JPH01142008A - Operation of blast furnace - Google Patents
Operation of blast furnaceInfo
- Publication number
- JPH01142008A JPH01142008A JP30028587A JP30028587A JPH01142008A JP H01142008 A JPH01142008 A JP H01142008A JP 30028587 A JP30028587 A JP 30028587A JP 30028587 A JP30028587 A JP 30028587A JP H01142008 A JPH01142008 A JP H01142008A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- gas
- height
- blast furnace
- blast
- 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.)
- Pending
Links
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000011017 operating method Methods 0.000 claims description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims 1
- 238000004868 gas analysis Methods 0.000 claims 1
- 238000004817 gas chromatography Methods 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000004043 responsiveness Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 31
- 239000002184 metal Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000002844 melting Methods 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶鉱炉及びシャフト炉等の高炉の操業を安定
に行うために炉内溶融帯の高さレベルを制御する方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for controlling the height level of a molten zone in a blast furnace in order to stably operate a blast furnace such as a blast furnace and a shaft furnace.
本出願人らは、高さ方向に配置した複数のガスサンプリ
ング装置と圧力検出装置の情報から高炉内の溶融帯の位
置や炉内圧力などを求める乙とにより炉内の操業状況を
検出する方法を与えた（特願昭６２−０４０３４９号及
び特願昭６２−０４０３５０号）。The present applicants have proposed a method for detecting the operating status inside a blast furnace by determining the position of the molten zone in the blast furnace, the pressure inside the furnace, etc. from information from a plurality of gas sampling devices arranged in the height direction and a pressure detection device. (Japanese Patent Application No. 62-040349 and Japanese Patent Application No. 62-040350).
一方、高炉の炉熱を制御するための制御方法は、大きく
別けて２つある。On the other hand, there are broadly two control methods for controlling the furnace heat of a blast furnace.
第１は、炉内の溶銑温度を測定し、数式モデルにより目
標溶銑温度との偏差を求め、それに基づきフィードバッ
ク制御をする方法である。The first method is to measure the temperature of hot metal in the furnace, calculate the deviation from the target hot metal temperature using a mathematical model, and perform feedback control based on the deviation.
第２は、炉外に排出された溶銑中のケイ素濃度を測定し
、炉下部における定常モデルによりフィードバック制御
をする方法である。The second method is to measure the silicon concentration in hot metal discharged outside the furnace and perform feedback control using a steady-state model in the lower part of the furnace.
しかしながら、第１の方法では、炉内の溶銑温度を測定
した後に制御をするため、操作量に対する状態量の応答
遅れが大きく、さらに、高炉内では、常に何らかの外乱
が生じており、これらの外乱に対する応答も遅れ時間が
存在し、動的制御が困難である。However, in the first method, the temperature of the hot metal in the furnace is measured and then controlled, so there is a large response delay of the state quantity to the manipulated variable.Furthermore, some kind of disturbance always occurs in the blast furnace, and these disturbances There is also a delay time in the response, making dynamic control difficult.
第２の方法では、第３図に示すごとく、ケイ素濃度と溶
銑温度とは相関関係があるものの、その傾向または絶対
値は必ずしも同一ではない。さらに、第４図に示すよう
に、炉内状況のいかんによってはケイ素濃度が高いにも
かかわらず、溶銑温度が低いということ（図中、矢印）
もあり、ケイ素濃度制御によってのみ、高炉の炉熱を制
御することは困難である。In the second method, as shown in FIG. 3, although there is a correlation between silicon concentration and hot metal temperature, their trends or absolute values are not necessarily the same. Furthermore, as shown in Figure 4, depending on the situation inside the furnace, the hot metal temperature may be low despite the high silicon concentration (arrow in the figure).
Therefore, it is difficult to control the furnace heat of a blast furnace only by controlling the silicon concentration.
