WO2012040941A1 - Siphon tapping device for blast furnace iron-making - Google Patents

Siphon tapping device for blast furnace iron-making Download PDF

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Publication number
WO2012040941A1
WO2012040941A1 PCT/CN2010/077674 CN2010077674W WO2012040941A1 WO 2012040941 A1 WO2012040941 A1 WO 2012040941A1 CN 2010077674 W CN2010077674 W CN 2010077674W WO 2012040941 A1 WO2012040941 A1 WO 2012040941A1
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WO
WIPO (PCT)
Prior art keywords
blast furnace
iron
furnace
tap
hole
Prior art date
Application number
PCT/CN2010/077674
Other languages
French (fr)
Chinese (zh)
Inventor
周久乐
Original Assignee
Zhou Jiule
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 Zhou Jiule filed Critical Zhou Jiule
Publication of WO2012040941A1 publication Critical patent/WO2012040941A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • 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
    • F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
    • F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working
    • 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
    • F27D3/14—Charging or discharging liquid or molten material
    • F27D3/145—Runners therefor
    • 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
    • F27D3/1509—Tapping equipment
    • F27D3/1518—Tapholes
    • 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
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools
    • 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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof

Definitions

  • the invention relates to a blast furnace ironmaking and iron tapping device, in particular to a blast furnace ironmaking siphon tapping device.
  • the method of siphoning iron has been widely used in the process of ironing in the original iron furnace.
  • the method of siphoning iron has never been used.
  • This patent proposes a method of siphoning iron from an iron furnace, which is transplanted into the blast furnace operation process, especially in the process of iron extraction from a high-pressure coal powder blast furnace.
  • the present invention provides a blast furnace ironmaking siphon iron discharging device.
  • the invention is applicable to an iron making process in which the iron production amount in the blast furnace is greater than or equal to 60 tons/hour.
  • the blast furnace iron-steaming iron discharging device of the present invention comprises a blast furnace, characterized in that a blast furnace water conveying channel is arranged along the tapping port of the furnace body, and the tapping port of the blast furnace passes through the blast furnace water conveying channel and a forehearth phase Connection, the upper part of the front furnace is provided with an iron outlet, and a tapping machine is respectively arranged at the blast furnace tap and the front furnace tap.
  • the liquid level of the forehearth molten iron is directly related to the liquid level in the blast furnace and also to the top coal pressure. According to the above parameters, the height of the tap hole of the front furnace can be determined.
  • the device can continuously produce iron, or can open an iron outlet at a proper position below the molten iron surface, and concentrate the iron on time.
  • the tapping method is the same as that of the blast furnace.
  • the invention is particularly suitable for a blast furnace with a gas pressure greater than 0.2 mpa during operation, and is particularly suitable for a high pressure operation process of a gas pure oxygen blast furnace or a pulverized coal pure oxygen blast furnace.
  • Figure 1 is a schematic view showing the structure of an embodiment of the present invention. detailed description
  • the utility model relates to a blast furnace iron-making siphon iron discharging device, which comprises a blast furnace 1, a front furnace 4, a blast furnace steel water passage 3, a blast furnace 1 is provided with an iron outlet 6, and a taphole of the blast furnace 1 passes through the blast furnace water supply passage 3 and the front furnace 4 Connected to each other, the upper part of the front furnace 4 is provided with a taphole 7.
  • the blast furnace water transfer passage and the front furnace are composed of a steel plate shell and a refractory inner shell.
  • a tapping machine 2 and a tapping machine 5 are respectively arranged at the blast furnace tap 6 and the fore furnace tap.
  • the parameters of each part are as follows:
  • the diameter of the front furnace is: 3m ;
  • the height of the furnace body is: 3m ;
  • the molten iron level is 1.5 meters above the center line of the taphole in the furnace;
  • the slag level is 0.3 m high
  • the front furnace liquid level is higher than 11.428m, and the iron can be continuously discharged. At the same time, an iron mouth can be opened under the tap hole position to concentrate the iron on time.

