JPH03229808A - Method for charging raw material into bell-less blast furnace - Google Patents
Method for charging raw material into bell-less blast furnaceInfo
- Publication number
- JPH03229808A JPH03229808A JP2585490A JP2585490A JPH03229808A JP H03229808 A JPH03229808 A JP H03229808A JP 2585490 A JP2585490 A JP 2585490A JP 2585490 A JP2585490 A JP 2585490A JP H03229808 A JPH03229808 A JP H03229808A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- blast furnace
- hopper
- distributing chute
- charging
- 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
- 239000002994 raw material Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 8
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims description 12
- 239000000571 coke Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- 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、製鉄業における高炉の操業方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of operating a blast furnace in the steel industry.
［従来技術］
第３図は従来技術を示す説明図である。鉱石は鉱石ホッ
パー（ＲＨ）６、コークスはコークスホンパー（Ｃ３Ｈ
）３より排出され、ベルトコンベアー７によって輸送さ
れ、高炉８の上部ホッパー９、下部ホッパー１２を経由
して、分配シュート１５に到達し、分配シュートは原料
を高炉炉頂部に均一に配分する。ＲＨｌあるいはＣ８Ｈ
より原料を排出する時機は、下部ホッパーより原料を排
出した後であるが、その時機は分配シュートの旋回数を
最高値にした場合の所要時間を基準にして定められてい
る。[Prior Art] FIG. 3 is an explanatory diagram showing a prior art. Ore hopper (RH) 6, coke hopper (C3H)
) 3, is transported by a belt conveyor 7, passes through an upper hopper 9 and a lower hopper 12 of a blast furnace 8, and reaches a distribution chute 15, which distributes the raw material uniformly to the top of the blast furnace. RHL or C8H
The timing for discharging more raw material is after the raw material has been discharged from the lower hopper, and the timing is determined based on the time required when the number of revolutions of the distribution chute is set to the maximum value.
［発明が解決しようとする課題］
従来技術において、増産に際しては原料装入能率の増大
を図る必要があるが、その際重要な工程は
■ 原料の下部ホッパーからの排出工程（旋回に要する
時間が長いこと）
■ 原料の下部ホッパーでの受入工程（分配シュートの
旋回数を最高値にした場合の所要時間を基準にして定め
られていること）
である。[Problem to be solved by the invention] In the conventional technology, it is necessary to increase the raw material charging efficiency when increasing production, but the important steps in this case are: ■ Discharging the raw material from the lower hopper (the time required for turning ■ The process of receiving raw materials in the lower hopper (determined based on the time required when the number of revolutions of the distribution chute is set to the maximum value).
■については、旋回数を減少させ、１日あたりの下部ホ
ッパーでの原料受入量の増加比率以上に１旋回あたりの
下部ホッパーからの排出量の増加比率を増大させること
ができる。この結果として、原料の下部ホンパーからの
排出時間は短縮される。Regarding (2), by reducing the number of revolutions, it is possible to increase the rate of increase in the amount of material discharged from the lower hopper per revolution more than the rate of increase in the amount of raw material received at the lower hopper per day. As a result of this, the time for discharging the raw material from the lower pumper is shortened.
しかしながら、■については、次の原料を受は入れる時
機（Ｒ）ｌ、あるいはＣ３Ｈより原料を排出する時機）
は分配シュートの旋回数を最高値にした場合の所要時間
を基準にして定められているので、原料を下部ホッパー
から排出してから、次の原料を受は入れるまでの時間に
損失（待時間）か発生する。このため■の原料の下部ホ
ッパーからの排出時間の短縮が有効にいかされていない
。However, regarding ■, it is the time to receive the next raw material (R)l, or the time to discharge the raw material from C3H).
is determined based on the time required when the number of revolutions of the distribution chute is set to the maximum value, so there is a loss (waiting time) in the time from when the raw material is discharged from the lower hopper until the next raw material is received. ) occurs. For this reason, the shortening of the time for discharging raw materials from the lower hopper in (2) has not been effectively utilized.
本発明は上記の■を解決し、高炉における増産が円滑に
行われるベルレス高炉の原料装入方法を提案することを
その目的とするものである。The purpose of the present invention is to solve the above-mentioned problem (1) and to propose a method for charging raw materials into a bellless blast furnace, which allows smooth production increase in the blast furnace.
