JP2741218B2 - Raw material supply control device in sintering equipment - Google Patents
Raw material supply control device in sintering equipmentInfo
- Publication number
- JP2741218B2 JP2741218B2 JP25385288A JP25385288A JP2741218B2 JP 2741218 B2 JP2741218 B2 JP 2741218B2 JP 25385288 A JP25385288 A JP 25385288A JP 25385288 A JP25385288 A JP 25385288A JP 2741218 B2 JP2741218 B2 JP 2741218B2
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- Prior art keywords
- raw material
- ratio
- control device
- raw
- bin
- Prior art date
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、焼結設備における原料供給制御装置に関
し、詳しくは返鉱量に基づく焼結原料供給量制御装置に
関する。Description: TECHNICAL FIELD The present invention relates to a raw material supply control device in a sintering facility, and more particularly to a sintering raw material supply amount control device based on a returned ore amount.
［従来の技術］ 一般に、焼結設備は、焼結機と、この焼結機に各種の
原料を供給する原料供給部とを備えている。また、原料
供給部は、互いに異なる原料を格納する複数の原料ビン
及び各原料ビンの原料の供給を制御する原料供給制御装
置とを有している。具体的に言えば、原料供給部は、配
合すべき原料の配合比に対応した原料ビン、例えば、高
炉返鉱ビン（BF）、ブレンディッドオアビン（BO）、ラ
イムストーンビン（LS）、サーペンタイムビン（SE）、
コークスビン（CO）、返鉱ビン（RE）を有している。こ
のような原料ビンからの原料供給量を切出し制御する原
料供給制御装置には、焼結機から戻される返鉱を格納す
る返鉱ビンの返鉱量のレベルが一定になるように、返鉱
ビンからの供給量を他の原料とは、無関係に制御してい
る。[Prior Art] Generally, a sintering facility includes a sintering machine and a raw material supply section for supplying various raw materials to the sintering machine. The raw material supply unit has a plurality of raw material bins for storing different raw materials and a raw material supply control device for controlling the supply of the raw material to each raw material bin. Specifically, the raw material supply unit supplies raw material bins corresponding to the mixing ratio of raw materials to be compounded, for example, blast furnace return bin (BF), blended ore bin (BO), limestone bin (LS), serpent time Bin (SE),
It has a coke bin (CO) and a return bin (RE). Such a raw material supply control device that cuts out and controls the amount of raw material supplied from the raw material bin is provided with a return ore return in a return ore return bin that stores return ore returned from the sintering machine. The supply amount from the bottle is controlled independently of other raw materials.
［発明が解決しようとする課題］ しかしながら、返鉱ビンの返鉱量がレベル変動すると
いうことは、焼結機上での原料焼結に問題が有るため、
所定サイズの焼結、返鉱量がばらついており、焼結機
は、最適な運動状態にないことを意味している。従っ
て、返鉱量のレベルを他の原料と切離して制御すること
は、不都合な面が多い。[Problems to be Solved by the Invention] However, the fact that the amount of ore returned in the ore return bin fluctuates means that there is a problem in raw material sintering on a sintering machine,
The amount of sintering and returned ore of a predetermined size varies, which means that the sintering machine is not in an optimal motion state. Therefore, controlling the level of returned ore separated from other raw materials has many disadvantages.
そこで、本発明の技術課題は、焼結機が最適に運転で
きるように、各焼結原料の切出し量を制御する原料供給
制御装置を提供することにある。Therefore, a technical problem of the present invention is to provide a raw material supply control device that controls the cut-out amount of each sintering raw material so that the sintering machine can operate optimally.
