JPH046773B2 - - Google Patents
Info
- Publication number
- JPH046773B2 JPH046773B2 JP26188286A JP26188286A JPH046773B2 JP H046773 B2 JPH046773 B2 JP H046773B2 JP 26188286 A JP26188286 A JP 26188286A JP 26188286 A JP26188286 A JP 26188286A JP H046773 B2 JPH046773 B2 JP H046773B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- amount
- moisture
- added water
- water
- 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.)
- Expired
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、焼結プロセスにおける焼結原料の水
分を制御する装置に係り、特に、焼結機に供給さ
れる焼結原料の水分値を、一定（目標水分値）に
おさえるようにした制御系を有する焼結原料の水
分制御方式に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for controlling the moisture content of sintering raw materials in a sintering process, and in particular, to a device for controlling the moisture content of sintering raw materials supplied to a sintering machine. , relates to a moisture control system for sintering raw materials having a control system that suppresses the moisture content to a constant value (target moisture value).
従来の装置は、特開昭50−20528号に記載の如
く、第２図に示すように、水分調節計２と流量調
節計３との間に乗算機４を設け、水分調節計出力
QBに輸送量検出器５で検出した原料輸送量Ｕ(1)
を遅延器６を介して乗算した後、流量調節計３に
加えて添加水量を制御している。このとき焼結原
料の水分Ｙ％と添加水量Qt／ｈとの間には(1)式
の関係がある。
As described in Japanese Patent Application Laid-open No. 50-20528, the conventional device has a multiplier 4 between a moisture controller 2 and a flow rate controller 3, as shown in FIG.
Raw material transportation amount U(1) detected by transportation amount detector 5 at QB
After being multiplied by the delay device 6, the amount of added water is controlled in addition to the flow rate controller 3. At this time, there is a relationship expressed by equation (1) between the water content Y% of the sintering raw material and the amount of added water Qt/h.
Ｙ＝Ｕ(2)・RIN＋Ｑ／Ｕ(2)＋Ｑ
＝Ｕ(2)・RIN＋Ｋ・QB・Ｕ(2)／Ｕ(2)＋Ｋ・QB・Ｕ(2
)……(1)
ただし、
Ｕ(2)は原料輸送量（ｔ／ｈ）〔水添加位置〕
RINは原料持込水分（％）
Ｋは原料輸送量Ｕが常用輸送量のときＱ＝QB
となるように選んだ乗算器の比例定数
一方、原料輸送量Ｕ(2)と添加水量Ｑとの間には
１≫Ｑ／Ｕ(2)となる関係があるため(2)式の如く近似
できる。Y=U(2)・RIN+Q/U(2)+Q =U(2)・RIN+K・QB・U(2)/U(2)+K・QB・U(2
)...(1) However, U(2) is the amount of raw material transported (t/h) [water addition position] RIN is the moisture content of the raw material brought in (%) K is Q=QB when the amount of raw material transported U is the regular transported amount
The proportionality constant of the multiplier selected so that can.
Ｙ＝RIN＋Ｋ・QB ……(2)
すなわち、原料輸送量Ｕ(2)の変動を補償し、水
分調節計２の出力QBによつて添加水量Ｑを制御
し原料水分RINの変化による焼結原料の水分Ｙ
の変化を押えようとするものである。 Y=RIN+K・QB...(2) In other words, by compensating for fluctuations in the amount of raw material transported U(2) and controlling the amount of added water Q by the output QB of the moisture controller 2, the sintering raw material is adjusted according to changes in the raw material moisture RIN. Moisture Y
This is an attempt to suppress changes in
しかし、添加水の添加位置から水分検出器位置
までの遅れ時間（むだ時間）に対して配慮されて
いなかつた。 However, no consideration was given to the delay time (dead time) from the addition position of the added water to the moisture detector position.
上記従来技術は、ミキサーでの添加水の添加位
置から、焼結原料の水分値Ｙを検出する水分検出
器までの遅れ時間について配慮されておらず、水
分検出器で測定された焼結原料の水分値は、遅れ
時間前に添加水の添加された原料Alに対するも
のであり、現時点でフイードバツク値として添加
水の添加位置（ミキサー）にある原料Aoに対し
て、添加水量を決定した場合、原料Alと原料Ao
の性状の違いから焼結原料の水分値を一定に維持
することに対して制度上問題があつた。つまり、
原料配合比率の変動による持込水分、原料輸送量
の大きな変動に対しては、制御が安定しない。
The above conventional technology does not take into account the delay time from the addition position of added water in the mixer to the moisture detector that detects the moisture value Y of the sintered raw material, and the The moisture value is for the raw material Al to which additive water was added before the delay time, and if the amount of added water is determined for the raw material Ao that is currently at the additive water addition position (mixer) as a feedback value, Al and raw material Ao
Due to the differences in the properties of sintered materials, there were institutional problems in maintaining a constant moisture content of the sintered raw materials. In other words,
Control is not stable in response to large fluctuations in the amount of moisture brought in or the amount of raw materials transported due to changes in the raw material blending ratio.