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)
  • Manufacture Of Iron (AREA)

Abstract

A siphon tapping device for blast furnace iron-making comprises a blast furnace(1) and a molten iron conveying passage(3) set along the direction of tap-hole(6) of the blast furnace. The tap-hole (6) of the blast furnace connects with a forehearth (4) through the molten iron conveying passage (3). A forehearth tap-hole (7) is set at the upper lateral side of the forehearth (4). Tapping machines (2, 5) are set at the tap-hole (6) of the blast furnace and the tap-hole (7) of the forethearth respectively.

Description

一种高炉炼铁虹吸出铁装置 技术领域  Blast furnace ironmaking siphon iron discharging device
本发明涉及一种高炉炼铁、 出铁装置， 特别是涉及一种高炉炼铁虹吸出铁 装置。  The invention relates to a blast furnace ironmaking and iron tapping device, in particular to a blast furnace ironmaking siphon tapping device.
技术背景  technical background
虹吸出铁的方法， 在原有的化铁炉化铁过程中， 曾经得到过广泛的利用。 但是在高炉炼铁发展史上还从未采用过虹吸出铁的方法。 本专利提出将化铁炉 虹吸出铁方法， 移植到高炉操作过程中， 尤其是高压煤粉高炉出铁过程中。  The method of siphoning iron has been widely used in the process of ironing in the original iron furnace. However, in the history of the development of blast furnace ironmaking, the method of siphoning iron has never been used. This patent proposes a method of siphoning iron from an iron furnace, which is transplanted into the blast furnace operation process, especially in the process of iron extraction from a high-pressure coal powder blast furnace.
发明内容  Summary of the invention
为了解决高压煤气和纯氧高炉炼铁出铁的稳定性， 提高高炉作业率水平， 本发明提供一种高炉炼铁虹吸出铁装置。  In order to solve the stability of high-pressure gas and pure oxygen blast furnace ironmaking iron and improve the blast furnace operating rate level, the present invention provides a blast furnace ironmaking siphon iron discharging device.
采用的技术方案是：  The technical solution adopted is:
本发明适用于高炉小时产铁量大于或等于 60吨 /小时的炼铁工艺。本发明的 高炉炼铁虹吸出铁装置， 包括高炉、 其特征是沿炉体的出铁口方向设置一高炉 输铁水通道， 高炉的出铁口通过所述的高炉输铁水通道与一前炉相连接， 前炉 的侧上部开设有出铁口， 高炉出铁口和前炉出铁口处分别设置有出铁机。  The invention is applicable to an iron making process in which the iron production amount in the blast furnace is greater than or equal to 60 tons/hour. The blast furnace iron-steaming iron discharging device of the present invention comprises a blast furnace, characterized in that a blast furnace water conveying channel is arranged along the tapping port of the furnace body, and the tapping port of the blast furnace passes through the blast furnace water conveying channel and a forehearth phase Connection, the upper part of the front furnace is provided with an iron outlet, and a tapping machine is respectively arranged at the blast furnace tap and the front furnace tap.
本发明高炉虹吸出铁装置的工作原理为： 前炉铁水液面高度 h 由炉顶 煤气压力 炉渣液面高度形成静压力 P s= P s*h s， 铁水液面距铁口中心线高 度形成的压力 p铁 = P i**h铁， 三部分组成， 贝 iJ P=Pi+p s+p铁 = P tt*h前液， 则前炉液 ffi rtiit h前液 = (pi+ P 渣 *h渣 + P 铁 h铁） / P 铁 The working principle of the blast furnace siphon iron discharging device of the invention is as follows: the liquid level h of the front furnace molten iron is formed by the liquid level of the top gas pressure furnace slag forming a static pressure P s = P s*h s , and the molten iron liquid surface is formed at a height from the center line of the iron mouth. Pressure p iron = P i**h iron, three-part composition, shell iJ P = Pi + p s + p iron = P tt * h pre-liquid, then pre-furnace liquid ffi rtiit h pre-liquid = (pi + P slag * h slag + P iron h iron) / P iron