なお、第３図は、ある高炉でのケイ素濃度と溶銑温度と
の相関関係を示す線図てあり、図中Ｏは高炉内をクリー
ニングした週、×・Δはその前後の週を□示す。第４図
はある３つの高炉での溶銑成分と溶銑温度の推移を示す
線図であり、・・０・Δは各々の高炉の値を示す。In addition, FIG. 3 is a diagram showing the correlation between silicon concentration and hot metal temperature in a certain blast furnace. In the diagram, O indicates the week in which the inside of the blast furnace was cleaned, and ×·Δ indicates the weeks before and after that. FIG. 4 is a diagram showing changes in hot metal components and hot metal temperature in three blast furnaces, where 0.Δ represents the value for each blast furnace.
従って、従来の第１、第２の方法では、安定な炉熱制御
が出来ないという問題点があった。Therefore, the conventional first and second methods have the problem that stable furnace heat control is not possible.
本発明は、かかる問題点に鑑みてなされたもので、炉内
の溶銑温度を安定に制御できる方法を提供するものであ
る。The present invention has been made in view of such problems, and provides a method for stably controlling the temperature of hot metal in a furnace.
本発明にかかわる高炉操業法は、炉内還元状態を求める
高さ方向に配置した複数のガスサンプリング装置とサン
プリングされたガスの分析装置と炉熱制御装置を備え、
前記ガス分析装置によって炉内の原料の溶融帯高さと炉
内状況を求め、前記溶融帯高さが設定レベルとなるよう
に、前記炉熱制御装置を制御するものである。The blast furnace operating method according to the present invention includes a plurality of gas sampling devices arranged in the height direction for determining the reduction state in the furnace, an analyzer for the sampled gas, and a furnace heat control device,
The height of the melting zone of the raw material in the furnace and the condition inside the furnace are determined by the gas analyzer, and the furnace heat control device is controlled so that the height of the melting zone is at a set level.
本発明においては、炉下部の熱的バランス及び溶銑、ス
ラグへの伝熱を支配している溶融帯の高さを検知し、そ
の高さレベルを保持制御することにより、溶銑温度を安
定に制御する。In the present invention, the temperature of the molten metal is stably controlled by detecting the height of the molten zone that governs the thermal balance in the lower part of the furnace and the heat transfer to the hot metal and slag, and controlling the height level to maintain it. do.
以下、本発明の一実施例を図面を使って説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の一実施例を示す構成図＋あり、（１
０）は高炉の炉壁である。また、ガスの検出及び成分の
分析を行う構成要素のうち、（１２）は炉体の高さ方向
に垂直に複数配饋薯れるとともに、炉壁（１０）を貫通
して炉内に挿入するように設置されたガス採取管であり
、炉頂から２０ｍ付近は、−定値の変化率の大きな部分
であり、誤差の少ない検出を行う上で、密な情報が必要
であるために、間隔を狭めて設置されている。FIG. 1 is a configuration diagram showing an embodiment of the present invention, and (1
0) is the furnace wall of the blast furnace. In addition, among the components for detecting gas and analyzing components, (12) are installed in multiple positions perpendicularly to the height direction of the furnace body, and are inserted into the furnace by penetrating the furnace wall (10). The area around 20m from the top of the furnace is where the rate of change in the constant value is large, and detailed information is required to perform detection with little error, so the interval is It is set narrowly.
また、最上段の採取管（１２）は、炉頂の原料装入位置
直下の近傍に配置されている。これは、炉頂のガス成分
が、操業状況を把握するための各データの初期値を算出
するための計算上重要な情報となるからであり、仮に最
上段の採取管（１２）が、炉頂の原料挿入位置から離れ
た位置に設置された場合には、炉頂のガス成分が採取管
（１２）に至までに変化し、誤差が太き（なってしまう
ためである。Further, the uppermost sampling pipe (12) is placed near the top of the furnace, directly below the raw material charging position. This is because the gas components at the top of the furnace are important information for calculating the initial values of each data to understand the operating status, and if the top sampling pipe (12) is This is because if it is installed at a position away from the raw material insertion position at the top, the gas components at the top of the furnace will change up to the sampling tube (12), resulting in a large error.
