JPS62861B2 - - Google Patents
Info
- Publication number
- JPS62861B2 JPS62861B2 JP1256279A JP1256279A JPS62861B2 JP S62861 B2 JPS62861 B2 JP S62861B2 JP 1256279 A JP1256279 A JP 1256279A JP 1256279 A JP1256279 A JP 1256279A JP S62861 B2 JPS62861 B2 JP S62861B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- gutter
- opening
- temperature
- level
- 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 105
- 238000005192 partition Methods 0.000 claims description 13
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture Of Iron (AREA)
- Glanulating (AREA)
Description
【発明の詳細な説明】
本発明は、製鉄業における製銑、製鋼の過程で
発生するスラグから滓粒を造粒する装置における
滓流制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slag flow control device in an apparatus for granulating slag particles from slag generated in the process of pig iron production and steel production in the iron and steel industry.
製鉄業においては、製銑、製鋼の過程でスラグ
が発生する。このスラグは溶滓の形で発生する
が、この溶滓が凝固する過程でこれを粒状化させ
てコンクリート用砂あるいは骨材を製造すること
が行なわれている。 In the steel industry, slag is generated during the ironmaking and steelmaking processes. This slag is generated in the form of slag, which is granulated during the solidification process to produce concrete sand or aggregate.
溶滓よりこのような滓粒を造粒する従来の装置
を第１図について説明すると、溶滓鍋１は一定速
度で傾動され、内部の溶滓は樋２内に流し込まれ
る。樋２の底面には開孔４が穿設してあつて、樋
２内に流し込まれた溶滓は開孔４より流下して当
板３に衝突し、粒状化して溶滓軌跡５を描きなが
ら図示しない冷却器に達する。 A conventional apparatus for granulating slag granules from slag will be described with reference to FIG. 1. A slag ladle 1 is tilted at a constant speed, and the slag inside is poured into a gutter 2. A hole 4 is bored in the bottom of the gutter 2, and the slag poured into the gutter 2 flows down through the hole 4, collides with the plate 3, becomes granulated, and draws a slag trajectory 5. while reaching a cooler (not shown).
開孔４の大きさが一定であり、開孔４と当板３
との間の距離が一定であつて、しかも溶滓の粘度
が一定で溶滓の同量が同速度で落下すれば、溶滓
軌跡および造粒量、粒径等は一定で滓粒は量的、
質的に安定するが、現状では樋２内の溶滓レベル
一定、すなわち排出ヘツド一定で滓流を制御して
いる。このため溶滓の粘度の変化にともなう溶滓
流量の変化によつて滓粒の造粒量や粒径等の質が
変化し、さらに溶滓軌跡５も変化して冷却器への
入り方も変化して冷却効果にも影響を与えてい
る。 The size of the opening 4 is constant, and the opening 4 and the contact plate 3 are
If the distance between the Target,
Although it is qualitatively stable, currently the slag flow is controlled by keeping the slag level in the gutter 2 constant, that is, by keeping the discharge head constant. Therefore, as the slag viscosity changes, the slag flow rate changes, and the quality of the slag granules, such as the amount and particle size, changes, and the trajectory 5 of the slag also changes, and the way it enters the cooler changes. This also affects the cooling effect.
本発明はこのような造粒量や粒径等の変化が生
じないようにして、安定した連続操業により量
的、質的に優れた滓粒を造粒することができるよ
うにしたもので、溶滓鍋から流し込まれた溶滓が
流下する開孔を底面に備えた樋と該樋の開孔から
流下した溶滓が衝突して粒状化する当板を備えた
滓粒造粒装置において、溶滓鍋から樋内の開孔が
設置されていない側に流し込まれた溶滓が樋内の
開孔設置側へ流れるのを制御することにより樋内
の開孔設置側の溶滓レベルを制御する昇降自在な
仕切板と、該仕切板で仕切られた樋内の開孔設置
側の溶滓レベルを連続的に測定する溶滓レベル計
と、開孔から流下する溶滓流の溶滓温度若しくは
樋内の開孔上の溶滓温度を連続的に測定する温度
計と、前記溶滓レベル計からのレベル信号及び温
度計からの温度信号をもとに樋内の開孔設置側溶
滓レベルが溶滓温度に見合つた溶滓レベルになる
よう前記仕切板を昇降させる駆動装置を作動させ
る制御装置を設けたことを特徴とする滓粒造粒装
置における滓流制御装置を要旨とするものであ
る。 The present invention prevents such changes in granulation amount, particle size, etc., and makes it possible to granulate quantitatively and qualitatively superior slag granules through stable continuous operation. In a slag granulation device comprising a gutter with an opening in the bottom through which slag poured from a slag pot flows down, and a plate on which the slag flowing down from the opening of the gutter collides and becomes granulated, The level of slag on the side of the gutter with open holes is controlled by controlling the flow of the slag poured from the slag pot into the side of the gutter where no open holes are installed to the side of the gutter with open holes installed. A partition plate that can be raised and lowered, a slag level meter that continuously measures the slag level on the side where the opening is installed in the gutter partitioned by the partition plate, and a slag temperature of the slag flowing down from the opening. Alternatively, a thermometer that continuously measures the temperature of the slag above the opening in the gutter, and a temperature signal from the slag level meter and the temperature signal from the thermometer to measure the temperature of the slag on the side of the opening in the gutter. A slag flow control device in a slag granulation device, characterized in that the device is provided with a control device that operates a drive device that raises and lowers the partition plate so that the slag level is commensurate with the slag temperature. It is.
