JP2009012913A - Method and device for controlling weighing of raw material hopper - Google Patents
Method and device for controlling weighing of raw material hopper Download PDFInfo
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- JP2009012913A JP2009012913A JP2007175761A JP2007175761A JP2009012913A JP 2009012913 A JP2009012913 A JP 2009012913A JP 2007175761 A JP2007175761 A JP 2007175761A JP 2007175761 A JP2007175761 A JP 2007175761A JP 2009012913 A JP2009012913 A JP 2009012913A
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- 239000002994 raw material Substances 0.000 title claims abstract description 64
- 238000005303 weighing Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000000571 coke Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Abstract
Description
本発明は、原料を秤量し払出し時に混合・ブレンドする、原料ホッパの秤量制御方法および装置に関するものである。 The present invention relates to a raw material hopper weighing control method and apparatus for weighing raw materials and mixing and blending at the time of dispensing.
一般的に、ホッパから原料排出し、コンベア（例えばベルトコンベア）で輸送を行う設備では、原料排出装置としてホッパ底部にゲートまたはフィーダ（例えば電磁フィーダ）またはこれらを組み合わせたものを用いている（例えば特許文献１、２等）。
従来、１つのホッパで秤量し払出す原料は、１チャージの内、１回である。しかしながら、高炉の場合、最近では、炉内装入物分布をより厳密にする為に、１チャージに装入する鉱石、コークスを分割し、それぞれの原料の配合を変えるのが一般的となっている。 Conventionally, the raw material weighed and dispensed with one hopper is one out of one charge. However, in the case of a blast furnace, recently, it has become common to divide the ore and coke charged into one charge and change the composition of each raw material in order to make the distribution of the furnace interior more strict. .
例えば、鉱石を２分割、コークスを２分割し、Ｃ１／Ｃ２／Ｏ１／Ｏ２で１チャージの装入を行う。従来、１つのホッパで秤量、払出す原料は、１チャージの内、１回であるため、ある原料ＡをＯ１とＯ２の両方に配合する場合には、Ａの槽を２槽用意する必要があった。 For example, the ore is divided into two, the coke is divided into two, and one charge is charged with C1 / C2 / O1 / O2. Conventionally, since the raw material weighed and dispensed by one hopper is one time out of one charge, when mixing a certain raw material A into both O1 and O2, it is necessary to prepare two tanks of A. there were.
図３は、貯鉱槽５槽で鉱石２分割の例を説明する図である。 Ｏ１に原料Ｂ、Ｃを配合、さらにＯ２に原料Ａ、Ｂ、Ｃを配合する貯鉱槽５槽(１〜５号槽)の場合を図３上段に示している。そして、原料Ａを配合すると生産性が上がるため、Ｏ１にも配合したい(原料ＡをＯ１とＯ２の両方に配合する)という要望がでた場合には、少量の配合であっても、他原料Ｂの槽をＡの槽に振替えるか、振替えでは装入能力が不足する場合、または振替えられる予備槽が無い場合は、図３下段に示すように、原料Ａ用の槽(６号槽)を新設しなければならない。場合によっては、ベルトコンベアの延長も必要になる。以上のように、多大な費用をかけての新設を余儀なくされていた。 FIG. 3 is a diagram for explaining an example of two ore divisions in five storage tanks. The upper part of FIG. 3 shows the case of 5 storage tanks (No. 1-5 tanks) in which raw materials B and C are blended with O1, and further, raw materials A, B and C are blended with O2. And since the productivity increases when the raw material A is blended, if there is a demand for blending with O1 (mixing raw material A into both O1 and O2), even if it is a small amount, other raw materials If the tank of B is transferred to the tank of A, or if the transfer capacity is insufficient by the transfer, or if there is no spare tank to be transferred, the tank for raw material A (No. 6 tank) as shown in the lower part of FIG. Must be established. In some cases, it is also necessary to extend the belt conveyor. As described above, it was forced to establish a new construction with great expense.
本発明は、これら従来技術の問題点に鑑み、槽の新設を行うことなく、１つの槽で秤量・払出す原料を１チャージの内、複数設定することが可能な、原料ホッパの秤量制御方法および装置を提供することを課題とする。 In view of these problems of the prior art, the present invention provides a raw material hopper weighing control method in which a plurality of raw materials to be weighed and discharged in one tank can be set without performing a new tank. Another object is to provide a device.
