JPS5849610B2 - Method for detecting hot metal intrusion into slag gutter - Google Patents

Method for detecting hot metal intrusion into slag gutter

Info

Publication number
JPS5849610B2
JPS5849610B2 JP3578180A JP3578180A JPS5849610B2 JP S5849610 B2 JPS5849610 B2 JP S5849610B2 JP 3578180 A JP3578180 A JP 3578180A JP 3578180 A JP3578180 A JP 3578180A JP S5849610 B2 JPS5849610 B2 JP S5849610B2
Authority
JP
Japan
Prior art keywords
slag
hot metal
gutter
slag gutter
heat flow
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
Application number
JP3578180A
Other languages
Japanese (ja)
Other versions
JPS56133407A (en
Inventor
純幸 岸本
博巳 中村
源治 中谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP3578180A priority Critical patent/JPS5849610B2/en
Publication of JPS56133407A publication Critical patent/JPS56133407A/en
Publication of JPS5849610B2 publication Critical patent/JPS5849610B2/en
Expired legal-status Critical Current

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  • Blast Furnaces (AREA)

Description

【発明の詳細な説明】 この発明は、スラグ樋への溶銑の浸入検知方法に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting the intrusion of hot metal into a slag trough.

高炉出銑口より流出した廖銑と爵融スラグは、スキンマ
ーで分離され、躊融スラグはスラグ樋に導かれる。
The molten iron and molten slag flowing out from the blast furnace taphole are separated by a skimmer, and the molten slag is led to the slag trough.

スラグ樋には、一般に湯溜りが設けられ、溶融スラグ中
の溶銑を更に分離している。
The slag trough is generally provided with a sump to further separate the hot metal in the molten slag.

ところが、溶銑がスラグ樋に浸入する事故が発生する場
合がある。
However, accidents may occur in which hot metal enters the slag gutter.

この場合、現状ではスラグ樋への廖銑の浸入を自動的に
検知する方法がないため、溶銑浸入の発見が遅れた場合
には、次のような事故が発生する虞れがあった。
In this case, there is currently no way to automatically detect the intrusion of hot metal into the slag gutter, so if the intrusion of hot metal is detected late, there is a risk that the following accidents will occur.

(1).徐冷スラグを採取する場合には、ドライピット
に酵銑が流出し、水蒸気爆発の危険性があると共に、ド
ライピット内でのスラグの採取が困難となる。
(1). When collecting slowly cooled slag, fermented pig iron flows into the dry pit, creating a risk of steam explosion and making it difficult to collect the slag in the dry pit.

(2).水砕スラグを採取する場合には、水砕ホツパー
内での水蒸気爆発による設備の破損と、水砕スラグの製
造中止、人的災害に至る。
(2). When extracting granulated slag, a steam explosion inside the granulated hopper can damage equipment, stop the production of granulated slag, and cause human disasters.

(3).水冷スラグ樋を使用しfこ場合には、水蒸気爆
発による設備の破損と人的災害に至る。
(3). If a water-cooled slag gutter is used, this will lead to equipment damage and human disaster due to steam explosion.

この発明は、上述の種々の問題点を解決するためになさ
れたものであって、 スラグ樋の底部に熱流量測定用セノサーを設置し、溶融
スラグと溶銑との熱流量には差があることから、これら
の熱流量を前記センサーにより検出し、この検出値が設
定値を越えたか否かによってスラグ樋への溶銑の浸入を
検知することに特徴を有する。
This invention was made in order to solve the various problems mentioned above, and a cencer for measuring heat flow rate is installed at the bottom of the slag gutter, and it is possible to measure the difference in heat flow rate between molten slag and hot metal. The present invention is characterized in that these heat flow rates are detected by the sensor, and infiltration of hot metal into the slag gutter is detected based on whether or not the detected value exceeds a set value.

この発明を実施例により図面とともに説明する。This invention will be explained by way of examples and with drawings.

第1図は、この発明の方法の実施例を示す概略説明図で
ある。
FIG. 1 is a schematic explanatory diagram showing an embodiment of the method of the present invention.

図において、1は内部に冷却水の流路5が形成された水
冷スラグ樋、2は水冷スラグ樋1の底部にシール材6等
を介して埋設された公知の熱流量測定用センサーである
In the figure, 1 is a water-cooled slag gutter having a cooling water passage 5 formed therein, and 2 is a known sensor for measuring heat flow rate embedded in the bottom of the water-cooled slag gutter 1 via a sealing material 6 or the like.

3は熱流量測定用センサー2による検出値を予め設定さ
れた設定値と比較する演算器であり、検出値が設定値を
越えた場合に信号が出るようになっている。
Reference numeral 3 denotes an arithmetic unit that compares the detected value by the heat flow measurement sensor 2 with a preset set value, and outputs a signal when the detected value exceeds the set value.

4は演算器3からの信号により警報を発する警報装置で
ある。
Reference numeral 4 denotes an alarm device that issues an alarm based on a signal from the computing unit 3.

