 것을 방지하는 효과가 있는 것이다.The present invention has an effect of preventing the loss of dissolution operation due to moisture in the electric furnace by preventing the increase of impurities in the molten steel by supplying the oxygen dried in the furnace.

따라서, 전기로로 제조되는 용강의 품질을 향상시키고, 용해 작업 시 소요되는 시간을 줄일 수 있는 것이다. Therefore, it is possible to improve the quality of the molten steel produced by the electric furnace, and to reduce the time required for the melting operation.

본 고안의 바람직한 실시 예를 첨부된 도면에 의하여 상세히 설명하면 다음 과 같다.Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 고안의 구성을 도시한 개략도로서, 산소 공급관부재에 가열 기기가 구비되어 산소 저장 탱크로부터 공급되는 산소가 가열 기기를 통과하여 전기로 내부로 취입되도록 한 예를 나타내고 있다.FIG. 2 is a schematic view showing the structure of the present invention, in which an oxygen supply pipe member is provided with a heating device such that oxygen supplied from an oxygen storage tank is blown into the electric furnace through the heating device.

이하, 도 2에서 도시한 바와 같이 전기로(1)는 내부로 스크랩을 장입하고, 용해가 이루어지는 공간부가 형성되며, 하부 몸체부(1b)와 상부 몸체부(1a)로 구분되어 하부 몸체부(1b)의 내측벽에는 외벽을 보호하도록 내화 연와로 축조된 내화 벽체(4)가 형성되고, 상부 몸체부(1a)의 내측벽에는 내부로 냉각수가 순환되어 외벽을 보호하는 냉각 패널부재(5)가 장착되는 것이 일반적이다.Hereinafter, as shown in FIG. 2, the electric furnace 1 is charged with scrap into the inside, and a space part in which melting is formed is formed, and is divided into a lower body part 1b and an upper body part 1a, and thus the lower body part ( On the inner wall of 1b), a fireproof wall 4 constructed with refractory wires is formed to protect the outer wall, and on the inner wall of the upper body part 1a, cooling water circulates inside to protect the outer wall. It is common to be equipped.

그리고 상기 전기로(1)의 상부에는 개방된 상부를 커버하며 아크열을 발생시키는 복수의 전극봉(6a)이 구비한 전기로 커버부재(6)가 결합된다.In addition, an electric furnace cover member 6 is coupled to an upper portion of the electric furnace 1 and includes a plurality of electrode rods 6a that cover an open upper portion and generate arc heat.

상기 전기로 커버부재(6)에는 도시하지는 않았지만, 용해과정에서 발생되는 다량의 폐가스와 먼지 등을 배출하는 배기관이 연결되는 것으로 상기한 전기로(1)는 공지의 것으로 더 상세한 설명은 생략함을 밝혀둔다.Although not shown, the electric furnace cover member 6 is connected to an exhaust pipe for discharging a large amount of waste gas and dust generated during the dissolution process. Reveal.

본 발명의 산소 공급관부재(10)는 상기 전기로(1)의 일측면에서 관통되게 결합하여 단부가 전기로(1)의 내부로 돌출되게 설치된다.Oxygen supply pipe member 10 of the present invention is installed so that the end is protruded into the interior of the electric furnace 1 by coupling through one side of the electric furnace (1).

또한 상기 산소 공급관부재(10)는 고압의 산소를 저장하는 산소 저장 탱크(20)에서 전기로(1)의 내부로 돌출되게 연장되는 것으로, 산소 저장 탱크(20)에 저장된 산소를 공급받아 전기로(1)의 내부로 취입하는 것이다.In addition, the oxygen supply pipe member 10 extends from the oxygen storage tank 20 for storing high pressure oxygen to protrude into the electric furnace 1, and receives oxygen stored in the oxygen storage tank 20 to receive the electric furnace. It is blown into the inside of (1).

또 상기 산소 공급관부재(10)에는 산소 저장 탱크(20)로부터 공급받아 관로 를 통과하는 산소를 가열하는 가열 기기(30)가 장착된다.In addition, the oxygen supply pipe member 10 is equipped with a heating device 30 for heating the oxygen flowing through the pipe received from the oxygen storage tank 20.

상기 산소 공급관부재(10)는 산소 저장 탱크(20)에서부터 가열 기기(30)까지 연장된 제 1 공급관(11)와, 가열 기기(30)에서 전기로(1)의 내부로 연장되어 전기로(1)의 내부로 돌출되는 제 2 공급관(12)를 포함한다.The oxygen supply pipe member 10 includes a first supply pipe 11 extending from the oxygen storage tank 20 to the heating device 30, and extends from the heating device 30 to the inside of the electric furnace 1. And a second supply pipe 12 protruding into 1).

상기 가열 기기(30)는 내부에 저항 코일을 포함한 것으로, 전류를 저항 코일로 흐르게 하여 열을 발생시키는 전기 히터(31)를 사용하는 것을 기본으로 한다.The heating device 30 includes a resistance coil therein, and basically uses an electric heater 31 that generates heat by flowing a current through the resistance coil.

상기 가열 기기(30)는 전류가 흘러 열을 발생시키는 전기 히터(31)와, 상기 산소 저장 탱크(20) 내의 수분을 감지하는 습도 센서(32)와, 상기 전기 히터(31)와, 습도 센서(32)에 연계되어 전기 히터(31)의 작동을 제어하는 히터 제어부(33)를 포함한다.The heating device 30 includes an electric heater 31 through which electric current flows to generate heat, a humidity sensor 32 for sensing moisture in the oxygen storage tank 20, the electric heater 31, and a humidity sensor. A heater control unit 33 is connected to the 32 and controls the operation of the electric heater 31.