（１２ａ）はガス採取管（１２）に接続されたパージ用
窒素ガス供給管、（１４）は窒素ガスの背圧を測定し、
その測定値に応じて電気信号を出力する圧力変換濶、（
１Ｂ）はガス採取管（１２）に接続され、採取したガス
を後記分析装置（１８）に供給するためのサンプリング
管である。（１８）はフィルタボックスと粗ガス分析計
とを有するガスクロマトグラフィ等の分析装置である。(12a) is a purge nitrogen gas supply pipe connected to the gas sampling pipe (12), (14) measures the back pressure of nitrogen gas,
A pressure converter that outputs an electrical signal according to the measured value (
1B) is a sampling tube connected to the gas sampling tube (12) and for supplying the sampled gas to the analyzer (18) described later. (18) is an analysis device such as a gas chromatography device having a filter box and a crude gas analyzer.
分析装置（１８）の入力側はサンプリング管（ＩＢ）を
介してガス採取管（１２）に接続され、出力側は後記炉
熱制御装置（２０）に接続されている。The input side of the analyzer (18) is connected to a gas sampling tube (12) via a sampling tube (IB), and the output side is connected to a furnace heat control device (20) described later.
□他方、操業管理を行う構成要素のうち、炉熱制御装置
（２０）はプログラマブルコントローラ（２０ａ）と炉
頂装入装置（２０ｂ）によって構成され、分析装置（１
８）及び後記出力装置（２２）に接続されている。□On the other hand, among the components that perform operational management, the furnace heat control device (20) is composed of a programmable controller (20a) and a furnace top charging device (20b), and an analyzer (1).
8) and an output device (22) described later.
（２２）は炉熱制御装置（２０）に接続されるとともに
、炉内状況の測定データを出力表示するＣＲＴ等の出力
装置である。(22) is an output device, such as a CRT, which is connected to the furnace heat control device (20) and outputs and displays measured data on the inside of the furnace.
次に、上記のように構成された実施例の全体的な動作に
ついて説明する。Next, the overall operation of the embodiment configured as described above will be explained.
まず、炉壁（１０）の高さ方向に多段に設けるとともに
、炉内に挿入したガス採取管（１２）により炉内のガス
を採取し、サンプリング管（１６）によって分析装置（
１８）に送給する。各段のガス採取管（１２）には、窒
素ガス供給管（１２ａ）及び圧力変換器（１４）が各々
接続されており、窒素ガス供給管（１２ａ）からＮ２ガ
スの背圧を測定して、その測定値に応じた信号をも分析
装置（１８）に入力する。First, the gas inside the furnace is sampled using gas sampling tubes (12) installed in multiple stages in the height direction of the furnace wall (10) and inserted into the furnace, and the gas inside the furnace is collected using the sampling tube (16).
18). A nitrogen gas supply pipe (12a) and a pressure transducer (14) are connected to the gas sampling pipe (12) at each stage, and the back pressure of N2 gas is measured from the nitrogen gas supply pipe (12a). , a signal corresponding to the measured value is also input to the analyzer (18).
第２図は、炉壁ストックライン図（Ａ）と各サンゴリン
グ位置のある時間のガス反応率から求めた鉱石還元率分
布曲線図（Ｂ）である。図における還元率Ｒ６、ガス利
用率η。。は下記の様に求めた。FIG. 2 is a furnace wall stock line diagram (A) and an ore reduction rate distribution curve diagram (B) obtained from the gas reaction rate at a certain time at each coral ring position. Reduction rate R6 and gas utilization rate η in the figure. . was determined as follows.
なお、以下の式中に示される記号は次のものを表してい
る。Note that the symbols shown in the following formulas represent the following.
