JPS6046306A - Control method of raw materials charging unit at furnace-top - Google Patents

Control method of raw materials charging unit at furnace-top

Info

Publication number
JPS6046306A
JPS6046306A JP15429783A JP15429783A JPS6046306A JP S6046306 A JPS6046306 A JP S6046306A JP 15429783 A JP15429783 A JP 15429783A JP 15429783 A JP15429783 A JP 15429783A JP S6046306 A JPS6046306 A JP S6046306A
Authority
JP
Japan
Prior art keywords
raw material
raw materials
furnace
weight
blast furnace
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
Application number
JP15429783A
Other languages
Japanese (ja)
Inventor
Hideji Asami
浅見　秀司
Keiichi Kumagai
熊谷　敬一
Shunzo Tono
塔野　俊三
Setsuo Endo
遠藤　節雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP15429783A priority Critical patent/JPS6046306A/en
Publication of JPS6046306A publication Critical patent/JPS6046306A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • 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
    • F27B1/20—Arrangements of devices for charging
    • 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
    • F27B1/28—Arrangements of monitoring devices, of indicators, of alarm devices
    • 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
    • F27D19/00—Arrangements of controlling devices
    • 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
    • F27D3/10—Charging directly from hoppers or shoots
    • 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
    • F27D3/10—Charging directly from hoppers or shoots
    • F27D2003/105—Charging directly from hoppers or shoots using shutters

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)
  • Blast Furnaces (AREA)

Abstract

PURPOSE:To charge raw materials according to the program and to make blast furnace operate with safety, high tapping ratio and low fuel-ratio weighing bunker located at the top of the blast furnace in which raw materials being stored, measuring the weight of said raw materials and by opening of the control gate. CONSTITUTION:The weight of raw materials 2 stored in the bunker 1 located at the top of the furnace is measured by weighing unit 6, referring it to the program in sequence controller 7 through arithmetic unit 9, then actuate a drive unit of the gate 3 by using actuating controller 8. While, opening of the gate 3 is sensed by sensor 5 to confirm its action, the blast furnace can be operated with safety, high tapping ratio, and low fuel ratio by charging raw materials as programmed.

Description

【発明の詳細な説明】 本発明は、鉄鉱石、コークス等の製鉄原料を高炉等に装
入する炉頂原料装入装置の制御方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling a top material charging device for charging iron ore, coke, and other raw materials for iron making into a blast furnace or the like.

従来の炉頂原料装入装置においては、原石コントロール
ゲートの開度を最適角度に固定して使用しているため、
たとえば原料の粒径が異なった場合等においては、原料
の排出速度が変化する。その結果、同一の原料コントロ
ールゲート開度で原料を排出しても、原料分配シュー１
への予定旋回数での計画ｉＪｌ出量対しＣ過不足が生じ
る。In conventional furnace top material charging equipment, the opening degree of the ore control gate is fixed at the optimum angle.
For example, when the particle size of the raw materials differs, the discharge rate of the raw materials changes. As a result, even if the raw material is discharged with the same raw material control gate opening degree, the raw material distribution shoe 1
There will be an excess or deficiency of C with respect to the planned iJl output at the planned number of turns.

通常、高炉操業では鉄鉱石、コークスを交Ｈに炉内に装
入し、原料分配シュートの傾斜角に相当する炉口面内の
ある半径にｄ３りる鉄鉱石とコークスの厚さおよび鉄鉱
石とコークスのｆｆ１ｆｆｉ比をあらかじめ決めて操４
＋１４を指向するＪ：うにしており、原料の排出時間の
変動は、指向する操業ができなくなるという重大な欠点
となるものである。Normally, in blast furnace operation, iron ore and coke are charged into the furnace in an alternating manner. Determine the ff1ffi ratio of coke and coke in advance and perform operation 4.
J: is aimed at +14, and fluctuations in the discharge time of raw materials are a serious drawback in that it becomes impossible to operate as directed.

本発明はこのような従来の欠点を除去し、炉頂原料装入
装置の性能向上を図ることを目的とし、炉頂バンカー内
の原料用ｔｕをへ］測づる秤量器によって原料排出中の
任意の時点での原料重量を計測し、この計測値を所定の
れ１画値と比較して原料コントロールゲートの開度を調
整するようにしたか頂原料装入装置の制御方法に係るも
のである。The present invention aims to eliminate such conventional drawbacks and improve the performance of the furnace top material charging device. This relates to a method of controlling a top raw material charging device, in which the weight of the raw material at the time point is measured, and this measured value is compared with a predetermined one-stroke value to adjust the opening degree of the raw material control gate. .

