JPH046873B2 - - Google Patents
Info
- Publication number
- JPH046873B2 JPH046873B2 JP23472783A JP23472783A JPH046873B2 JP H046873 B2 JPH046873 B2 JP H046873B2 JP 23472783 A JP23472783 A JP 23472783A JP 23472783 A JP23472783 A JP 23472783A JP H046873 B2 JPH046873 B2 JP H046873B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- amount
- suction
- water vapor
- molten metal
- 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
- 239000002893 slag Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Charging Or Discharging (AREA)
- Furnace Details (AREA)
Description
【発明の詳細な説明】
本発明は、溶湯上のスラグをサクシヨンヘツド
で吸引させると共に、吸引したスラグを水冷固化
させる溶湯スラグ除去方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molten metal slag removal method in which slag on a molten metal is sucked by a suction head and the sucked slag is solidified by water cooling.
上記溶湯スラグ除去方法においては、作業能率
の向上と溶湯スラグの高粘度化、所謂皮張りを防
止するために、溶湯スラグをできるだけ迅速に吸
引除去することが望まれるのであるが、一方スラ
グを過大に吸引させてしまうと、吸引輸送管にお
ける圧力損失の増大や、水冷却に伴ない発生する
水蒸気の多量発生に起因した真空度低下等により
スラグ搬送トラブルを招く問題があり、それらの
ことから、スラグ吸引量制御に際して適確な吸引
測定を行なうことが重要な課題となつていた。 In the above method for removing molten metal slag, it is desired to remove the molten metal slag as quickly as possible by suction in order to improve work efficiency and prevent the molten metal slag from increasing in viscosity and forming a skin. If the slag is sucked into the slag, there are problems such as an increase in pressure loss in the suction transport pipe and a decrease in the degree of vacuum due to the large amount of water vapor generated due to water cooling, which may lead to problems in transporting the slag. Accurate suction measurement has become an important issue when controlling the amount of slag suction.
そこで従来スラグ吸引量を測定するに、溶湯を
充填した取鍋やトピードカーの総重量を検出し、
スラグ吸引に伴なう総重量変化からスラグ吸引量
を測定したり、あるいは、吸引搬送系路の末端に
おいて回収された固化スラグ重量を測定したりし
ていたのであるが、前者の方法にあつては、数百
トンにも達する取鍋総重量を検出するために、極
めて大がかなり検出装置が必要となる問題があ
り、又、数百トンもの大重量に対してスラグ吸引
量が毎分数百キログラム程度であるため、検出対
象となる重量変化が極めて小さく検出精度面にお
いても末だ信頼性に欠ける問題があつた。更に、
後者の方法にあつては、測定時点と吸引時点との
間にかなりの時間遅れがあるために、リアルタイ
ムで適切なスラグ吸引量制御が行なえない欠点が
あつた。 Conventionally, the amount of slag suction is measured by detecting the total weight of the ladle or torpedo car filled with molten metal.
The amount of slag suction was measured from the change in total weight due to slag suction, or the weight of solidified slag collected at the end of the suction conveyance system was measured. However, in order to detect the total weight of the ladle, which reaches several hundred tons, an extremely large detection device is required.Also, the amount of slag suction per minute is very large compared to the large weight of several hundred tons. Since the weight is about 100 kilograms, the change in weight to be detected is extremely small, and there is a problem of extremely unreliable detection accuracy. Furthermore,
In the latter method, there is a considerable time delay between the measurement time and the suction time, so there is a drawback that the amount of slag suction cannot be properly controlled in real time.
本発明の目的は、上述従来の実情に鑑みて、合
理的な改良方法により、簡単な検出装置で、リア
ルタイムに、かつ、精度良くスラグ吸引量を測定
できるようにする点にある。 An object of the present invention is to make it possible to measure the amount of slag suction in real time and with high precision using a simple detection device by a rational improvement method in view of the above-mentioned conventional situation.
本発明の特徴手段は、スラグの水冷固化により
発生する水蒸気量を検出して、その検出水蒸気量
からサクシヨンヘツドへのスラグ吸引量を測定す
る点にあり、その作用、効果は次の通りである。 The characteristic means of the present invention is that the amount of water vapor generated by water-cooling and solidification of slag is detected, and the amount of slag sucked into the suction head is measured from the detected amount of water vapor.The functions and effects thereof are as follows.
つまり、サクシヨンヘツドによるスラグ吸引除
去に対して種々の実験を行なつた結果、第２図の
関係があることが判つた。第２図はスラグ吸引量
とそのスラグの水冷固化に伴ない発生する水蒸気
量との関係を示し、スラグ吸引量が増加するにつ
れて、水蒸気量が増大することがこのグラフから
判る。 In other words, as a result of conducting various experiments on slag removal by suction using a suction head, it was found that the relationship shown in FIG. 2 exists. FIG. 2 shows the relationship between the amount of slag suction and the amount of water vapor generated as the slag is water-cooled and solidified, and it can be seen from this graph that as the amount of slag suction increases, the amount of water vapor increases.