このように構成されているので、水冷スラグ樋1に溶融
スラグのみが流れている場合には、第2図に示されるよ
うに、熱流量測定用センサー26こより検出される熱流
量は一定しているが、晦融スラグに溶銑が混入すると、
熱流量測定用センサー2により検出される熱流量は急激
に上昇する。
With this configuration, when only molten slag is flowing through the water-cooled slag gutter 1, the heat flow rate detected by the heat flow measurement sensor 26 is constant, as shown in FIG. However, if hot metal gets mixed into the molten slag,
The heat flow rate detected by the heat flow measurement sensor 2 increases rapidly.

これは、溶融スラグの比熱及び比重は、略0.28K
c a l/Kg ℃及び2.OKv/Lであるのに対
して、溶銑の比熱及び比重は略0. 2 2 Kc a
4/K9 C及び6. 8 Kq/t と単位容積当
りの熱流量は同温変で両者を比較した場合、醇銑の方が
約3倍程度大きいからである。
This means that the specific heat and specific gravity of molten slag are approximately 0.28K.
c a l/Kg °C and 2. OKv/L, whereas the specific heat and specific gravity of hot metal are approximately 0. 2 2 Kca
4/K9 C and 6. This is because the heat flow rate per unit volume of 8 Kq/t is about three times larger for hot iron when comparing the two at the same temperature.

従って、溶融スラグの保有する熱流量近傍の値を設定値
として演算器3に予め設定しておけば、醇融スラグに溶
銑が混入した場合、演算器3から信号が出され、警報装
置4から警報が発せられるので、これを即座に知ること
ができる。
Therefore, if a value close to the heat flow possessed by molten slag is preset in the calculator 3 as a set value, when hot metal is mixed into the molten slag, a signal will be output from the calculator 3 and the alarm device 4 will output a signal. An alert will be issued so you will know this immediately.

尚、上記実施例は、水冷スラグ樋にこの発明の方法を適
用した場合であるが、他のスラグ樋にこの発明の方法を
適用しても同様の効果を得ることが出来ることは勿論で
ある。
Although the above embodiment is a case where the method of the present invention is applied to a water-cooled slag gutter, it is of course possible to obtain the same effect by applying the method of the present invention to other slag gutter. .

以上説明したように、この発明によれば、スラグ樋に溶
銑が浸入した場合、これを即座に検知でき、次の手段を
構じることができるので、スラグ樋への酵銑の浸入によ
り生じていた種々の問題点を全て解決できるといったき
わめて有用な効果がもたらされる。
As explained above, according to the present invention, when hot metal enters the slag gutter, it can be detected immediately and the following means can be provided, so that the intrusion of hot metal into the slag gutter can be detected immediately. This brings about extremely useful effects, such as being able to solve all of the various problems that have arisen.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、この発明の方法の実施例の概略説明図、第2
図は、酵融スラグのみの場合とこれに溶銑が混入した場
合の熱尚量の変化を示す図である。 図面において、1・・・・・・水冷スラグ樋、2・・・
・・・熱流量測定用センサー、3・・・・・・演算器、
4・・・・・・警報装置、5・・・・・・冷却水の流路
、6・・・・・・シール材。
FIG. 1 is a schematic explanatory diagram of an embodiment of the method of the present invention, and FIG.
The figure shows the change in heat content when using only fermented molten slag and when molten pig iron is mixed therein. In the drawing, 1... water-cooled slag gutter, 2...
...sensor for measuring heat flow rate, 3...computer,
4...Alarm device, 5...Cooling water flow path, 6...Sealing material.

Claims (1)

【特許請求の範囲】[Claims] 1 スラグ樋の底部に熱流量測定用センサーを設置し、
溶融スラグと醇銚との熱流量には差があることから、こ
れらの熱流量を前記センサーにより検出し、この検出値
が設定値を越えたか否かによってスラグ樋への溶銑の浸
入を検知することを特徴とするスラグ樋への躊銑の浸入
検知方法。
1 Install a heat flow measurement sensor at the bottom of the slag gutter,
Since there is a difference in heat flow between molten slag and hot metal, these heat flows are detected by the sensor, and infiltration of hot metal into the slag gutter is detected based on whether or not this detected value exceeds a set value. A method for detecting the intrusion of pig iron into a slag gutter.
JP3578180A 1980-03-22 1980-03-22 Method for detecting hot metal intrusion into slag gutter Expired JPS5849610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3578180A JPS5849610B2 (en) 1980-03-22 1980-03-22 Method for detecting hot metal intrusion into slag gutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3578180A JPS5849610B2 (en) 1980-03-22 1980-03-22 Method for detecting hot metal intrusion into slag gutter

Publications (2)

Publication Number Publication Date
JPS56133407A JPS56133407A (en) 1981-10-19
JPS5849610B2 true JPS5849610B2 (en) 1983-11-05

Family

ID=12451435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3578180A Expired JPS5849610B2 (en) 1980-03-22 1980-03-22 Method for detecting hot metal intrusion into slag gutter

Country Status (1)

Country Link
JP (1) JPS5849610B2 (en)

Also Published As

Publication number Publication date
JPS56133407A (en) 1981-10-19

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