［課題を解決するための手段］
本発明に係る、ベルレス高炉の原料装入方法は、該高炉
の分配シュートの旋回数に対応して、高炉原料装入ホッ
パーの原料排出時機を決定するベルレス高炉の原料装入
方法である。[Means for Solving the Problems] A material charging method for a bellless blast furnace according to the present invention is a bellless blast furnace that determines the material discharge timing of a blast furnace material charging hopper in accordance with the number of revolutions of a distribution chute of the blast furnace. This is the raw material charging method.
［作用］
本発明におけるベルレス高炉の原料装入方法は、該高炉
の分配シュートの旋回数に対応して、高炉原料装入ホッ
パーの原料排出時機を決定するので、原料装入間隔が短
縮される。[Function] The raw material charging method for a bellless blast furnace according to the present invention determines the raw material discharge timing of the blast furnace raw material charging hopper in accordance with the number of revolutions of the distribution chute of the blast furnace, so that the raw material charging interval is shortened. .
［実施例］
第１図、および第２図は本発明の一実施例を示すブロッ
ク図および説明図である。第２図において、コークスは
コークス槽１よりベルトコンベアー２によってコークス
ホッパー３に移送され、秤量される。コークスホッパー
はＣ１，Ｃ２ノ２檜からなり、何れも内容積４５がであ
る。鉱石は鉱石槽４よりベルトコンベアー５によって鉱
石ホッパー６に移送され秤量される。鉱石ホッパは０．
．０２の２槽からなり、何れも内容ｆｆ４５ｒｒｆであ
る。これらの原料は、ベルトコンベアー７によって高炉
８の上部ホッパー９に輸送され、上部ゲート弁１０、上
部シール弁１１を経由して、下部ホッパー１２に排出さ
れる。下部ホッパー内の原料は原料コントロールゲート
１３、下部シール弁１４を経由して、分配シュート１５
に排出され、分配シュートは旋回しながら原料を高炉炉
頂に均等に配分する。この際、図示していないが排圧弁
が下部ホッパーと高炉炉頂、下部ホッパーと大気間の圧
力を調整する。第１図において、これらの弁の開閉のタ
イミングを示しているが、先ず、原料コントロールゲー
トを開にして、分配シュートを旋回させ、原料排出後原
料コントロルケートを閉にする。次に下部シール弁を閉
にして、排出弁の開閉によって下部ホッパーの圧力を大
気圧とし、上部シール弁、上部ゲート弁を開にし、原料
を上部ホッパーより移送して、これらの弁を閉にし、上
部ホッパーは原料を受は入れる。[Embodiment] FIGS. 1 and 2 are a block diagram and an explanatory diagram showing an embodiment of the present invention. In FIG. 2, coke is transferred from a coke tank 1 to a coke hopper 3 by a belt conveyor 2 and weighed. The coke hopper is made of two types of cypress wood, C1 and C2, each with an internal volume of 45 mm. The ore is transferred from the ore tank 4 to an ore hopper 6 by a belt conveyor 5 and weighed. Ore hopper is 0.
．． It consists of two tanks of 02, both of which have a content of ff45rrf. These raw materials are transported to the upper hopper 9 of the blast furnace 8 by the belt conveyor 7, and are discharged to the lower hopper 12 via the upper gate valve 10 and the upper seal valve 11. The raw material in the lower hopper passes through the raw material control gate 13 and the lower seal valve 14, and then flows into the distribution chute 15.
The distribution chute distributes the raw material evenly to the top of the blast furnace while rotating. At this time, although not shown, an exhaust pressure valve adjusts the pressure between the lower hopper and the top of the blast furnace, and between the lower hopper and the atmosphere. In FIG. 1, the timing of opening and closing of these valves is shown. First, the raw material control gate is opened, the distribution chute is rotated, and after the raw material is discharged, the raw material control gate is closed. Next, close the lower seal valve, open and close the discharge valve to bring the pressure in the lower hopper to atmospheric pressure, open the upper seal valve and upper gate valve, transfer the raw material from the upper hopper, and close these valves. The upper hopper receives raw materials.