本発明はこのことに着目して、発生水蒸気量を
検出対象とすると共に、その検出結果から前記相
関に基づいてスラグ吸引量を求めるようにしたこ
とによつて、検出装置を、単に水蒸気量を定量分
析するだけの極めて小型な、かつ、簡単な装置で
構成することができ、又、水蒸気が、スラグ吸引
直後に発生するものであり、かつ、吸引系路にお
ける移送速度が速いことから、サクシヨンヘツド
での吸引時点に対して時間遅れ無くリアルタイム
にスラグ吸引量を測定することができ、しかも、
水蒸気量とスラグ吸引量の量的変化率が共に大き
い状態での相関に基づいた測定であることから測
定誤差も極めて小さくすることができ、それらの
結果、設備コスト面で極めて有利にし得ると共
に、適切なタイミングでの、かつ、適確なスラグ
吸引量制御が可能となつて、スラグ吸引除去作業
能率を大巾に向上し得るに至つた。 Focusing on this, the present invention detects the amount of water vapor generated, and calculates the amount of slag suction from the detection result based on the above correlation, so that the detection device can simply detect the amount of water vapor. It can be constructed with an extremely small and simple device that only performs quantitative analysis, and since water vapor is generated immediately after suctioning the slag and the transfer speed in the suction system is fast, the suction head is It is possible to measure the amount of slag suction in real time without any time delay with respect to the suction point in time.
Since the measurement is based on a correlation in a state where both the amount of water vapor and the amount of slag suction have a large quantitative rate of change, the measurement error can be extremely small, and as a result, it can be extremely advantageous in terms of equipment costs. It has become possible to accurately control the amount of slag suction at appropriate timing, and the efficiency of slag suction and removal work has been greatly improved.
次に本発明の実施例を例示図に基づいて詳述す
る。 Next, embodiments of the present invention will be described in detail based on illustrative drawings.
第１図に示すように、吸気装置１に連通したサ
クシヨンヘツド２を、それを取付けたアーム３操
作により取鍋４やトピードカー内の溶湯Ｌ上に浮
かぶスラグＳに近接させ、サクシヨンヘツド吸引
口からその溶湯スラグＳを空気と共に吸引させる
と共に、サクシヨンヘツド２内部において吸引ス
ラグに対して冷却水を噴出し、スラグを粒状に固
化させる。そして、固化スラグ、冷却水、空気、
及び水冷却に伴ない発生した水蒸気を三相混合状
態で吸引管５を介してセパレータ６に真空移送
し、セパレータ６で固液分と分離されたガス分を
コンデンサー７で復水して空気のみを前記吸気装
置１により排出させると共に、セパレータ６でガ
ス分と分離された固化スラグ及び水を水槽８に回
収し、かつ、その水槽８に装備したコンベア９に
より沈澱固化スラグを揚送回収する。 As shown in FIG. 1, the suction head 2, which is connected to the suction device 1, is brought close to the slag S floating on the ladle 4 or the molten metal L in the torpedo car by operating the arm 3 to which it is attached, and the molten metal is drawn from the suction head suction port. The slag S is sucked together with air, and cooling water is jetted against the sucked slag inside the suction head 2 to solidify the slag into particles. Then, solidified slag, cooling water, air,
The water vapor generated as a result of water cooling is vacuum transferred in a three-phase mixed state to a separator 6 via a suction pipe 5, and the gas separated from the solid-liquid component by the separator 6 is condensed in a condenser 7 to produce only air. is discharged by the intake device 1, and the solidified slag and water separated from the gas by the separator 6 are collected in a water tank 8, and the precipitated solidified slag is lifted and collected by a conveyor 9 installed in the water tank 8.
サクシヨンヘツド２の溶湯スラグＳに対する高
さを、スラグ吸引量測定に基づいてその測定値が
設定値に維持されるように自動制御装置１２によ
り調節させ、吸引移送系路における圧力損失の増
大や、水蒸気の多量発生に起因した真空度低下等
による移送トラブルの主原因となるスラグの過大
吸引を防止しながら、スラグ吸引量をできるだけ
大きく維持し、作業能率を向上すると共に、溶湯
スラグＳが自然冷却により高粘度化し、吸引が不
能となる所謂皮張りが生じることのないようにス
ラグを迅速に吸引除去するのである。 The height of the suction head 2 relative to the molten metal slag S is adjusted by the automatic control device 12 so that the measured value is maintained at the set value based on the measurement of the amount of slag suction, thereby preventing an increase in pressure loss in the suction transfer system and preventing water vapor from increasing. While preventing excessive suction of slag, which is the main cause of transfer troubles due to a decrease in the degree of vacuum caused by the generation of a large amount of The slag is quickly removed by suction to prevent the slag from becoming so-called skin, which increases in viscosity and makes suction impossible.
スラグの吸引量測定を行なうに、先ず前記セパ
レータ６とコンデンサ７とを接続する管路１０に
付設したヒズミゲージ式流量検出センサー１１の
検出結果から、吸引空気量及び水蒸気量の総和を
連続的に測定すると共に、空気のみを吸引排出す
る吸気装置１の性能上、ほぼ一定値となる空気量
を、測定総量から減じて水蒸気量GVを連続的に
検出する。 To measure the suction amount of slag, first, the sum of the suction air amount and water vapor amount is continuously measured from the detection results of the strain gauge type flow rate detection sensor 11 attached to the pipe line 10 connecting the separator 6 and the condenser 7. At the same time, the amount of water vapor G V is continuously detected by subtracting the amount of air, which is a substantially constant value due to the performance of the intake device 1 which sucks and discharges only air, from the total amount of measurement.