［課題を解決するための手段］ 本発明によれば、複数の原料の夫々に対応した原料ビ
ンを併設し、前記複数の原料を夫々切出す供給手段を有
する原料供給システムの原料供給量制御装置であって、
前記複数の原料ビンのうちの予め定められた第１の原料
ビンに格納された第１の原料の増減分を定周期で検出す
る検出手段と、前記複数の原料ビンのうちの第１の原料
とは異なる第２の原料を選び、当該第２の原料の他の原
料に対する切出し比率を一定として、前記検出手段によ
り検出された前記第１の原料の増減に基づいて、前記第
１及び第２の原料以外の複数の原料の切出し比率を夫々
算出する演算手段と、前記演算手段の該複数の原料の算
出された切出し比率に基づいて、前記供給手段の原料切
出し量を設定する制御手段とを有することを特徴とする
焼結設備における原料供給制御装置が得られる。[Means for Solving the Problems] According to the present invention, a raw material supply amount control device of a raw material supply system having a raw material bin corresponding to each of a plurality of raw materials and having a supply means for cutting out each of the plurality of raw materials is provided. And
Detecting means for detecting an increase / decrease of the first raw material stored in a predetermined first raw material bin of the plurality of raw material bins at a fixed period; and a first raw material of the plurality of raw material bins. And selecting a second raw material different from the first raw material, keeping the cutout ratio of the second raw material to other raw materials constant, and based on the increase and decrease of the first raw material detected by the detection means, the first and second raw materials. Calculating means for respectively calculating the cutout ratio of a plurality of raw materials other than the raw material, and control means for setting a raw material cutout amount of the supply means based on the calculated cutout ratio of the plurality of raw materials by the calculating means. A raw material supply control device in a sintering facility characterized by having the above.
本発明によれば、前記焼結設備における原料供給制御
装置において、前記第１の原料は返鉱であり、前記第２
の原料はコークスであることを特徴とする焼結設備にお
ける原料供給制御装置が得られる。According to the present invention, in the raw material supply control device in the sintering facility, the first raw material is returned ore and the second raw material is returned.
A raw material supply control device in a sintering facility, characterized in that the raw material is coke.
本発明によれば、前記焼結設備における原料供給制御
装置において、前記コークスの原料比率が３〜４％であ
るとき、前記返鉱の増減分を他原料の原料比率は一定の
ままで、前記コークス比率によって補正することを特徴
とする焼結設備における原料供給制御装置が得られる。According to the present invention, in the raw material supply control device in the sintering facility, when the raw material ratio of the coke is 3 to 4%, the increase / decrease of the returned ore is reduced while the raw material ratio of other raw materials is kept constant. A raw material supply control device in a sintering facility characterized in that correction is made by the coke ratio is obtained.
ここで、本発明においては、原料比率とは、第１の原
料，第２の原料を含む複数の原料の総切出し量に対する
比率をいう。Here, in the present invention, the raw material ratio refers to a ratio of a plurality of raw materials including the first raw material and the second raw material to the total cutout amount.
［作用］ 本発明の原料供給制御装置においては、第１の原料レ
ベル例えば、返鉱レベルは、制御周期毎に検出手段によ
り検出される。検出された今回のレベルは、前回の検出
レベルと比較され、例えば、その指数が求められ、この
指数に応じて原料切出し比率が演算手段により算出され
る。制御手段は、このように算出された切出し比率に
て、各原料ビンにおける供給手段の切出し比率を設定す
る。[Operation] In the raw material supply control device of the present invention, the first raw material level, for example, the ore return level is detected by the detecting means at each control cycle. The detected current level is compared with the previous detection level, and, for example, an index is obtained, and a raw material cut-out ratio is calculated by the calculation means according to the index. The control unit sets the cutout ratio of the supply unit in each raw material bin based on the cutout ratio calculated as described above.