次に本発明の一実施例を説明づ”る。１１図は本発明に
使用する装置のブロックダイヤグラムであって、１は炉
頂バンカーであって、その内部には鉄鉱石、コークス等
の原料２が収容されている。炉頂バンカー１の下部には
原料コントロールゲート３が取り（＝ｌけられていて、
この原料コントロールゲート３は駆動装置４によって開
閉し、炉頂バンカー１から排出される原料２のｍを調整
できるようになっている。原料コントロールゲート３を
通って排出された原料２は、図示しない旋回可能の原料
分配シュー１−によって、高炉内に装入されるようにな
っている。駆動装置４には開度検出器５が結合されてい
て、原料コン１〜〇−ルゲート３の開度を常に検出する
ようになっている。Next, one embodiment of the present invention will be explained. Fig. 11 is a block diagram of the apparatus used in the present invention, and 1 is a furnace top bunker, inside which raw materials such as iron ore and coke are stored. A raw material control gate 3 is installed at the bottom of the furnace top bunker 1.
This raw material control gate 3 is opened and closed by a drive device 4 so that m of the raw material 2 discharged from the furnace top bunker 1 can be adjusted. The raw material 2 discharged through the raw material control gate 3 is charged into the blast furnace by a rotatable raw material distribution shoe 1- (not shown). An opening degree detector 5 is connected to the drive device 4, and is designed to constantly detect the opening degrees of the raw material controllers 1 to 0-ru gates 3.

炉頂バンカー１の下部イ」近には秤量器６が設けてあっ
て、炉頂バンカー１内に収容されている原料２の［１を
常時計測し、その計測値を演算器９に入力するようにさ
れている。秤量器６としては、ロードセルを３個程度設
けるのが望ましい。A weighing device 6 is installed near the lower part of the furnace top bunker 1 and constantly measures the [1] of the raw material 2 stored in the furnace top bunker 1, and inputs the measured value to the calculator 9. It is like that. As the weighing device 6, it is desirable to provide about three load cells.

７は炉頂原料装入装置のシーケンスコン１〜ローラーで
あって、タイムスケジュールに従って装入装置の各機器
に作動指令を発し、また作動状態のフィードバック信号
を受信して、炉頂原料装入装置の連続的な運転を司どる
部分である。7 is a sequence controller 1 to roller of the top material charging device, which issues operation commands to each device of the charging device according to the time schedule, receives feedback signals of the operating status, and operates the top material charging device. This is the part that controls the continuous operation of the motor.

８は駆動装置４の作動制御器であって、シーケンスコン
１ヘローラー７にり演算器９を介して作動指令を入力し
、これに従って駆動装置４を作動させると、作動完了信
号を演算器９を介してシーケンスコントローラー７に出
力するようになっている。演算器９は秤量器６の七１測
値の変化に応じて原料コントロールグー１〜３の開度調
整ｍを紳出し、作動制御器８に指令を送る働きをする。Reference numeral 8 denotes an operation controller for the drive device 4, which inputs an operation command to the sequence controller 1 through the arithmetic unit 9, and when the drive device 4 is actuated in accordance with this, it sends an operation completion signal to the arithmetic unit 9. It is designed to be output to the sequence controller 7 via. The computing unit 9 functions to adjust the opening degrees m of the raw material controls 1 to 3 in response to changes in the measured values of the weighing device 6, and to send commands to the operation controller 8.

第２図は、炉頂バンカー１内の原料２を１）＋出する時
の原料重量と時間との関係を示したグラフである、第２
図においで原わ１の総重量をＷ。FIG. 2 is a graph showing the relationship between the weight of the raw material and time when the raw material 2 in the furnace top bunker 1 is taken out.
In the figure, the total weight of raw material 1 is W.

トンとし、Ｗｏトンの原料を原料分配シュー１への総回
転数Ｎ。で高炉内へ分布せしめるものとし、高炉内への
分布に要する総排出時間をＴ。The total number of rotations of Wo tons of raw material to the raw material distribution shoe 1 is N. The total discharge time required for distribution into the blast furnace is T.

秒とする。原料分配シュートの旋回は定速運動であるの
で、分配シュートの旋回時間を１０秒／回転とすると、
総排出時間Ｔ。は、Ｔｏ　＝Ｎｏ　Ｘ　ｊ。Seconds. Since the rotation of the raw material distribution chute is a constant speed movement, if the rotation time of the distribution chute is 10 seconds/rotation,
Total discharge time T. is To = No X j.

となる。becomes.

シーケンスコントローラー７への入力データとして、原
料の種類、原料総重量、分配シュート旋回数を入力する
。そしてこの入力したデータを基に演算器９にて第２図
に示づ原料排出計画線ａを計算する。As input data to the sequence controller 7, the type of raw material, the total weight of the raw material, and the number of revolutions of the distribution chute are input. Based on this input data, the calculator 9 calculates the raw material discharge plan line a shown in FIG.

