JPS605809A - Control system for residual amount of slag in blast furnace - Google Patents
Control system for residual amount of slag in blast furnaceInfo
- Publication number
- JPS605809A JPS605809A JP58114686A JP11468683A JPS605809A JP S605809 A JPS605809 A JP S605809A JP 58114686 A JP58114686 A JP 58114686A JP 11468683 A JP11468683 A JP 11468683A JP S605809 A JPS605809 A JP S605809A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- current value
- blast furnace
- amount
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000001186 cumulative effect Effects 0.000 claims abstract description 4
- 238000012417 linear regression Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims 1
- 238000005469 granulation Methods 0.000 abstract description 6
- 230000003179 granulation Effects 0.000 abstract description 6
- 238000010079 rubber tapping Methods 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 description 6
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 241001490216 Phippsia algida Species 0.000 description 1
- 241000981595 Zoysia japonica Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture Of Iron (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は高炉残滓ｐｉｉ、管理システム、さらに詳し／
は、高り」から耐用されるスラグを水滓処理する工程に
おいて水砕掻き上げ用スクリューコンベアの電流値と出
滓量との関係から時々刻々の排滓量を知りこれに基づい
て高炉の残滓量を算出し、その結果より次回の出銑開始
時期を決定する等、効率よく、高炉操業を行なうように
する高炉残滓量管理システムに関する。[Detailed Description of the Invention] The present invention provides blast furnace residue PII, management system, further details/
In the process of treating slag that has been used since 1990 to slag, the amount of slag discharged from moment to moment is determined from the relationship between the current value of the screw conveyor for scraping up slag and the amount of slag produced. The present invention relates to a blast furnace residue amount management system that enables efficient blast furnace operation by calculating the amount and determining the next time to start tapping based on the result.
高炉操業においては炉内残銑量、残滓量の管理は炉下部
通液性の維持確保の観点から必要不可欠で、高炉の安全
操業を達成するためにきわめて重要な要素である。しか
しながら、従来、これら要素のうち残銑量、出銑口深度
については管理が行なわれているが、残滓量については
排出されるスラグの■７トを十分精度良＜ ＪｉＭ定す
る方法かないためその量管理が困難であって、残滓量の
管理が広（行なわれていないのが現状である。In blast furnace operation, management of the amount of residual pig iron and residue in the furnace is essential from the perspective of maintaining and ensuring liquid permeability in the lower part of the furnace, and is an extremely important element to achieve safe blast furnace operation. However, among these factors, the amount of residual pig iron and the depth of the taphole have been controlled in the past, but regarding the amount of residual pig iron, there is no way to determine the amount of slag discharged with sufficient accuracy. It is difficult to control the amount of residue, and currently the amount of residue is not widely managed.
このような事情のもとに、本発明者らは高炉からの出銑
けを管理し、より安全な高炉操業を計るべく鋭意研究を
重ねた結果、高炉から排出されるスラグを水滓処理する
工程において水滓掻き上げ用スクリューコンベアの電流
値と出滓量との間に明確な関係があることを見い出し、
かかるスクリューコンベアの電流値（以下、ＳＣ電流値
と略す）の変化を観察することにより、出滓量ひいては
高炉中の残滓量を算出することを可能とし、より安全な
高炉操業をなし得ることを知り本発明を完成した。Under these circumstances, the inventors of the present invention conducted extensive research to manage the tapping from the blast furnace and achieve safer blast furnace operation.As a result, the inventors of the present invention have developed a method for treating the slag discharged from the blast furnace with slag. We discovered that there is a clear relationship between the current value of the screw conveyor for scraping up water slag and the amount of slag produced in the process.
By observing changes in the current value of the screw conveyor (hereinafter abbreviated as SC current value), it is possible to calculate the amount of slag output and, ultimately, the amount of slag in the blast furnace, and it is possible to achieve safer blast furnace operation. I learned this and completed the invention.