本発明の請求項１に係る発明は、１つの槽で秤量・払出す原料を、１チャージの内、複数設定する原料ホッパの秤量制御方法であって、前記１つの槽に、複数設定する原料ごとに仮想的に複数の槽が存在するように、それぞれの秤量制御を行うことを特徴とする、原料ホッパの秤量制御方法である。 The invention according to claim 1 of the present invention is a raw material hopper weighing control method for setting a plurality of raw materials to be weighed and dispensed in one tank within one charge, and a plurality of raw materials to be set in one tank A weighing control method for a raw material hopper, characterized in that each weighing control is performed so that a plurality of tanks exist virtually each time.
また本発明の請求項２に係る発明は、請求項１に記載の原料ホッパの秤量制御方法において、１つの槽で１チャージの内に秤量・払出す原料についての秤量設定値を読み込む工程と、読み込んだ秤量設定値に基づき、前記１つの槽に前記原料を目標秤量値まで貯める工程と、貯めた原料を前記１つの槽が空になるまで払出す工程と、前記各工程を複数の原料の各原料ごとに順に行うことを特徴とする、原料ホッパの秤量制御方法である。
The invention according to
さらに本発明の請求項３に係る発明は、１つの槽で秤量・払出す原料を、１チャージの内、複数設定する原料ホッパの秤量制御装置であって、前記１つの槽への原料排出をするフィーダおよびフィーダ駆動盤と、前記１つの槽から原料切出しをする払出ゲート、フィーダ、および開閉・駆動盤と、前記１つの槽に、複数設定する原料ごとに仮想的に複数の槽が存在するように、それぞれの秤量制御を行うために、前記フィーダ駆動盤と前記開閉・駆動盤への制御信号を出力する、秤量制御器とを備えたことを特徴とする、原料ホッパの秤量制御装置である。 Further, the invention according to claim 3 of the present invention is a raw material hopper weighing control device that sets a plurality of raw materials to be weighed and discharged in one tank, and discharges the raw materials to the one tank. Feeder, feeder drive panel, dispensing gate, feeder, and open / close / drive panel for cutting out raw material from the one tank, and a plurality of tanks for each raw material set in the one tank. Thus, in order to perform each weighing control, a weighing controller for a raw material hopper comprising a weighing controller for outputting a control signal to the feeder driving panel and the opening / closing / driving board is provided. is there.
本発明は、１つの槽で仮想的に複数の槽が存在する様に秤量制御を行うようにしたので、槽の新設を行うことなく、１つの槽でもって秤量・払出す原料を１チャージの内、複数設定することができた。これにより、設備化費用と設備化のための停止時間を大幅に削減することができた。さらに、日々進歩する配合技術に対して、操業の自由度を大きく拡げることができるようになった。 In the present invention, since the weighing control is performed so that a plurality of tanks exist virtually in one tank, the raw material to be weighed and dispensed in one tank can be charged with one charge without newly installing a tank. Among them, multiple settings could be made. As a result, the equipment cost and the downtime for the equipment could be greatly reduced. Furthermore, it has become possible to greatly expand the degree of freedom of operation for compounding technology that progresses day by day.
図４は、本発明を考案するに至った知見を説明する図である。これまで、１つの槽で秤量、払出す原料は１チャージの内、１回にしていたのは、タイムサイクルの問題である。 FIG. 4 is a diagram for explaining the knowledge that led to the invention. Until now, it was a matter of time cycle that the raw material to be weighed and dispensed in one tank was once out of one charge.
図４（ａ）は、従来の、１槽の秤量は１チャージ内、１回の場合を示す図である。これを、図４（ｂ）に示す、１号槽（秤量量大）が１チャージ内、２回秤量の場合のように、秤量量の多い主原料等を１チャージの内、２回以上秤量したのでは１チャージの秤量時間が非常に長くなり、炉頂装入に間に合わなくなる。 FIG. 4 (a) is a diagram showing a conventional case where one tank is weighed once within one charge. As shown in FIG. 4B, the first raw material (large weighing amount) is weighed twice or more in one charge, as in the case where the first weighing vessel (large weighing amount) is in one charge, twice weighing. If this is done, the weighing time for one charge becomes very long, and it will not be in time for charging the top of the furnace.
しかし、図４（ｃ）に示す、５号槽（秤量量少）が１チャージ内、２回秤量の場合のように、少量の配合、例えば副原料やコークス等であれば、１チャージの内、２回以上秤量しても、主原料の秤量時間が支配的であるため、１チャージの秤量時間の延長は微少で済むことが分かった。このように、秤量する量が少量のホッパでは、タイムサイクルが伸びる弊害が微少であり、特に効果がある。 However, as shown in FIG. 4 (c), No. 5 tank (small weighing) is in one charge, and if it is a small amount of compounding, for example, auxiliary material or coke, within one charge, Even when weighed twice or more, it was found that the weighing time of the main raw material is dominant, so that the weighing time for one charge can be extended only slightly. Thus, in a hopper with a small amount to be weighed, the adverse effect of extending the time cycle is very small and particularly effective.