炉頂バンカー１からの原料排出開始後、任意の時間Ｔ１
が経過した時点で炉頂バンカー１内の原料重量を確認す
る。時間Ｔ１が経過した時点での原料排出計画線ａ上の
点をＡとし、原料　４重量の実測値をＡ′とし、この実
測値Ａ′は原料排出計画線ａから外れていたとする。こ
こＣ原料の排出速度を原料排出３１画ＦＡａに戻すため
、計画排出量に対する過不足量ＡＷに比例して原料コン
トロールゲート３の開度を修正する。Any time T1 after the start of raw material discharge from the furnace top bunker 1
When the time period has elapsed, the weight of the raw material in the furnace top bunker 1 is confirmed. It is assumed that the point on the raw material discharge plan line a at the time when time T1 has elapsed is A, the actual measured value of the weight of raw material 4 is A', and this actual value A' is off the raw material discharge planned line a. Here, in order to return the discharge speed of the raw material C to the raw material discharge 31 page FAa, the opening degree of the raw material control gate 3 is corrected in proportion to the surplus/deficiency amount AW with respect to the planned discharge amount.

ここで、原料コントロールゲートの修正開度をＡθとし
、原料排出量の過不足量をＡＷとし、比例定数をｋとす
ると、 Ａθ＝−ｋ　ａＷ となる。Here, if the corrected opening degree of the raw material control gate is Aθ, the amount of excess or deficiency in the amount of raw material discharged is AW, and the proportionality constant is k, then Aθ=−k aW.

実際の原料排出線をｂとすると、任意の時間’ｒ２、Ｔ
３　、Ｔ＜・・・ごとに実際の原料排出線を原料排出バ
１画線ａと比較し、各時点での原１’３１１ノ＋出量の
過不足ＲＡＷに応じて原料コントロールゲート３の開度
を修正し、実際の原料排出線］）が原料排出計画線ａに
近づくようにする。If the actual raw material discharge line is b, any time 'r2, T
3, the actual raw material discharge line is compared with the raw material discharge bar 1 drawing line a every time T Correct the opening degree so that the actual raw material discharge line]) approaches the raw material discharge planned line a.

本発明は高炉に対して計画通りの原料装入が行なえるた
め、安定操業、高出銑比操業、低燃料比操業を達成する
ことができる。Since the present invention allows raw materials to be charged into the blast furnace as planned, stable operation, high iron output ratio operation, and low fuel ratio operation can be achieved.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の方法に使用する装置のブ［１ツクダイ
ヤグラム、第２図は原料を排出する時の原料重量と時間
との関係を示ずグラフＣある。 １・・・炉頂バンカー、３・・・原料コントロールゲー
ト、５・・・開度検出器、６・・・秤量器、７・・・シ
−ケンスコン１−ローラー、８・・・作動制御器、９・
・・演算器。 特　許　出　願　人 石川島播磨重−Ｌ業株式会社FIG. 1 is a block diagram of the apparatus used in the method of the present invention, and FIG. 2 is a graph C showing the relationship between the weight of the raw material and the time when the raw material is discharged. 1... Furnace top bunker, 3... Raw material control gate, 5... Opening degree detector, 6... Weigher, 7... Sequence controller 1-roller, 8... Operation controller , 9・
...Arithmetic unit. Patent application Hitoshi Kawajima Harima Heavy-L Industry Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] １）　下部に原料コントロールゲートを右する炉頂バン
カーに該炉頂バンカー内の原料重量を計測する秤量器を
設け、前記か頂バンカー内の原料排出中の任意の時点で
の原料重量を計測し、この計測値を所定の計画値と比較
して前記原料コントロールグー１−の開度を調整するこ
とを特徴とする炉頂原１９１装入装胃の制御方法。1) A weigher for measuring the weight of the raw material in the top bunker is installed in the top bunker to the right of the raw material control gate at the bottom, and the weight of the raw material at any point during the discharge of the raw material in the top bunker is measured. A method for controlling a charging stomach for charging a furnace top plate 191, characterized in that the measured value is compared with a predetermined planned value and the opening degree of the raw material control gou 1- is adjusted.
JP15429783A 1983-08-24 1983-08-24 Control method of raw materials charging unit at furnace-top Pending JPS6046306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15429783A JPS6046306A (en) 1983-08-24 1983-08-24 Control method of raw materials charging unit at furnace-top

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15429783A JPS6046306A (en) 1983-08-24 1983-08-24 Control method of raw materials charging unit at furnace-top

Publications (1)

Publication Number Publication Date
JPS6046306A true JPS6046306A (en) 1985-03-13

Family

ID=15581050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15429783A Pending JPS6046306A (en) 1983-08-24 1983-08-24 Control method of raw materials charging unit at furnace-top

Country Status (1)

Country Link
JP (1) JPS6046306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204935A1 (en) * 1985-05-10 1986-12-17 Paul Wurth S.A. Method for controlling the charging of a shaft furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204935A1 (en) * 1985-05-10 1986-12-17 Paul Wurth S.A. Method for controlling the charging of a shaft furnace

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