すなわち、本発明によれば、高炉下部から溶銑およびス
ラグを排出し、その溶銑とスラグを分離したのち、スラ
グを公知の水滓処理設備に付して吹製処理、水砕処理後
、水砕槽よりスクリューコンベアで水砕を掻き上げる際
に、そのスクリューコンベアのモーターにおける電流値
（ＳＣ電流値）と出滓量との間に明確な関係が認められ
るため、この関係を利用して出滓量を算出し、これを計
算スラグ量と対比させることにより高炉残滓はを算出、
管理することができる。That is, according to the present invention, hot metal and slag are discharged from the lower part of the blast furnace, the hot metal and slag are separated, and then the slag is subjected to a known slag treatment equipment to be subjected to blowing treatment, water crushing treatment, and water crushing. When scraping up slag from a tank with a screw conveyor, there is a clear relationship between the current value in the motor of the screw conveyor (SC current value) and the amount of slag, so this relationship can be used to remove slag. By calculating the amount of blast furnace slag and comparing it with the calculated amount of slag,
can be managed.
つぎに図面にしたがって本発明を具体的に説明する。Next, the present invention will be specifically explained according to the drawings.
第１図は公知の高炉水滓スラグ製造における吹製部のフ
ローシートを示す。第１図において、高炉から排出され
るスラグは吹製箱（水）（１）および（２）を通して吹
製処理され（図中、（１Φは排気筒である）、ついで水
砕樋（３）を通して水砕処理したのち水砕槽（４）を径
て集泥機を付設した沈降槽（５）にて沈降処理に付し、
その上澄液は温水槽（６）および冷却塔（１６）利き冷
水槽（７）を径で給水ポンプ（８）により吹製箱（水）
（１）へ回送される。一方、沈降槽（５）にて沈降した
水砕は排泥ポンプ（９）を介して沈降槽分級機であるス
クリューコンベア（１３）によりＪ蚤き上げ′、ベルト
コンベア（１ηにて次工程に回送され、常法にしたがっ
て粒調、水砕ヤードを径で出荷設備に送られる。FIG. 1 shows a flow sheet of a blowing section in the production of known blast furnace water slag slag. In Fig. 1, the slag discharged from the blast furnace is subjected to blowing treatment through blowing boxes (water) (1) and (2) (in the figure, (1Φ is the exhaust pipe), and then to the granulation gutter (3). After passing through the water pulverization tank (4), the water is subjected to sedimentation treatment in a sedimentation tank (5) equipped with a mud collector.
The supernatant liquid is pumped through the hot water tank (6), cooling tower (16), and cold water tank (7) with a water supply pump (8) into a blown box (water).
It is forwarded to (1). On the other hand, the granulated water settled in the settling tank (5) is sent to the next process by the belt conveyor (1 It is sent to a shipping facility according to the grain size and diameter of the granulation yard according to the conventional method.
本発明者らの研究によれば、上記水滓処理工程において
、水砕槽（４）からの沈降水砕の掻き上げ用スクリュー
コンベア（櫓のモーターに負荷される電流値、すなわち
ＳＣ電流値と出滓量との間に一定の関係があることがわ
かった。すなわち、そのＳＣ電流値と水砕の掻き上げ量
との関係を示すと第２図に示すとおりとなる。なお掻き
上げ量は湿潤状態のままの水砕重量（トン：Ｔ）を示す
。According to the research conducted by the present inventors, in the water slag treatment process, the screw conveyor for scraping up sedimented debris from the slag tank (4) (the current value loaded on the motor of the turret, that is, the SC current value) It was found that there is a certain relationship between the amount of slag produced.In other words, the relationship between the SC current value and the amount of slag scraped up is as shown in Figure 2.The amount of slag scraped is The weight of granulated water in a wet state (tons: T) is shown.
また、該播き上げ量とその水砕含水量（％）との関係は
第３図に示すとおりである。Moreover, the relationship between the sowing amount and its granulated water content (%) is as shown in FIG.