由上式可见前炉铁水液面高度直接和高炉内液面高度相关联， 也和炉顶煤 气压力相关联。 根据以上参数即可确定前炉的出铁口的高度。  It can be seen from the above formula that the liquid level of the forehearth molten iron is directly related to the liquid level in the blast furnace and also to the top coal pressure. According to the above parameters, the height of the tap hole of the front furnace can be determined.
该装置可以连续不断出铁， 也可在预知铁水液面下方适当位置开一出铁口， 按时集中出铁， 出铁方式和高炉相同。  The device can continuously produce iron, or can open an iron outlet at a proper position below the molten iron surface, and concentrate the iron on time. The tapping method is the same as that of the blast furnace.
本发明所述的虹吸出铁方法和设备具有如下特点：  The method and device for siphoning iron according to the present invention have the following characteristics:
1、 可以在高炉炼铁的过程中连续、 稳定的出铁。  1. Continuous and stable tapping in the process of ironmaking in blast furnace.
2、可以同炼钢相配合，减少炼钢过程中混铁炉工序， 使建设投资大幅降低， 同时也使炼钢的能耗大幅降低。  2. It can be combined with steelmaking to reduce the process of mixing iron furnaces in the steelmaking process, which greatly reduces the construction investment and also greatly reduces the energy consumption of steelmaking.
3、 本发明特别适合于操作过程中， 煤气压力大于 0.2mpa的高炉， 尤其适 用于煤气纯氧高炉或煤粉纯氧高炉的高压操作工艺。  3. The invention is particularly suitable for a blast furnace with a gas pressure greater than 0.2 mpa during operation, and is particularly suitable for a high pressure operation process of a gas pure oxygen blast furnace or a pulverized coal pure oxygen blast furnace.
附图说明  DRAWINGS
图 1是本发明一种实施例的结构示意图。 具体实施方式 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of an embodiment of the present invention. detailed description
一种高炉炼铁虹吸出铁装置， 包括高炉 1、 前炉 4、 高炉输铁水通道 3， 高 炉 1上设有出铁口 6， 高炉 1的出铁口通过高炉输铁水通道 3同前炉 4相连接， 前炉 4侧上部设有出铁口 7。高炉输铁水通道及前炉均由钢板炉壳和耐火材料内 壳构成。在高炉出铁口 6和前炉出铁口 7处分别设有出铁机 2和出铁机 5。各部 分参数如下：  The utility model relates to a blast furnace iron-making siphon iron discharging device, which comprises a blast furnace 1, a front furnace 4, a blast furnace steel water passage 3, a blast furnace 1 is provided with an iron outlet 6, and a taphole of the blast furnace 1 passes through the blast furnace water supply passage 3 and the front furnace 4 Connected to each other, the upper part of the front furnace 4 is provided with a taphole 7. The blast furnace water transfer passage and the front furnace are composed of a steel plate shell and a refractory inner shell. A tapping machine 2 and a tapping machine 5 are respectively arranged at the blast furnace tap 6 and the fore furnace tap. The parameters of each part are as follows:
前炉直径为： 3m; The diameter of the front furnace is: 3m ;
炉身高度为： 3m; The height of the furnace body is: 3m ;
高炉出铁口高度： +8.400m;  Blast furnace tap height: +8.400m;
炉顶压力 0.3mpa;  Top pressure 0.3mpa;
铁水液面在炉内高于出铁口中心线 1.5米；  The molten iron level is 1.5 meters above the center line of the taphole in the furnace;
渣液面高 0.3米；  The slag level is 0.3 m high;
则前炉铁水液面高度 H前液 =0.1mpa÷6.9t/m3+1.5m+ P 渣 / P 铁 *0.3m=3.028m; 实际高度 1 髓=8.4+3.028=11.428111。 Then the front furnace molten iron level H before liquid = 0.1mpa ÷ 6.9t / m 3 + 1.5m + P slag / P iron * 0.3m = 3.028m ; actual height 1 medulla = 8.4 + 3.028 = 11.4481.
即前炉液面高于 11.428m即可连续出铁， 同时也可在出铁口位置下方开一出 铁口， 按时集中出铁。  That is, the front furnace liquid level is higher than 11.428m, and the iron can be continuously discharged. At the same time, an iron mouth can be opened under the tap hole position to concentrate the iron on time.