즉, 산소는 산소 저장 탱크(20)로부터 제 1 공급관(11)을 통해 가열 기기(30)로 유입된 후 가열 기기(30)를 통과하면서 가열되어 건조된 후 제 2 공급관(12)을 통해 전기로(1) 내부로 취입되게 되는 것이다.That is, oxygen is introduced into the heating device 30 from the oxygen storage tank 20 through the first supply pipe 11, and then heated and dried while passing through the heating device 30, and then electricity is supplied through the second supply pipe 12. It is to be blown into the furnace (1).

상기한 바와 같이 본 고안은 산소에 포함된 수분을 가열 기기(30)를 통해 제거하여 산소를 공급함으로써, 산소 내에 포함된 수분으로 인한 용강 내의 이물질 생성, 전기로(1) 내의 온도 저하 등의 문제점을 방지할 수 있는 것이다.As described above, the present invention removes moisture contained in oxygen through the heating device 30 to supply oxygen, thereby generating foreign substances in molten steel due to moisture contained in oxygen, and lowering the temperature in the electric furnace 1. This can be prevented.

또한, 본 고안의 가열 기기(30)는 습도 센서(32)로 산소 저장 탱크(20) 내부에서 산소에 포함된 수분의 양을 감지하여 히터 제어부(33)를 통해 전기 히터(31)의 작동을 제어하여 수분에 따라 가열 온도 및 산소의 유속을 조정함으로서 효율적인 건조를 가능하게 하는 것이다.In addition, the heating device 30 of the present invention detects the amount of moisture contained in the oxygen in the oxygen storage tank 20 by the humidity sensor 32 to operate the electric heater 31 through the heater control unit 33. By controlling the heating temperature and the flow rate of oxygen in accordance with the moisture to enable efficient drying.

본 고안은 상기한 실시 예에 한정되는 것이 아니라, 본 고안의 요지에 벗어나지 않는 범위에서 다양하게 변경하여 실시할 수 있으며 이는 본 고안의 구성에 포함됨을 밝혀둔다.The present invention is not limited to the above-described embodiment, it can be carried out in a variety of changes within the scope not departing from the gist of the present invention, which is found to be included in the configuration of the present invention.

도 1은 종래의 전기로의 구성을 개략적으로 도시한 단면도1 is a cross-sectional view schematically showing the configuration of a conventional electric furnace

도 2는 본 고안의 구성을 도시한 개략도Figure 2 is a schematic diagram showing the configuration of the subject innovation

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

1 : 전기로 10 : 산소 공급관부재1: electric furnace 10: oxygen supply pipe member

20 : 산소 저장 탱크 30 : 가열 기기20 oxygen storage tank 30 heating device

31 : 전기 히터 32 : 습도 센서31: electric heater 32: humidity sensor

33 : 히터 제어부33: heater control unit

Claims (2)

단부가 전기로의 내부로 관통되게 결합하여 전기로 내부로 산소를 취입하는 산소 공급관부재와;An oxygen supply pipe member coupled to the end portion to penetrate the inside of the electric furnace to blow oxygen into the electric furnace; 전기로 내부로 취입되는 산소를 저장하며, 산소 공급관부재와 연결되어 산소 공급관부재로 산소를 공급하는 산소 저장 탱크와;An oxygen storage tank that stores oxygen blown into the electric furnace and is connected to the oxygen supply pipe member to supply oxygen to the oxygen supply pipe member; 상기 산소 공급관부재에 장착되어 산소 공급관부재의 관로를 통해 전기로 내부로 취입되는 산소를 가열하는 가열 기기를 포함하며,And a heating device mounted to the oxygen supply pipe member to heat oxygen blown into the electric furnace through a pipe of the oxygen supply pipe member. 상기 가열 기기는 전류가 흘러 열을 발생시키는 전기 히터와, 상기 산소 저장 탱크 내의 수분을 감지하는 습도 센서와, 상기 전기 히터와, 습도 센서에 연계되어 전기 히터의 작동을 제어하는 히터 제어부를 포함하는 것을 특징으로 하는 전기로의 산소 공급 장치.The heating device includes an electric heater in which current flows to generate heat, a humidity sensor for sensing moisture in the oxygen storage tank, a heater controller connected to the electric heater and a humidity sensor to control an operation of the electric heater. An oxygen supply device for an electric furnace, characterized in that. 삭제delete
KR2020080009961U 2008-07-25 2008-07-25 Oxygen Supply Apparatus of Electric Furnace KR200451930Y1 (en)

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KR200451930Y1 true KR200451930Y1 (en) 2011-01-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669319A (en) * 1979-11-05 1981-06-10 Hisahiro Hirasaka Melting promotion method and apparatus in arc type electric furnace for steel making
US4827486A (en) 1986-08-27 1989-05-02 Klockner Cra Technologie Gmbh Process for increasing the energy input in electric arc furnaces
KR100239180B1 (en) 1997-06-18 2000-01-15 공용조 Incineration method and its equipment using oxygen added fresh air

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669319A (en) * 1979-11-05 1981-06-10 Hisahiro Hirasaka Melting promotion method and apparatus in arc type electric furnace for steel making
US4827486A (en) 1986-08-27 1989-05-02 Klockner Cra Technologie Gmbh Process for increasing the energy input in electric arc furnaces
KR100239180B1 (en) 1997-06-18 2000-01-15 공용조 Incineration method and its equipment using oxygen added fresh air

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