次に本発明の一実施例を第２図を参照して説明
すると、樋２内には仕切板７が設けられていて、
この仕切板７は駆動装置１０によつて昇降され、
上下方向の位置が変えられるようになつている。
仕切板７で仕切られた樋２の一側（第２図におい
て左側）には溶滓鍋１から溶滓が流し込まれ、こ
の溶滓は仕切板７の下を通つて仕切板７の他側
（第２図において右側）に流れ込むものである。 Next, an embodiment of the present invention will be described with reference to FIG. 2. A partition plate 7 is provided in the gutter 2,
This partition plate 7 is raised and lowered by a drive device 10,
The vertical position can be changed.
Molten slag is poured from the slag pot 1 into one side of the gutter 2 partitioned by a partition plate 7 (on the left side in FIG. 2), and this slag passes under the partition plate 7 to the other side of the partition plate 7. (to the right in Figure 2).
仕切板７の他側における樋２の底面には開孔４
が穿設されており、また溶滓レベル計８が設けて
あつて、この側における溶滓レベルｈを連続して
計測し、制御装置９に入力するようになつてい
る。 An opening 4 is provided in the bottom of the gutter 2 on the other side of the partition plate 7.
A slag level meter 8 is provided to continuously measure the slag level h on this side and input it to the control device 9.
樋２の開孔４より流下した溶滓流１１は落下点
Ａで当板３に衝突することになるが、この溶滓流
１１の溶滓温度を輻射温度計６で連続して測定
し、その温度変化の信号を制御装置９に入力する
ようになつている。 The slag flow 11 flowing down from the opening 4 of the gutter 2 collides with the plate 3 at the falling point A, but the slag temperature of this slag flow 11 is continuously measured with a radiation thermometer 6, A signal representing the temperature change is input to the control device 9.
落下点Ａに達した溶滓流１１は当板３に衝突し
て当板３の表面を滑つて拡散直径S1まで連続した
状態で拡がる。拡散直径S1上で溶滓の厚みがｂに
なると溶滓の表面張力が厚みｂを薄くする力より
打ち勝つて溶滓がちぎれ、滓粒となつて溶滓軌跡
５を描きながら落下する。 The slag flow 11 that has reached the falling point A collides with the contact plate 3, slides on the surface of the contact plate 3, and spreads continuously up to the diffusion diameter S1 . When the thickness of the slag becomes b on the diffusion diameter S1 , the surface tension of the slag overcomes the force that reduces the thickness b, and the slag breaks off, becoming slag particles and falling while tracing a slag trajectory 5.
溶滓軌跡５を描きながら落下する滓粒の粒径を
ｄ、溶滓流１１の単位時間当りの落下流量をＱ、
拡散直径S1における溶滓速度をυとすると、
ｄ∝Ｑ＝πS1∝ｂ
となる。粒径ｄは溶滓が連続した状態でどこまで
拡がるかという拡散直径S1に左右されることにな
り、これに直接影響するのが溶滓の粘度であり、
溶滓の粘度は溶滓流１１の温度の関数になる。従
つて滓流１１の温度が低下して来れば落下点Ａで
の滓流落下速度を大きくし、落下点Ａにおける溶
滓初速υ０を大きくして拡散直径S1までの溶滓の
拡がりを確保する必要がある。 The particle size of the slag particles falling while drawing the slag trajectory 5 is d, the falling flow rate per unit time of the slag flow 11 is Q,
If the slag velocity at the diffusion diameter S 1 is υ, then d∝Q=πS 1 ∝b. The particle size d depends on the diffusion diameter S1 , which is how far the slag spreads in a continuous state, and this is directly influenced by the viscosity of the slag.
The slag viscosity is a function of the temperature of the slag stream 11. Therefore, when the temperature of the slag flow 11 decreases, the falling speed of the slag flow at the falling point A is increased, and the initial velocity of the slag υ 0 at the falling point A is increased to increase the spread of the slag to the diffusion diameter S 1 . It is necessary to secure it.