Ｗｇ： ガス流量（ＮｒｒＩ″／ｍ”ｍ１ｎ）■ｂ：
送風量 （ＮＩ′１１′７ｍ′ｍ１ｎ）ΔＯ：酸素移動
量（ｋｇ ／ ｍ’ ｍ１ｎ）ΔＣ：炭素移動量（ｋｇ
／、、’ ｍ１ｎ）ＣＯ：ガス中ＣＯ濃度 （％）
ＣＯ□：ガス中ＣＯ２濃度（％）
Ｎ２：ガス中Ｎ２濃度 （％）
（添字）
ｉ ： １段目 、ｎ ：炉頂、１ ：ボッシュ１ｎ：
入側 、Ｏｕｔ ：出側
初めに、１段目のガス採取管（１２）におけるある間隔
ΔＺの酸素バランスΔＯ１１炭素バランスΔＣＩを求め
ると次式のようになる。Wg: Gas flow rate (NrrI″/m″m1n) ■b:
Air flow rate (NI'11'7m'm1n) ΔO: Oxygen transfer amount (kg / m' m1n) ΔC: Carbon transfer amount (kg
/,,' m1n) CO: CO concentration in gas (%) CO□: CO2 concentration in gas (%) N2: N2 concentration in gas (%) (Subscript) i: 1st stage, n: furnace top, 1: Bosch 1n:
Inlet side, Out: Outlet side At the beginning, the oxygen balance ΔO11 carbon balance ΔCI at a certain interval ΔZ in the first stage gas sampling pipe (12) is calculated as follows.
Δ Ｏｌ＝ （Ｗｇ＋”” （ＣＯ＋Ｏ
ｕ官＋２ＣＯ２＋Ｏｕ電）２２．４
Ｗｇ＋”（Ｃ（Ｌ”＋２ＣＯ□ 、”）ｌ ・・■Δ
Ｃｒ−（Ｗｇ＋°” （ＧＯ＋””＋ＣＯ２＋””）２
２．４
Ｗｇ＋”（ＣＯ＋１″＋ ＣＯ２１′″）ｌ ■ここ
でＷｇｔ’はＮ２バランスより次式で表される。ΔOl= (Wg+”” (CO+O
U official+2CO2+Ou electric)22.4 Wg+”(C(L”+2CO□,”)l ・・■Δ
Cr-(Wg+°” (GO+””+CO2+””)2
2.4 Wg+"(CO+1"+CO21'")l ■Here, Wgt' is expressed by the following formula based on the N2 balance.
Ｗｇｔ’＝０．７９ＸＶｂ／ Ｎ ２＋’ −■ボッ
シュ−炉頂間では、■、■式は、
１６Ｘ０．７９ （ＣＯｒｌ。”＋２ＧＯ，Ｉｌ”’）
Σ △Ｏ、／ Ｖ ｂ −□ （□
ｉ＝１ ２２．４
Ｎ２ ｌｌ。ｕ′（Ｃ０１１ｎ＋２ＣＯ２□Ｉｎ）
一□）−■
Ｎ、、ｌ１１
１２ｘｏ、７９ （ＣＯ，ｌＯｕ’十 ＣＯ□
、ｏｕ會）Σ ΔＧ 、 ／ Ｖ ｂ ＝ −□ （
□ｉ”１ ２２．４
Ｎ２ ｎ。ｕ’（ＣＯ＋ ’ ” 十〇Ｏ２１’
”）−□）−・■
Ｎ２ □１
の通りとなる。Wgt' = 0.79
Σ △O, / V b −□ (□ i=1 22.4
N2ll. u'(C011n+2CO2□In) 1□)-■ N,, l11 12xo, 79 (CO, lOu' 10 CO□
,oukai) Σ ΔG , / V b = −□ (
□i”1 22.4
N2 n. u'(CO+ ' ” 10O21'
”)−□)−・■ N2 □1.