そこで、多大な費用をかけてホッパを新設するのでは無く、安価なソフト改造で実現することができる本発明を考案したものである。図２は、本発明に係る原料ホッパの秤量制御装置の構成例を示す図である。また、図１は、本発明に係る原料ホッパの秤量制御方法の処理手順例を示す図である。図中、１は５号槽、２は電磁フィーダ、３は秤量ホッパ、４はロードセル、５は払出ゲート、６は電磁フィーダ、７は秤量制御器、８はフィーダ駆動盤、および９は開閉・駆動盤をそれぞれ表す。 Therefore, the present invention is devised that can be realized by inexpensive software remodeling, rather than newly setting up a hopper at great expense. FIG. 2 is a diagram illustrating a configuration example of a raw material hopper weighing control device according to the present invention. Moreover, FIG. 1 is a figure which shows the example of a process sequence of the weighing control method of the raw material hopper which concerns on this invention. In the figure, 1 is No. 5 tank, 2 is an electromagnetic feeder, 3 is a weighing hopper, 4 is a load cell, 5 is a dispensing gate, 6 is an electromagnetic feeder, 7 is a weighing controller, 8 is a feeder drive panel, and 9 is open / close Each drive panel is represented.
先ず、図１は、１つのホッパ（５号槽１）に対して制御的には仮想的に２つの槽（５A号槽と５B号槽）が存在する様に秤量制御系を構成する制御システムの例を示したものである。５号槽１の下部に設置した電磁フィーダ２で原料を排出して、ロードセル４を備えた秤量ホッパ３で内容物の秤量を行う。目標の秤量分を貯えたら、下部に設置した払出ゲート５を開けて電磁フィーダ６またはベルトコンベア（図示せず）で輸送するものである。
First, FIG. 1 shows a control system that constitutes a weighing control system so that there are virtually two tanks (5A tank and 5B tank) for one hopper (5 tank 1). This is an example. The raw material is discharged by the
秤量制御器７は、ロードセル４の秤量値および上位管理計算機（図示せず）から秤量設定値 (この例では、分割区分(O１、O２)および目標とする秤量値(２．５ｔ、５．０ｔ))などを入力として、仮想的に５Ａ号槽と５Ｂ号槽が存在する様に制御演算を行い、出力として制御信号を、フィーダ駆動盤８および開閉・駆動盤９に送る。
The weighing controller 7 obtains the weighing value of the load cell 4 and the weighing set value from the upper management computer (not shown) (in this example, the division category (O1, O2) and the target weighing value (2.5t, 5.0t). )) And the like as inputs, control calculation is performed so that the tank No. 5A and the tank No. 5B exist virtually, and a control signal is sent to the
以下、図１に基づき本発明の処理手順を説明してゆく。先ずStep01にて、今回の秤量が
O１かO２のどちらかを判断します。O１の場合はStep02で、O２の場合はStep03で、それぞれの秤量設定値を読み込みます。
Hereinafter, the processing procedure of the present invention will be described with reference to FIG. First, at Step01, this time weighed
Determine whether O1 or O2. In case of O1, read each weighing set value in Step02, and in case of O2 in Step03.
次にStep04で、フィーダ駆動盤８を介して、５号槽１の下部に設置した電磁フィーダ２の運転を開始して、原料を５号槽１から秤量ホッパ３に排出する。そして、Step05で秤量ホッパ３がStep02またはStep03で読み込んだ目標秤量値になったと判断した時点で、電磁フィーダ２の運転を停止し５号槽１からの原料排出を止めて、秤量ホッパ３下部の払出ゲート５を開くと共に、電磁フィーダ６の運転を開始します(Step06)。
Next, in Step 04, the operation of the
Step07で秤量ホッパ３が空になるまで秤量ホッパ３からの原料の払出しを行い。秤量ホッパ３が空になった時点で、ゲート５を閉じると共に、電磁フィーダ６の運転を止め(Step08)、次の秤量制御を行うため、Step01に処理を戻します。
In Step 07, the material is discharged from the weighing hopper 3 until the weighing hopper 3 is empty. When the weighing hopper 3 is empty, the
以上説明した本発明を、高炉の貯鉱槽の小塊コークス槽(Ｃ１／Ｃ２／Ｏ１／Ｏ２での装入スケジュール時、Ｏ１、Ｏ２の両方に小塊コークスを配合する操業)に適用したところ、従来行って来たホッパ新設の場合に比べ、設備化費用として約１／２０の費用で同等の機能を達成できた。さらに、従来の工事の為の設備停止時間に対して１／１０の停止時間でソフト改造を完了できた。 When the present invention described above is applied to a small coke tank of a blast furnace storage tank (operation in which small coke is added to both O1 and O2 at the charging schedule in C1 / C2 / O1 / O2) Compared to the case where a hopper has been newly established, an equivalent function can be achieved at a cost of about 1/20 of the equipment cost. In addition, the software modification was completed in 1/10 of the downtime of the equipment downtime for the conventional construction.