Claims

权 利 要 求 Rights request
1、 一种高炉炼铁虹吸出铁装置， 包括高炉、 其特征是沿炉体的出铁口方向 设置一高炉输铁水通道， 高炉的出铁口通过所述的高炉输铁通道与一前炉相连 接， 前炉的侧上部开设有出铁口， 高炉出铁口和前炉出铁口处分别设置有出铁 机。 1. A blast furnace iron-making siphon iron-out device, comprising a blast furnace, characterized in that a blast furnace water supply passage is arranged along a taphole of the furnace body, and the taphole of the blast furnace passes through the blast furnace iron passage and the front furnace Connected, the upper part of the front furnace is provided with a taphole, and the tapping machine is provided at the blast furnace tap and the front furnace tap.
PCT/CN2010/077674 2010-09-27 2010-10-12 Siphon tapping device for blast furnace iron-making WO2012040941A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010102928115A CN102417942A (en) 2010-09-27 2010-09-27 Blast-furnace ironmaking siphon tapping apparatus
CN201010292811.5 2010-09-27

Publications (1)

Publication Number Publication Date
WO2012040941A1 true WO2012040941A1 (en) 2012-04-05

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5168613A (en) * 1974-12-12 1976-06-14 Bizukumuni Usutafu Funtonitsuk
US4036479A (en) * 1975-05-20 1977-07-19 Centre Technique Des Industries De La Fonderie Cupola furnace
JPS59145713A (en) * 1983-02-08 1984-08-21 Nippon Kokan Kk <Nkk> Siphon type slag cutter for blast furnace
CN1072725A (en) * 1992-10-09 1993-06-02 李德基 The tapping device of blast furnace enclosed iron-channel of belt sliding door
JPH05285639A (en) * 1992-04-09 1993-11-02 Nippon Steel Corp Transfer apparatus of molten metal
JPH09125117A (en) * 1995-08-31 1997-05-13 Man Gutehoffnungshuette Ag Apparatus for feeding liquid metal in foundry of shaft furnace and method for operating this apparatus
CN101598500A (en) * 2009-06-30 2009-12-09 莱芜钢铁集团有限公司 A kind of continuous steel furnace slag-free tapping hole
CN101603105A (en) * 2009-07-07 2009-12-16 沈阳东方钢铁有限公司 A kind of siphon tapping device for blast furnace ironmaking

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5168613A (en) * 1974-12-12 1976-06-14 Bizukumuni Usutafu Funtonitsuk
US4036479A (en) * 1975-05-20 1977-07-19 Centre Technique Des Industries De La Fonderie Cupola furnace
JPS59145713A (en) * 1983-02-08 1984-08-21 Nippon Kokan Kk <Nkk> Siphon type slag cutter for blast furnace
JPH05285639A (en) * 1992-04-09 1993-11-02 Nippon Steel Corp Transfer apparatus of molten metal
CN1072725A (en) * 1992-10-09 1993-06-02 李德基 The tapping device of blast furnace enclosed iron-channel of belt sliding door
JPH09125117A (en) * 1995-08-31 1997-05-13 Man Gutehoffnungshuette Ag Apparatus for feeding liquid metal in foundry of shaft furnace and method for operating this apparatus
CN101598500A (en) * 2009-06-30 2009-12-09 莱芜钢铁集团有限公司 A kind of continuous steel furnace slag-free tapping hole
CN101603105A (en) * 2009-07-07 2009-12-16 沈阳东方钢铁有限公司 A kind of siphon tapping device for blast furnace ironmaking

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LI DEJI: "Sliding Nozzle Valve-sprue System for BF Tapping", IRON AND STEEL, vol. 29, no. 7, July 1994 (1994-07-01), pages 22 *

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