本発明の目的は、上述の如き欠点を除去し、焼
結原料の水分を安定に制御できるようにしたもの
である。 An object of the present invention is to eliminate the above-mentioned drawbacks and to make it possible to stably control the moisture content of the sintering raw material.
上記目的は、焼結原料の目標水分値からの偏差
を補償するフイードバツク制御系と、水添加位置
にはいる原料を目標水分値にする必要な添加水量
を、その原料の輸送量、原料持込水分より決定す
るフイードフアワード制御系から構成された各各
の添加水量を、プロセスパラメータとなる原料総
合輸送量、原料持込水分の変動状態より重み付け
加算し、添加水を制御することにより達成され
る。
The above purpose is to create a feedback control system that compensates for deviations from the target moisture value of the sintered raw material, and to control the amount of water that is required to be added to bring the raw material entering the water addition position to the target moisture value, the amount of transported raw material, and the amount of raw material brought in. This is achieved by controlling the amount of added water by weighting and adding up the amount of added water in each of the feed forward control systems that are determined by the water content, based on the process parameters such as the total transportation amount of raw materials and the fluctuation state of the moisture brought in. Ru.
フイードバツク系は、プロセスパラメータの小
さな変動、ノズルに対して精度よく添加水量を制
御し、フイードフアワード系は、プロセスパラメ
ータの大きな変動に対して応答性よく添加水量を
制御する。それらの各々の特徴をプロセス状態に
合わせ、添加水量を決定することにより、安定し
た焼結原料の水分制御を提供できる。
The feedback system accurately controls the amount of water added to the nozzle in response to small fluctuations in process parameters, and the feedback system controls the amount of water added with good responsiveness to large fluctuations in process parameters. By adjusting the characteristics of each of these to the process conditions and determining the amount of water added, stable moisture control of the sintered raw material can be provided.
以下、本発明の一実施例を第１図により説明す
る。流量調節計３に入力される添加水量Ｑは、フ
イードバツク系で決定された添加水量QBとフイ
ードフアワード系で決定された添加水量QFから
添加水量調節計１０により決定される。添加水量
QBは、水分検出器１により水添加後の原料の水
分Ｙを検出してフイードバツク水分調節計２に入
力し、目標水分値からの偏差に所望の演算を施し
決定される。添加水量QFは、各原料槽からの原
料輸送量Ｕ(1)ｉを輸送量検出器５で検出し、水添
加位置までの輸送時間を持つ遅延器を介した水添
加位置の原料輸送量Ｕ(2)ｉと、その原料輸送量Ｕ
(2)ｉ、実績添加水量Ｐ(2)を水分検出器１までの輸
送時間を持つ遅延器７を介して、水分検出器１の
位置での原料輸送量Ｕ(3)ｉ、実績添加水量Ｐ(3)及
び水分検出器１により検出された水分Ｙより原料
水分演算器８で決定された原料の持込水分RIiを、
フイードフオワード水分調節計９に入力し、目標
水分値Ｒにするに必要な添加水量として決定され
る。
An embodiment of the present invention will be described below with reference to FIG. The amount of added water Q input to the flow rate controller 3 is determined by the amount of added water controller 10 from the amount of added water QB determined by the feedback system and the amount of added water QF determined by the feed forward system. Added water amount
QB is determined by detecting the moisture content Y of the raw material after water addition by the moisture detector 1, inputting it to the feedback moisture controller 2, and performing a desired calculation on the deviation from the target moisture value. The amount of added water QF is determined by detecting the amount of raw material transported U(1)i from each raw material tank with a transport amount detector 5, and calculating the amount of raw material transported U(1)i from the water addition position to the water addition position via a delay device that has a transport time to the water addition position. (2) i and its raw material transportation amount U
(2)i, the actual amount of added water P(2) is transferred to the moisture detector 1 via the delay device 7 which has the transportation time, and the amount of raw material transported at the position of the moisture detector 1 U(3)i, the actual amount of added water The moisture content RIi of the raw material determined by the raw material moisture calculator 8 from P(3) and the moisture Y detected by the moisture detector 1 is
This is input to the feed forward moisture controller 9 and determined as the amount of added water required to reach the target moisture value R.