また、日々進歩する配合技術に対して、これまで設備的な制約が大であったが、本発明により操業の自由度を大きく拡げることができるようになった。 Moreover, although the restrictions on facilities have so far been great with respect to the compounding technology that progresses day by day, the present invention has made it possible to greatly expand the degree of freedom of operation.
１ ５号槽
２ 電磁フィーダ
３ 秤量ホッパ
４ ロードセル
５ 払出ゲート
６ 電磁フィーダ
７ 秤量制御器
８ フィーダ駆動盤
９ 開閉・駆動盤
1 Tank No. 5 2 Electromagnetic Feeder 3 Weighing Hopper 4
Claims (3)
前記１つの槽に、複数設定する原料ごとに仮想的に複数の槽が存在するように、それぞれの秤量制御を行うことを特徴とする、原料ホッパの秤量制御方法。 A raw material hopper weighing control method in which a plurality of raw materials to be weighed and dispensed in one tank are set in one charge,
A weighing control method for a material hopper, wherein each weighing control is performed so that a plurality of tanks exist virtually for each of a plurality of raw materials set in the one tank.
１つの槽で１チャージの内に秤量・払出す原料についての秤量設定値を読み込む工程と、
読み込んだ秤量設定値に基づき、前記１つの槽に前記原料を目標秤量値まで貯める工程と、
貯めた原料を前記１つの槽が空になるまで払出す工程と、
前記各工程を複数の原料の各原料ごとに順に行うことを特徴とする、原料ホッパの秤量制御方法。 In the raw material hopper weighing control method according to claim 1,
A step of reading a weighing set value for a raw material to be weighed and dispensed in one charge in one tank;
Storing the raw material up to a target weighing value in the one tank based on the read weighing setting value;
Paying out the stored raw material until the one tank is empty;
A method for controlling the weighing of a raw material hopper, characterized in that the steps are sequentially performed for each raw material of a plurality of raw materials.
前記１つの槽への原料排出をするフィーダおよびフィーダ駆動盤と、
前記１つの槽から原料切出しをする払出ゲート、フィーダ、および開閉・駆動盤と、
前記１つの槽に、複数設定する原料ごとに仮想的に複数の槽が存在するように、それぞれの秤量制御を行うために、前記フィーダ駆動盤と前記開閉・駆動盤への制御信号を出力する、秤量制御器とを備えたことを特徴とする、原料ホッパの秤量制御装置。 A raw material hopper weighing control device that sets a plurality of raw materials to be weighed and dispensed in one tank,
A feeder and a feeder drive panel for discharging the raw material to the one tank;
A dispensing gate for cutting out the raw material from the one tank, a feeder, and an open / close / drive panel;
Output control signals to the feeder drive panel and the opening / closing / drive panel in order to control each weighing so that a plurality of tanks exist virtually for each set of raw materials in the one tank. A weighing control device for a raw material hopper, comprising a weighing controller.
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| JP2007175761A JP5369395B2 (en) | 2007-07-04 | 2007-07-04 | Raw material hopper weighing control method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53126965A (en) * | 1977-04-12 | 1978-11-06 | Kubota Ltd | Apparatus for taking out a constant quantity |
| JPS61183020A (en) * | 1985-02-09 | 1986-08-15 | Oumi Doriyoukou Kk | Delivery device for stored powdery material |
| JPH01316404A (en) * | 1988-06-14 | 1989-12-21 | Kawasaki Steel Corp | Method for charging raw material in blast furnace |
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2007
- 2007-07-04 JP JP2007175761A patent/JP5369395B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53126965A (en) * | 1977-04-12 | 1978-11-06 | Kubota Ltd | Apparatus for taking out a constant quantity |
| JPS61183020A (en) * | 1985-02-09 | 1986-08-15 | Oumi Doriyoukou Kk | Delivery device for stored powdery material |
| JPH01316404A (en) * | 1988-06-14 | 1989-12-21 | Kawasaki Steel Corp | Method for charging raw material in blast furnace |
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