この演算動作は、第２の原料の切出し比率を一定にし
て，第１及び第２の原料以外の残りの原料の新比率を求
める動作で、この新比率に基づいて、各原料ビンより原
料を切出し供給させる。一方、第２の原料が、所定の許
容レベルより大きく外れる場合には、第１及び第２の原
料以外の他の原料の切出し供給量を全て一定にして、第
２の原料の切出し量は、第１の原料の増減分に基づいて
演算処理されて、第１の原料の供給量が制御される。こ
の様にして、常に第１の原料レベルが一定に保たれるの
で、原料又はこの原料から生成した製造物等の一部が、
フィードバックされて、再び原料として用いられるよう
な原料の供給制御装置には、最適である。This calculation operation is an operation for obtaining a new ratio of the remaining raw materials other than the first and second raw materials while keeping the cut-out ratio of the second raw material constant. Cut out and supply. On the other hand, when the second raw material deviates more than the predetermined allowable level, the cut-out supply amounts of the other raw materials other than the first and second raw materials are all constant, and the cut-out amount of the second raw material is Calculation processing is performed based on the increase / decrease of the first raw material, and the supply amount of the first raw material is controlled. In this way, the first raw material level is always kept constant, so that a part of the raw material or the product produced from this raw material,
It is most suitable for a raw material supply control device that is fed back and used again as a raw material.
［実施例］ 本発明の実施例を図面を参照して説明する。Example An example of the present invention will be described with reference to the drawings.
第１図は本発明の実施例に係る原料供給制御装置を示
す図である。FIG. 1 is a diagram showing a raw material supply control device according to an embodiment of the present invention.
図示された、原料供給部は、原料ビンとして、返鉱ビ
ン（RE）１、コークスビン（CO）２、サーペンタイムビ
ン（SE）３、ライムストーンビン（LS）４、ブレンディ
ッドオアビン（BO）５、高炉返鉱ビン（BF）６を有し、
配合すべき夫々の原料の配合比に対応した数だけ設けら
れている。各ビン１〜６の底部には、原料を供給するた
めのフィーダ7,7,・・が夫々設けられている。The raw material supply unit shown in the figure includes a return bin (RE) 1, a coke bin (CO) 2, a serpent time bin (SE) 3, a limestone bin (LS) 4, and a blended or bin (BO) as raw material bins. 5. It has a blast furnace return bin (BF) 6,
A number corresponding to the mixing ratio of each raw material to be compounded is provided. Feeders 7, 7,... For supplying raw materials are provided at the bottom of each of the bins 1 to 6, respectively.
また、上記した原料ビン１〜６からの原料の供給量
を、制御する原料供給制御装置は、返鉱ビン１に取付け
られ、返鉱レベルを検出するための検出器８が設けられ
ており、検出器８で検出された返鉱レベルは、検出回路
９を介して、演算回路10に供給される。演算回路10は、
返鉱レベルに基づいて、各原料の切出し比率を算出す
る。制御回路11は、検出回路９へ予め定められた時間間
隔で検出開始信号を供給するとともに、演算回路10によ
り算出された切出し比率を供給回路12に供給し、原料切
出し量を設定する。供給回路12は、設定された、原料切
出し量により各原料ビンのフィーダの切出し速度を調節
する。このように構成された原料供給制御装置は、BF1
をａ％、BO2をｂ％、LS3をｃ％、SE4をｄ％、CO5をｅ
％、RE6をｆ％とすると、ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ＝100
％となることを条件として、各原料の切出し比率a,b,c,
dとなる配合運転を行う。ここで、各原料は、このよう
な切出し比率で切出され配合されて焼結されて焼結鉱と
なるわけであるが、焼結の後、焼結原料の一部は、返鉱
としてフィードバックされ再び返鉱として切出される。
返鉱量の多いことは、生産性の点から好ましいことでは
ないので、返鉱量を制御することは、特に焼結品の生産
量及び品質を安定させる事からも重要である。Further, a raw material supply control device for controlling the supply amount of the raw materials from the raw material bins 1 to 6 is attached to the return bin 1 and provided with a detector 8 for detecting a return level. The return level detected by the detector 8 is supplied to an arithmetic circuit 10 via a detection circuit 9. The arithmetic circuit 10
Based on the ore return level, the cutout ratio of each raw material is calculated. The control circuit 11 supplies a detection start signal to the detection circuit 9 at a predetermined time interval, supplies the cutout ratio calculated by the arithmetic circuit 10 to the supply circuit 12, and sets the material cutout amount. The supply circuit 12 adjusts the feed rate of the feeder of each raw material bin according to the set raw material cut amount. The raw material supply control device configured in this way is BF1
A%, BO2 b%, LS3 c%, SE4 d%, CO5 e
% And RE6 as f%, a + b + c + d + e + f = 100
%, Provided that the cutout ratios a, b, c,
Perform the compounding operation that becomes d. Here, each raw material is cut out, blended and sintered into a sintered ore at such a cutting ratio, and after sintering, a part of the sintered raw material is fed back as ore return. It is cut out again as a return ore.