従ってｉ＝ｉにおける還元率Ｒ０は次式の通りＲ，＝１
−（Σ △０．／Σ Δ０１）ｉ−１１−１
＝１−（（Σ Δｏ＋／ｖｂ）／（Σ Δｏ 、／ｖｂ
））−■ｉ−１ｉ＝１
となる。また、ガス利用率η。は次式の通りとなる。Therefore, the reduction rate R0 at i=i is as follows: R,=1
-(Σ Δ0./Σ Δ01)i-11-1 =1-((Σ Δo+/vb)/(Σ Δo,/vb
))-■i-1i=1. Also, the gas utilization rate η. is as follows.
Ｏ２
ηＯ：
ＣＯ＋ＣＯ２
以上より、ボッシュガス中のｃｏ、ｃｏ２． Ｎ２濃度
を計算より求め、ｉ＝ｉにおけるｃｏ、ｃｏ、。O2 ηO: CO+CO2 From the above, co, co2. The N2 concentration is determined by calculation, co, co, at i=i.
Ｎ２を測定することより、その部分における還元率Ｒ０
を求めることができる。By measuring N2, the reduction rate R0 in that part
can be found.
分析装置（１８）では、送給された情報に基づいてガス
組成を分析し、ガス反応率、ガス背圧から炉内圧の圧損
等の炉内状況、更に炉内の原料の溶融帯高さ位置を検出
する。ここで、炉内の溶融帯高さ位置は、あらかじめ仮
定された溶融帯高さ位置における還元率（Ｒ，）の値を
求めて仮想溶融帯高さ位置（例えばＲ８２９０％）とし
て、第２図のように各サンプリング位置のガス反応率よ
り鉱石還元率分布曲線を求めそれを仮想溶融帯高さ位置
にあてはめることにより求める。The analyzer (18) analyzes the gas composition based on the supplied information, and determines the gas reaction rate, gas back pressure, furnace internal conditions such as pressure drop in the furnace, and the height position of the molten zone of the raw material in the furnace. Detect. Here, the height position of the melting zone in the furnace is determined by determining the value of the reduction rate (R,) at a pre-assumed melting zone height position and setting it as a virtual melting zone height position (for example, R8290%), as shown in Figure 2. The ore reduction rate distribution curve is obtained from the gas reaction rate at each sampling position as shown in the figure, and it is obtained by applying it to the virtual melting zone height position.
検出された諸データは、制御装置のプログラマプルコン
トローラに入力される。ここで、炉内の溶融帯高さ位置
を正常時の溶融帯高さと比較し、炉頂装入装置を駆動・
停止して、正常時の溶融帯高さに移行・保持する。The detected data are input to a programmable controller of the control device. Here, the height position of the molten zone in the furnace is compared with the height of the molten zone under normal conditions, and the furnace top charging device is driven and
Stop and move to and maintain the normal melting zone height.
乙のように、炉内の溶融帯の操業状況を任意の時間に連
続的に把握することができるため、その溶融帯の高さを
設定レベルに保持する制御ができる。As shown in Part B, since the operating status of the melting zone in the furnace can be continuously monitored at any time, it is possible to control the height of the melting zone to be maintained at a set level.
本実施例での制御装置は、プログラマブルコン１−ロー
ラと炉頂装入装置を組合せた装置であるが、送風量を調
節する装置、送風温度を調節する装置など、溶融帯高さ
を調節する装置であれば同様な効果を期待できる。また
、本実施例では、サンプリングされたガスのうち、Ｇｏ
、Ｃｏ２．Ｎ２を成分分析したが、単純化するためにＣ
０２Ｃ０２を分析したり、逆に、緻密な制御をするため
にＣＯ２Ｃｏ２．Ｎ２．Ｈ，を分析しても相当の効果を
期待できる。The control device in this example is a device that combines a programmable controller 1-roller and a furnace top charging device, and there are other devices that adjust the height of the melting zone, such as a device that adjusts the air flow rate and a device that adjusts the air blow temperature. A similar effect can be expected with this device. In addition, in this example, among the sampled gases, Go
, Co2. We analyzed the components of N2, but for simplicity, C
CO2Co2. N2. Considerable effects can be expected by analyzing H.