ここで、フイードバツク水分調節計２では、次
式により添加水量QBを制御し原料水分RIN、原
料輸送量Ｕの変化による焼結原料の水分Ｙの変動
を押えようとするものである。 Here, the feedback moisture controller 2 controls the amount of added water QB using the following equation to suppress fluctuations in the moisture Y of the sintered raw material due to changes in the raw material moisture RIN and the raw material transportation amount U.
Ｙ≒RIN＋QB／Ｕ ……(3)
これは、水分検出器１にある原料と水添加位置
にある原料の原料水分RIN、輸送量Ｕの差が小
さければ制御は安定する。つまり、
RIN＝Σ（Ｕ（ｊ）ｉ・RIi）／ΣU（ｊ）ｉ……(4)
Ｕ＝ΣU（ｊ）ｉ ……(5)
の関係式から
Ｕ(2)ｉ≒Ｕ(3)ｉ ……(6)
の条件であれば制御は安定する。 Y≒RIN+QB/U (3) This means that if the difference between the raw material moisture RIN and the transport amount U between the raw material at the moisture detector 1 and the raw material at the water addition position is small, the control will be stable. In other words, from the relational expression RIN=Σ(U(j)i・RIi)/ΣU(j)i...(4) U=ΣU(j)i...(5), U(2)i≒U(3) )i...If the condition is (6), the control will be stable.
つぎに、フイードフオワード系において、原料
水分演算器８では次式により各原料槽の原料水分
RIiを演算する。 Next, in the feed forward system, the raw material moisture calculator 8 calculates the raw material moisture content of each raw material tank using the following formula.
Calculate RIi.
Ｙ≒RIN＋Ｐ(3)／ΣU(3)ｉ ……(7)
RIi＝RIN＊Ｕ(3)ｉ・Ri／Σ（Ｕ(3)ｉ・Ri）……(8
)
ただしRiは各原料槽内の原料の固有水分〔％〕
である。 Y≒RIN+P(3)/ΣU(3)i...(7) RIi=RIN*U(3)i・Ri/Σ(U(3)i・Ri)...(8
) However, Ri is the inherent moisture content of the raw material in each raw material tank [%]
It is.
フイードフオワード水分調節計９では、(9)式に
より添加水量QFを制御し、焼結原料の水分が目
標水分値Ｒになるようにする。 The feed forward moisture controller 9 controls the amount of added water QF using equation (9) so that the moisture content of the sintering raw material reaches the target moisture value R.
Ｒ≒Σ（Ｕ(2)ｉ・RIi）＋QF／ΣU(2)ｉ＋QF……
(9)
以上のように決定された添加水量QB、QFを、
添加水量調節計１０は焼結プロセスを輸送される
原料の状態より
Ｑ＝ａ・QF＋（１−ａ）QB ……(10)
の式で、重み係数ａを決定し、添加水量Ｑを制御
する。重み係数ａはＵ(2)ａとＵ(3)ｉの偏差傾向よ
り決定される。 R≒Σ(U(2)i・RIi)+QF/ΣU(2)i+QF...
(9) Added water amounts QB and QF determined as above are
The added water amount regulator 10 determines the weighting coefficient a based on the condition of the raw material being transported through the sintering process using the following formula: Q=a・QF+(1-a)QB...(10), and controls the added water amount Q. . The weighting coefficient a is determined from the deviation tendency between U(2)a and U(3)i.
本発明によれば、各原料槽から輸送される原料
の輸送量、配合比率の変動による原料持込水分、
輸送量等のプロセスパラメータの変化に対して
も、その変化量が大きい場合は、フイードフオワ
ード系の添加水量の比重を多くし添加水量を決定
し、変化量が小さい場合は、フイードバツク系の
添加水量の比重を多くし添加水量を決定し、添加
水量を制御することにより、原料輸送量、各原料
槽からの輸送量の変動に対する原料持込水分の変
化を補償するようにしているので、焼結原料の水
分を安定に制御することができる。
According to the present invention, the amount of raw material transported from each raw material tank, the moisture brought into the raw material due to fluctuations in the blending ratio,
Regarding changes in process parameters such as transportation volume, if the amount of change is large, increase the specific gravity of the amount of water added in the feed-forward system to determine the amount of added water; if the amount of change is small, increase the specific gravity of the amount of water added in the feed-back system. By increasing the specific gravity of the amount of added water, determining the amount of added water, and controlling the amount of added water, changes in the moisture content of raw materials brought in due to fluctuations in the amount of raw materials transported and the amount transported from each raw material tank are compensated for. The moisture content of the sintering raw material can be stably controlled.