分配シュートの１旋回に要する時間は８秒、これらの弁
の開閉に要する時間は８６秒、原料をコクスホッパー、
鉱石ホッパーから上部ホッパーに輸送する時間は１７９
秒である。従来法においては、最高旋回数を１５回に設
定した場合、炉内に原料を装入するために要する時間は
２０６秒（８ｘ１５＋８６＞であり、これに対し原料輸
送時間は１７９秒一定であるため、原料を炉内に装入開
始後２７秒（２０６−１７９＝２７）後に原料輸送を開
始し、旋回数が１２回に減少してもこの２７秒後に原料
を輸送開始することは変えていなかった０本発明では上
記旋回数が１２回の場合、原料を炉内に装入開始ｔｌｋ
３秒（１８２１７９＝３＞後に原料輸送を開始するよう
にしており、従来法と比較して、２４秒（２７−３＝２
４）だけタイムスケジュールの短縮が図れた。The time required for one rotation of the distribution chute is 8 seconds, and the time required for opening and closing these valves is 86 seconds.
The time taken to transport from the ore hopper to the upper hopper is 179
Seconds. In the conventional method, when the maximum number of rotations is set to 15, the time required to charge the raw material into the furnace is 206 seconds (8 x 15 + 86>), whereas the raw material transportation time is constant at 179 seconds. , the raw material transportation starts 27 seconds (206-179=27) after the start of charging the raw material into the furnace, and even if the number of rotations is reduced to 12, the raw material transportation starts after 27 seconds. In the present invention, when the number of revolutions is 12, the starting time of charging the raw material into the furnace is tlk.
Material transportation is started after 3 seconds (182179=3>), and compared to the conventional method, it takes 24 seconds (27-3=2
4) The time schedule was shortened.
これによって、高炉は約ｌＯ％の増産が可能となった。This has made it possible to increase the production of blast furnaces by approximately 10%.
［発明の効果］
以上のように、本発明によれば、高炉の増産が可能とな
る効果がある。[Effects of the Invention] As described above, according to the present invention, there is an effect that the production of blast furnaces can be increased.
第１図、および第２図は本発明の一実施例を示すブロッ
ク図および説明図、第３図は従来技術を示す説明図であ
る。
１・・コークス槽、２・・・ベルトコンベア３・・・コ
ークスホッパー、４・・・鉱石槽、５・・・ベルトコン
ベアー、６・・鉱石ホッパー、７・・・ベルトコンベア
ー、８・・・高炉、９・・・上部ホッパー、１０・・・
上部ゲート弁、１１・・上部シール弁、１２・・・下部
ホッパー １３・・原料コントロールゲート、１４ 下
部シール弁、１５・・・分配シュート。FIGS. 1 and 2 are a block diagram and an explanatory diagram showing an embodiment of the present invention, and FIG. 3 is an explanatory diagram showing a conventional technique. 1...Coke tank, 2...Belt conveyor 3...Coke hopper, 4...Ore tank, 5...Belt conveyor, 6...Ore hopper, 7...Belt conveyor, 8... Blast furnace, 9... Upper hopper, 10...
Upper gate valve, 11... Upper seal valve, 12... Lower hopper 13... Raw material control gate, 14 Lower seal valve, 15... Distribution chute.
Claims (1)
シュートの旋回数に対応して、高炉原料装入ホッパーの
原料排出時機を決定することを特徴とするベルレス高炉
の原料装入方法。A method for charging raw material in a bellless blast furnace, characterized in that the timing for discharging raw material from a blast furnace raw material charging hopper is determined in accordance with the number of revolutions of a distribution chute of the blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2585490A JPH03229808A (en) | 1990-02-05 | 1990-02-05 | Method for charging raw material into bell-less blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2585490A JPH03229808A (en) | 1990-02-05 | 1990-02-05 | Method for charging raw material into bell-less blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03229808A true JPH03229808A (en) | 1991-10-11 |
Family
ID=12177416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2585490A Pending JPH03229808A (en) | 1990-02-05 | 1990-02-05 | Method for charging raw material into bell-less blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03229808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013053352A (en) * | 2011-09-05 | 2013-03-21 | Yaskawa Electric Corp | Device for and method of controlling charge of blast furnace raw material |
-
1990
- 1990-02-05 JP JP2585490A patent/JPH03229808A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013053352A (en) * | 2011-09-05 | 2013-03-21 | Yaskawa Electric Corp | Device for and method of controlling charge of blast furnace raw material |
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