す上のように本発明によれば、炉下部の熱的バランス及
び溶銑、スラグへの伝熱を支配している溶融帯の高さを
検知し、その高さレベルを制御するので、炉内の溶銑温
度を安定に制御できる効果がある。As described above, according to the present invention, the height of the molten zone that governs the thermal balance in the lower part of the furnace and the heat transfer to hot metal and slag is detected and the height level is controlled. This has the effect of stably controlling the temperature of hot metal.
第１図は本発明の一実施例を示す概略構成図、第２図（
Ａ）は炉壁ストックライン図、（Ｂ）は鉱石還元率分布
曲線図、第３図はある高炉でのケイ素濃度と溶銑温度と
の相関関係を示す線図、第４図はある３つの高炉での溶
銑成分と溶銑温度の推移を示す線図である。
図において、（１０）は炉壁、（１２）はガス採取管、
（１２ａ）は窒素ガス供給管、（１４）は圧力変換器、
（１６）はサンプリング管である。
なお、各図中同一符号は同一または相当部分を示す。Figure 1 is a schematic configuration diagram showing an embodiment of the present invention, Figure 2 (
A) is a furnace wall stock line diagram, (B) is an ore reduction rate distribution curve diagram, Figure 3 is a diagram showing the correlation between silicon concentration and hot metal temperature in a certain blast furnace, and Figure 4 is a diagram of three blast furnaces. It is a diagram showing changes in hot metal components and hot metal temperature at . In the figure, (10) is the furnace wall, (12) is the gas sampling pipe,
(12a) is a nitrogen gas supply pipe, (14) is a pressure transducer,
(16) is a sampling tube. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (3)
ガスサンプリング装置、サンプリングされたガスの分析
装置、炉熱制御装置を備えた銑鉄を生産する高炉におい
て、ガス分析装置によって炉内の原料の溶融帯高さと炉
内状況を求め、溶融帯高さが設定レベルとなるように、
炉熱制御装置を制御することを特徴とする高炉操業法。(1) In a blast furnace that produces pig iron, which is equipped with multiple gas sampling devices arranged in the height direction to determine the reduction state in the furnace, an analyzer for the sampled gas, and a furnace heat control device, the gas analysis device measures the inside of the furnace. Determine the height of the molten zone of the raw material and the situation inside the furnace, and make sure that the height of the molten zone is at the set level.
A blast furnace operating method characterized by controlling a furnace heat control device.
のうち、ＣＯ、ＣＯ＿２、Ｎ＿２を成分分析することを
特徴とする特許請求範囲第１項記載の高炉操業法。(2) The blast furnace operating method according to claim 1, wherein CO, CO_2, and N_2 of the sampled gas are analyzed by a gas analyzer.
ラと炉頂装入装置を組合せた装置を用いることを特徴と
する特許請求範囲第１項記載の高炉操業法。(3) The blast furnace operating method according to claim 1, characterized in that a device combining a programmable controller and a furnace top charging device is used as the furnace heat control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30028587A JPH01142008A (en) | 1987-11-30 | 1987-11-30 | Operation of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30028587A JPH01142008A (en) | 1987-11-30 | 1987-11-30 | Operation of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01142008A true JPH01142008A (en) | 1989-06-02 |
Family
ID=17882949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30028587A Pending JPH01142008A (en) | 1987-11-30 | 1987-11-30 | Operation of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142008A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013019706A (en) * | 2011-07-08 | 2013-01-31 | Jfe Steel Corp | Method and apparatus for measuring utilization rate of blast furnace gas |
-
1987
- 1987-11-30 JP JP30028587A patent/JPH01142008A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013019706A (en) * | 2011-07-08 | 2013-01-31 | Jfe Steel Corp | Method and apparatus for measuring utilization rate of blast furnace gas |
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