この第３図により水滓掻き上げ量を乾燥状態での掻き上
げ量に容易に換算する事が可能となる。This figure 3 makes it possible to easily convert the amount of water slag scraped up into the amount scraped up in a dry state.
ところで該システムの中での高炉より排出された滓は全
て水砕処理され、そのうちの一部が沈降槽へ流れ込むが
その量は極めて僅かであり出滓量管理面から見て無視し
得る量である。従って高炉より排出された水滓のほぼ全
量が水砕槽で沈降し、スクリューコンベアにて掻き上げ
られ、その乾燥状態での掻き上げ量が高炉より排出され
た出滓量と見なすことができる。By the way, all the slag discharged from the blast furnace in this system is granulated, and some of it flows into the settling tank, but the amount is extremely small and can be ignored from the perspective of slag volume control. be. Therefore, almost the entire amount of slag discharged from the blast furnace settles in the granulation tank and is scraped up by the screw conveyor, and the amount of slag scraped up in the dry state can be considered as the amount of slag discharged from the blast furnace.
それ故第２図にもとづきスクリューコンベアの電流値か
ら含水状態での掻き上げ量が分り、また第３図にもとづ
き掻き上げ量に応じた含水量が分るので乾燥状態での１
分間当りの掻き上げ量すなわち出滓量を知ることができ
る。Therefore, based on Figure 2, the amount of water being scraped up can be determined from the current value of the screw conveyor, and based on Figure 3, the amount of water content corresponding to the amount of scraping up can be determined.
You can know the amount of raking up per minute, that is, the amount of slag coming out.
したがって出滓量（Ｙ） （Ｔ／分）＝ｓｃ電流値×ａ
＋ｂにて表わされる式が得られる。ここでａはＳＣ電流
値と掻ぎ上げ量との関係を直線回帰した際の傾きを意味
しｂは定数である。例えば第２図第３図を用いると、Ｙ
＝０．０２８６ｘ（ＳＣ電流値）−Ｉ−１，９２７が得
られる。ついで出銑口開口よりその時刻までの炉内での
滓生成量（Ｘ）は装入物の成分と装入量より容易に算出
されるので、前述の出滓量（Ｙ）出銑１］開［」よりそ
の時刻まで積算した累積出滓量（Ｙｌとの差すなわち炉
内の残滓量の算出が可能となる。すなわち残滓量（ホ）
−スラグ生成ＨＸＩ−累積出滓量（Ｙ）で表わされる。Therefore, the amount of slag output (Y) (T/min) = sc current value x a
A formula expressed by +b is obtained. Here, a means the slope of linear regression of the relationship between the SC current value and the amount of raking, and b is a constant. For example, using Figures 2 and 3, Y
=0.0286x(SC current value)-I-1,927 is obtained. Next, since the amount of slag produced in the furnace from the opening of the taphole to that time (X) can be easily calculated from the composition and amount of charging, the amount of slag produced (Y) described above From the opening ['', it is possible to calculate the difference from the cumulative amount of slag accumulated up to that time (Yl, that is, the amount of slag in the furnace. In other words, the amount of slag (e)
- Slag production HXI - Expressed by cumulative slag amount (Y).
かくして得られた炉内残滓量はプロセス計算機に入力す
れば時々刻々の監視が可能となり、過剰な滓量が炉内に
残れば次回出銑時間を早めるなど、高炉操業上重要な判
断情報が得られることになり効率的な高炉操業管理が可
能となる。By inputting the amount of slag in the furnace obtained in this way into a process computer, it becomes possible to monitor it from moment to moment, and if an excessive amount of slag remains in the furnace, important information for making decisions on blast furnace operation, such as speeding up the next tapping time, can be obtained. This enables efficient management of blast furnace operations.