Since a large amount of returned ore is not preferable from the viewpoint of productivity, controlling the amount of returned ore is important particularly from the viewpoint of stabilizing the production amount and quality of the sintered product.
次に、本発明の実施例に係る原料供給制御装置の制御
方法について説明する。第２図は実施例に係る原料供給
制御装置の動作説明に供する図である。この図におい
て、返鉱ビン１の原料レベルが示されている。レベルHH
以上をＡエリア、レベルHH〜ＨをＢエリア、レベルＨ〜
ＬをＣエリア、レベルＬ〜LLをＤエリア、レベルLL以下
をＥエリアとする。Ｃエリアは返鉱レベルとして、許容
されるレベルである。この返鉱ビンのレベルは、30分〜
１時間の定周期で、観察され、その結果は、検出回路を
経て演算回路に入力する。Next, a control method of the raw material supply control device according to the embodiment of the present invention will be described. FIG. 2 is a diagram for explaining the operation of the raw material supply control device according to the embodiment. In this figure, the raw material level of the return bin 1 is shown. Level HH
Area A, Level HH ~ H Area B, Level H ~
Let L be a C area, levels L to LL be a D area, and below level LL be an E area. Area C is an acceptable level as a return level. The level of this return bin is 30 minutes ~
Observations are made at regular intervals of one hour, and the results are input to an arithmetic circuit via a detection circuit.
第１表は検出されたレベルエリアに基づく演算回路10
の指定決定のめの制御表を示す。Table 1 shows an arithmetic circuit 10 based on the detected level area.
The following is a control table for determining the designation.
第１表の如く前回のレベルエリアＡ〜Ｅと今回のレベ
ルエリアＡ〜Ｅにより新切出し比率ｆ2を変更する為の
指数１〜５が決定される。表中、指数１はREの切出し比
率ｆ％に変更なし、指数２は新切出し比率ｆ2％＝旧切
出し比率ｆ1％＋α％、指数３は新切出し比率ｆ2％＝旧
切出し比率ｆ1％＋β％、指数４は新切出し比率ｆ2％＝
旧切出し比率ｆ1％−α％、指数５は新切出し比率ｆ2％
＝旧切出し比率ｆ1％−β％を示す。ここで、α，βは
整数で、α＜βである。 Index 1-5 for changing the new cut-out ratio f 2 is determined by the previous level area A~E and the current level area A~E of as in Table 1. In the table, the index 1 is no change in the cut-out ratio f% of RE, index 2 new cut-out ratio f 2% = old cut-out ratio f 1% + α%, index 3 new cut-out ratio f 2% = old cut-out ratio f 1 % + Β%, index 4 is the new cut-out ratio f 2 % =
The old cut-out ratio f 1 % -α%, and the index 5 is the new cut-out ratio f 2 %
= Indicates a 1%-beta% former excision ratio f. Here, α and β are integers and α <β.