第１図は本発明の焼結原料の水分制御方式の実
施例を示すブロツク図、第２図は従来の焼結原料
の水分を制御する場合の一例を示すブロツク図で
ある。
２……水分調節計、３……流量調節計、８……
原料水分演算器、９……フイードフオワード水分
調節計。
FIG. 1 is a block diagram showing an embodiment of the water content control system for a sintering raw material according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional method for controlling water content in a sintering raw material. 2... Moisture controller, 3... Flow rate controller, 8...
Raw material moisture calculator, 9...Feed forward moisture controller.
Claims (1)
おいて、焼結原料の目標水分値からの偏差を補償
するフイードバツク制御系と、水添加位置にはい
る原料を目標水分値にするに必要な添加水量を、
その原料の輸送量、原料持込水分より決定するフ
イードフアワード制御系から構成され、各々の制
御系より決定される添加水量を、各原料槽からの
原料輸送量の輸送比率（配合比率）、総合輸送量
の変動状態より重み付け加算し、添加水を制御す
るようにして、配合比率の変化による原料持込水
分、総合輸送量の変動を補償するようにしたこと
を特徴とする焼結原料の水分制御方式。1 In the sintering raw material moisture control system in the sintering process, there is a feedback control system that compensates for deviations from the target moisture value of the sintered raw material, and a feedback control system that controls the amount of added water necessary to bring the raw material entering the water addition position to the target moisture value. ,
It consists of a feed forward control system that determines the amount of raw material transported and the moisture content brought in, and the amount of added water determined by each control system is determined by the transport ratio (mixing ratio) of the amount of raw material transported from each raw material tank, The sintered raw material is characterized in that the amount of added water is controlled by weighting and adding based on the state of fluctuations in the total transportation amount, thereby compensating for fluctuations in raw material moisture brought in and the total transportation amount due to changes in the blending ratio. Moisture control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26188286A JPS63118020A (en) | 1986-11-05 | 1986-11-05 | Moisture control method for sintered raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26188286A JPS63118020A (en) | 1986-11-05 | 1986-11-05 | Moisture control method for sintered raw materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63118020A JPS63118020A (en) | 1988-05-23 |
| JPH046773B2 true JPH046773B2 (en) | 1992-02-06 |
Family
ID=17368075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26188286A Granted JPS63118020A (en) | 1986-11-05 | 1986-11-05 | Moisture control method for sintered raw materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118020A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100415931B1 (en) * | 1999-10-26 | 2004-01-31 | 주식회사 포스코 | Water injection controlling method of raw materials for making sintered ore |
| CN105716987B (en) * | 2016-05-05 | 2018-06-29 | 中冶北方（大连）工程技术有限公司 | A kind of sintering moisture of batch detection and analysis device and its analysis method |
-
1986
- 1986-11-05 JP JP26188286A patent/JPS63118020A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63118020A (en) | 1988-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60161724A (en) | Mixing control apparatus | |
| ES488262A1 (en) | Process and apparatus for metering, controlling and blending liquid flows. | |
| US4494209A (en) | Blending control system | |
| US6120173A (en) | System and method for providing raw mix proportioning control in a cement plant with a gradient-based predictive controller | |
| JPH046773B2 (en) | ||
| GB906394A (en) | Mechanism and method for controlling sintering | |
| DE19739712B4 (en) | Method and device for continuous, gravimetric dosing | |
| JPS6115930A (en) | Method for controlling water of sintered material | |
| JPS5549706A (en) | Pi or pid regulator | |
| JP3267841B2 (en) | Controller with phase compensation function | |
| EP1337451B2 (en) | Method for the pneumatic transportation of bulk material | |
| JPS5935046B2 (en) | Solid-liquid mixing ratio control method | |
| JPH08626B2 (en) | Cutting amount control device | |
| JP2592851B2 (en) | Flow control device | |
| SU1416182A1 (en) | System for regulating the grinding of two-component mixture | |
| JPH044379B2 (en) | ||
| CN102625925A (en) | Devices and methods for loss-in-weight ingredient addition | |
| SU1546147A2 (en) | Method of automatic controlling of jigging machine | |
| SU969313A1 (en) | Method for automatically controlling system for hydraulic conveying of pulp products | |
| JPH0410642B2 (en) | ||
| RU2027765C1 (en) | Adaptive system for controlling the process of preparation of slaked lime | |
| JPS6247407B2 (en) | ||
| JPS6354611B2 (en) | ||
| SU797757A1 (en) | Method of analythic control of recirculation-type technological process | |
| JPS63178306A (en) | Injection control device |