第１図は高炉水滓スラグ製造における吹製部のフローシ
ート、第２図は水滓スラグ処理工程における水砕槽から
のスラグ掻き上げ用スクリューコンベアの電流値とスラ
グ掻き上げ量との関係を示すグラフ、第３図は同操作時
のスラグ掻き上げ量とその含水率との関係を示すグラフ
である。図中の主な符号はつぎのとおりである。
１および２：吹製箱、４：水砕槽、５：沈降槽、６：温
水槽、７：冷水槽、１３：掻き上げ用スクリューコンベ
ア、１７：ベルトコンベア特許出願人株式会社 神戸製
鋼所
代理人弁理士青山 葆外２名
第２図
３３ ３８ ４３ ４８ ５３ ５８ ６３ｓｃ 電
男ヒイ直−（Ａｌ
第３図
１ ．２ ３ ４ ５
氷礫お（芝、辷Ｉ７量 （Ｌル分９Figure 1 is a flow sheet of the blowing section in the production of blast furnace water slag, and Figure 2 shows the relationship between the current value of the screw conveyor for scraping up slag from the granulation tank and the amount of slag scraped up in the water slag treatment process. The graph shown in FIG. 3 is a graph showing the relationship between the amount of slag scraped up and its water content during the same operation. The main symbols in the figure are as follows. 1 and 2: Blowing box, 4: Granulation tank, 5: Sedimentation tank, 6: Hot water tank, 7: Cold water tank, 13: Scraping conveyor, 17: Belt conveyor Patent applicant Kobe Steel, Ltd. Agent 2 patent attorneys Aoyama Sogai Figure 2 33 38 43 48 53 58 63sc Telephone
Man Hii Straight (Al Figure 3 1 .2 3 4 5 Ice Grass O (Shiba, Length I7 amount (L Le Minute 9
Claims (1)
水滓処理する工程において、水砕掻き上げ用スクリュー
コンベアの電流値（ＳＣ電流値）により、式： ％式％ 〔式中、ＳＣ電流値は初期値ｆｏｌからの上昇電流値、
ａはＳＣ電流値と水滓掻き上げ量との直線回帰した際の
傾き、ｂは定数を意味する〕にしたがって１分間当りの
出滓ｍ（”）を算出し、この式に基づき出銑口開口より
任意の時点までの出滓量を積算し、この累積出滓量とそ
れまでのスラグ生成量の差である炉内残滓量を管理する
ことを特徴とする高炉残滓（■管理システム。(1) During blast furnace operation, in the process of treating slag discharged from the blast furnace with water slag, the current value (SC current value) of the screw conveyor for scraping up slag is calculated using the formula: % formula % [In the formula, SC current value is the rising current value from the initial value fol,
a is the slope of the linear regression between the SC current value and the amount of slag scraped up, and b is a constant], calculate the slag output m ('') per minute, Blast furnace slag management system (■ management system) characterized by integrating the amount of slag coming out from the opening to any point in time and managing the amount of slag in the furnace, which is the difference between this cumulative amount of slag and the amount of slag produced up to that point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58114686A JPS605809A (en) | 1983-06-24 | 1983-06-24 | Control system for residual amount of slag in blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58114686A JPS605809A (en) | 1983-06-24 | 1983-06-24 | Control system for residual amount of slag in blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS605809A true JPS605809A (en) | 1985-01-12 |
| JPH0445562B2 JPH0445562B2 (en) | 1992-07-27 |
Family
ID=14644099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58114686A Granted JPS605809A (en) | 1983-06-24 | 1983-06-24 | Control system for residual amount of slag in blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605809A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621736A (en) * | 2015-12-24 | 2016-06-01 | 四川德胜集团钒钛有限公司 | Converter sludge squeezed water recycling device |
-
1983
- 1983-06-24 JP JP58114686A patent/JPS605809A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621736A (en) * | 2015-12-24 | 2016-06-01 | 四川德胜集团钒钛有限公司 | Converter sludge squeezed water recycling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445562B2 (en) | 1992-07-27 |
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