更に、新比率ｆ2への返鉱切出し比率変更に従って、
原料総量が100％となるように、他原料の切出しひりつ
は第２表の如く決定される。In addition, in accordance with the return ores cut-out ratio changes to the new ratio f 2,
The cutting rate of other raw materials is determined as shown in Table 2 so that the total raw material amount is 100%.
上述のように、コークス比率は、通常の運転では、一
定に保たれている。しかし、一般的に発生返鉱量は、第
３図の如くコークス比率にも、依存し、コークス比率が
ｘ％（３〜４％）を境に、現状のコークス比率がｘ％よ
り多い。少ないを判定条件に取込む。As described above, the coke ratio is kept constant during normal operation. However, in general, the amount of returned ore depends on the coke ratio as shown in FIG. 3, and the current coke ratio is larger than x% after the coke ratio is x% (3 to 4%). Incorporate less in the judgment conditions.
第１表の指数が、「３」又は「５」即ち前回と今回と
のレベル差がきわめて大きく、更にコークス比率ｅ％
が、ｘ％より大きい場合には、第３表に従って、返鉱比
率の増減分に対して、その他の原料比率は、一定のまま
で、コークス比率で補正する。 The index in Table 1 is "3" or "5", that is, the level difference between the previous time and the current time is extremely large, and the coke ratio e%
Is larger than x%, the other raw material ratios are kept constant and the coke ratio is corrected for the increase or decrease in the return ratio in accordance with Table 3.
ここで、2 ＝ｅ1−（ｆ1−ｆ2） ｅ2＝ｅ1−ｚ（ｅ1−2）；（但し,0≦ｚ≦１） 以上のようにして、返鉱レベルは、制御周期毎に、常
に一定に保たれる。 Here, 2 = e 1 - (f 1 -f 2) e 2 = e 1 -z (e 1 - 2); ( where, 0 ≦ z ≦ 1) as described above, return ores level control It is always kept constant in each cycle.
［発明の効果］ 以上、説明したように、本発明の焼結設備における原
料供給制御装置においては、返鉱発生量を一定に保つこ
とができ、返鉱ビンレベルを許容レベル内に納めること
ができるので、生産性及び品質ともに優れた焼結鉱を製
造することが出来る。[Effects of the Invention] As described above, in the raw material supply control device in the sintering facility of the present invention, the amount of returned ore generated can be kept constant, and the level of the returned ore bin can be kept within an allowable level. Therefore, it is possible to produce a sintered ore excellent in both productivity and quality.
更に本発明によれば、生産が安定するために、焼結鉱
の塩基度,SiO2,FeO,RDI等の目標値の改善及び安定化が
できる。Further, according to the present invention, in order to stabilize production, it is possible to improve and stabilize target values such as basicity of sinter, SiO 2 , FeO, and RDI.
第１図は本発明の実施例に係る焼結設備における原料供
給制御装置の概略構成図、第２図は本発明の実施例に係
る返鉱ビンの原料レベルの説明に供する図、第３図はコ
ークス比率と発生返鉱量との関係を示す図である。 図中１は返鉱ビン（RE）２はコークスビン（CO）、３は
サーペンタイムビン（SE）、４はライムストーンビン、
５はブレンディッドオアビン（BO）、６は高炉返鉱瓶
（BF）、７はフィーダ、８は検出器、９は検出回路、10
は演算回路、11は制御回路、12は供給回路である。FIG. 1 is a schematic configuration diagram of a raw material supply control device in a sintering facility according to an embodiment of the present invention, FIG. 2 is a diagram for explaining a raw material level of a return bin according to an embodiment of the present invention, FIG. FIG. 3 is a diagram showing the relationship between the coke ratio and the amount of returned ore. In the figure, 1 is a return bin (RE), 2 is a coke bin (CO), 3 is a serpent time bin (SE), 4 is a limestone bin,
5 is a blended ore bin (BO), 6 is a blast furnace returned ore bottle (BF), 7 is a feeder, 8 is a detector, 9 is a detection circuit, 10
Denotes an arithmetic circuit, 11 denotes a control circuit, and 12 denotes a supply circuit.