第２図は、吸引口径170mmのサクシヨンヘツド
２をスラグ上方60〜80mmの高さに配置し、210N
m3／mmの風量で、取鍋内のスラグを吸引したとき
のスラグ吸引量GSとセパレータ６を出た直後の
水蒸気量GVの関係を示すグラフであつて、水蒸
気量GVが増大するとスラグ吸引量GSも増大して
いることが判る。 Figure 2 shows a suction head 2 with a suction diameter of 170 mm placed at a height of 60 to 80 mm above the slag, and a suction head of 170 mm.
This is a graph showing the relationship between the slag suction amount G S when slag in the ladle is sucked with an air volume of m 3 /mm and the amount of water vapor G V immediately after leaving the separator 6, and the amount of water vapor G V increases. It can be seen that the slag suction amount G S is also increasing.
そこで、スラグ吸引量GSと水蒸気量GVとの間
にある相関関係に基づいて検出水蒸気量GVから
スラグ吸引量GSを連続的に測定するのである。 Therefore, the slag suction amount G S is continuously measured from the detected water vapor amount G V based on the correlation between the slag suction amount G S and the water vapor amount G V.
つまり、スラグ吸引量GSと発生水蒸気量GVと
の間に相関関係があること、水蒸気の吸引移送速
度が速いこと、及び、水蒸気量GVとスラグ吸引
量GSとの変化率が共に大きいこと等を有効利用
して、簡単かつ小型な検出装置で、しかも、リア
ルタイムに精度良くスラグ吸引量GSを測定する
のである。 In other words, there is a correlation between the slag suction amount G S and the generated water vapor amount G V , the suction transfer speed of water vapor is fast, and the rate of change of the water vapor amount G V and the slag suction amount G S is the same. Taking advantage of its large size, the slag suction amount G S can be measured accurately in real time using a simple and compact detection device.
尚、発生水蒸気量GVを検出するに、各種型式
の流量検出センサーにより吸引系路における流動
ガス総量を検出し、吸気装置１で予め設定された
空気量、あるいは、前の流量検出センサーにより
検出した空気量を、前記検出ガス総量から減じて
水蒸気量GVを検出するに代えて、吸引系路に付
設した湿度センサー等各種の水分比検出センサー
により検出される流動ガス中の水蒸気比から水蒸
気量GVを求める等、種々の方法を採用すること
が可能である。 In addition, to detect the generated water vapor amount G Instead of subtracting the amount of air detected from the total amount of detected gas to detect the amount of water vapor G V , the amount of water vapor G It is possible to adopt various methods, such as determining the quantity G V.
図面は本発明に係る溶湯スラグ除去方法の実施
例を示し、第１図は全体側面図、第２図はスラグ
吸引量と水蒸気量との相関関係を示すグラフであ
る。
２……サクシヨンヘツド、Ｌ……溶湯、Ｓ……
スラグ、GV……水蒸気量、GS……スラグ吸引量。
The drawings show an embodiment of the molten metal slag removal method according to the present invention, and FIG. 1 is an overall side view, and FIG. 2 is a graph showing the correlation between the amount of slag suction and the amount of water vapor. 2... Suction head, L... Molten metal, S...
Slag, G V ... water vapor amount, G S ... slag suction amount.
Claims (1)
吸引させると共に、吸引したスラグを水冷固化さ
せる溶湯スラグ除去方法であつて、前記スラグの
水冷固化により発生する水蒸気量GVを検出して、
その検出水蒸気量GVから前記サクシヨンヘツド
２へのスラグ吸引量GSを測定する溶湯スラグ除
去方法。1 A molten metal slag removal method in which the slag S on the molten metal L is sucked by a suction head 2 and the sucked slag is solidified by water cooling, which method includes detecting the amount of water vapor G V generated by the water cooling solidification of the slag,
A molten metal slag removal method that measures the amount of slag sucked into the suction head 2 from the detected amount of water vapor GV .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23472783A JPS60126582A (en) | 1983-12-12 | 1983-12-12 | Method of removing molten metal slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23472783A JPS60126582A (en) | 1983-12-12 | 1983-12-12 | Method of removing molten metal slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60126582A JPS60126582A (en) | 1985-07-06 |
| JPH046873B2 true JPH046873B2 (en) | 1992-02-07 |
Family
ID=16975422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23472783A Granted JPS60126582A (en) | 1983-12-12 | 1983-12-12 | Method of removing molten metal slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60126582A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914002A (en) * | 2017-11-27 | 2018-04-17 | 山西八达镁业有限公司 | A kind of equipment that refining slag is removed during magnesium alloy smelting |
-
1983
- 1983-12-12 JP JP23472783A patent/JPS60126582A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60126582A (en) | 1985-07-06 |
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