Claims (3)
設し、前記複数の原料を夫々切出す供給手段を有する原
料供給システムの原料供給量制御装置であって、前記複
数の原料ビンのうちの予め定められた第１の原料ビンに
格納された第１の原料の増減分を定周期で検出する検出
手段と、前記複数の原料ビンのうちの第１の原料とは異
なる第２の原料を選び、当該第２の原料の他の原料に対
する切出し比率を一定として、前記検出手段により検出
された前記第１の原料の増減に基づいて、前記第１及び
第２の原料以外の複数の原料の切出し比率を夫々算出す
る演算手段と、前記演算手段の該複数の原料の算出され
た切出し比率に基づいて、前記供給手段の原料切出し量
を設定する制御手段とを有することを特徴とする焼結設
備における原料供給制御装置。An apparatus for controlling a raw material supply amount of a raw material supply system, comprising: a raw material bin corresponding to each of a plurality of raw materials; and a supply means for cutting out the plurality of raw materials. Detecting means for detecting an increase or decrease of the first raw material stored in the predetermined first raw material bin at regular intervals; and a second raw material different from the first raw material of the plurality of raw material bins. A raw material is selected, and a cutout ratio of the second raw material to other raw materials is kept constant, and a plurality of raw materials other than the first and second raw materials are determined based on the increase or decrease of the first raw material detected by the detection means. It has a calculating means for respectively calculating the cutout ratio of the raw material, and a control means for setting a raw material cutout amount of the supply means based on the calculated cutout ratio of the plurality of raw materials by the calculating means. Raw material supply in sintering equipment The control device.
原料はコークスであることを特徴とする第１の請求項記
載の焼結設備における原料供給制御装置。2. The apparatus according to claim 1, wherein said first raw material is returned ore, and said second raw material is coke.
とき、前記返鉱の増減分を他原料の原料比率は一定のま
まで、前記コークス比率によって補正することを特徴と
する第２の請求項記載の焼結設備における原料供給制御
装置。3. The method according to claim 2, wherein when the raw material ratio of the coke is 3 to 4%, the increase or decrease of the returned ore is corrected by the coke ratio while the raw material ratio of the other raw materials is kept constant. A raw material supply control device in a sintering facility according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25385288A JP2741218B2 (en) | 1988-10-11 | 1988-10-11 | Raw material supply control device in sintering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25385288A JP2741218B2 (en) | 1988-10-11 | 1988-10-11 | Raw material supply control device in sintering equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02101385A JPH02101385A (en) | 1990-04-13 |
| JP2741218B2 true JP2741218B2 (en) | 1998-04-15 |
Family
ID=17257031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25385288A Expired - Lifetime JP2741218B2 (en) | 1988-10-11 | 1988-10-11 | Raw material supply control device in sintering equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741218B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724813A (en) * | 2018-06-29 | 2020-01-24 | 宝山钢铁股份有限公司 | Online adjusting system and method for alkalinity of sinter |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100384123B1 (en) * | 1999-10-06 | 2003-05-14 | 주식회사 포스코 | Manufacturing apparatus and method for sinter cake non-addition return fine sinter |
| KR20040046753A (en) * | 2002-11-28 | 2004-06-05 | 주식회사 포스코 | System for measuring sintered fine ore produced in blast furnace ore supplying system |
-
1988
- 1988-10-11 JP JP25385288A patent/JP2741218B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724813A (en) * | 2018-06-29 | 2020-01-24 | 宝山钢铁股份有限公司 | Online adjusting system and method for alkalinity of sinter |
| CN110724813B (en) * | 2018-06-29 | 2021-02-19 | 宝山钢铁股份有限公司 | Online adjusting system and method for alkalinity of sinter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02101385A (en) | 1990-04-13 |
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