開孔４より落下点Ａまでの距離をＨとすると、
υ０∝（Ｈ＋ｈ）
であり、距離Ｈを一定とすると、溶滓レベルｈを
増すことになる。 If the distance from the opening 4 to the falling point A is H, then υ 0 ∝(H+h), and if the distance H is constant, the slag level h will increase.
一方、開孔４の面積をS2とすると、
Ｑ∝ｈ・S2・Ｋ
となる。ここでＫは開孔４の形状と溶滓の粘度と
に影響される係数であるが、開口４の形状が一定
であるとすると、係数Ｋは溶滓の粘度すなわち溶
滓流１１の温度の関数となる。したがつて溶滓流
温度が低下すれば、溶滓レベルｈを高くする必要
がある。 On the other hand, if the area of the opening 4 is S 2 , then Q∝h・S 2・K. Here, K is a coefficient that is influenced by the shape of the opening 4 and the viscosity of the molten slag, but if the shape of the opening 4 is constant, the coefficient K is a coefficient of the viscosity of the slag, that is, the temperature of the slag flow 11. Becomes a function. Therefore, if the slag flow temperature decreases, it is necessary to increase the slag level h.
これを総合的にみると、開孔４、さらには落下
点Ａにおける溶滓流１１の温度が影響して粒径ｄ
および落下流量Ｑすなわち造粒量が変化すること
になる。そこで本発明においては輻射温度計６等
によつて溶滓温度を連続的に測定し、この温度変
化の信号を制御装置９に入力し、駆動装置１０を
作動させて仕切板７を昇降し、その時点の溶滓温
度に見合つた溶滓レベルｈになるように制御す
る。駆動装置１０の停止は溶滓レベル計８の信号
によつて行う。 If we look at this comprehensively, the temperature of the slag flow 11 at the opening 4 and furthermore at the falling point A influences the particle size d.
And the falling flow rate Q, that is, the amount of granulation changes. Therefore, in the present invention, the slag temperature is continuously measured using a radiation thermometer 6 or the like, a signal of this temperature change is inputted to the control device 9, and the drive device 10 is operated to move the partition plate 7 up and down. It is controlled so that the slag level h corresponds to the slag temperature at that time. The driving device 10 is stopped by a signal from the slag level meter 8.
第２図に示す装置においては、開孔４から流下
する溶滓流の温度を測定する場合について説明し
たが、輻射温度計６は直接開孔４上の溶滓温度を
測定することも可能である。さらに開孔４の面積
S2を変化可能にして溶滓の流出量、流出速度を制
御することもできる。 In the apparatus shown in FIG. 2, a case has been described in which the temperature of the slag flowing down from the aperture 4 is measured, but the radiation thermometer 6 can also directly measure the temperature of the slag above the aperture 4. be. Furthermore, the area of opening 4
It is also possible to control the outflow amount and speed of slag by making S 2 variable.
温度変化による流出量の変化が少ない場合に
は、速度を高めるために溶滓レベルｈを大きくす
ると、流出量まで大きく変わることになる。その
時には開孔４の部分に制御棒を入れる等して開孔
４の面積S2を変化させることもできる。 If the change in outflow amount due to temperature change is small, increasing the slag level h to increase the speed will result in a large change in the outflow amount. At that time, the area S 2 of the opening 4 can be changed by inserting a control rod into the opening 4 or the like.
以上のように本発明は、溶滓の粘性係数となる
溶滓温度をほぼ連続的に測定すると共に樋の溶滓
レベルをほぼ連続的に測定し溶滓温度が変化した
場合にも溶滓レベルを制御して溶滓の流出量、速
度を制御することにより、造粒量を一定にして冷
却槽での熱負荷を一定とし、熱交換効率を高めて
安定した熱回収をすることができ、滓粒の粒径変
化を少なくして製品の質的向上をはかることがで
きる。 As described above, the present invention measures the slag temperature, which is the viscosity coefficient of the slag, almost continuously, and also almost continuously measures the slag level in the gutter, so that even when the slag temperature changes, the slag level remains constant. By controlling the outflow amount and speed of slag, the amount of granulation can be kept constant, the heat load in the cooling tank can be kept constant, the heat exchange efficiency can be increased, and heat can be recovered stably. It is possible to improve the quality of the product by reducing the change in particle size of the slag particles.
第１図は従来における造粒装置の一例の縦断面
図、第２図は本発明の装置の一実施例の縦断面図
である。
２……樋、５……溶滓軌跡、６……輻射温度
計、８……溶滓レベル計、１１……溶滓流。
FIG. 1 is a longitudinal cross-sectional view of an example of a conventional granulation apparatus, and FIG. 2 is a longitudinal cross-sectional view of an embodiment of the apparatus of the present invention. 2...Gutter, 5...Slag trajectory, 6...Radiation thermometer, 8...Slag level meter, 11...Slag flow.
Claims (1)
を底面に備えた樋と該樋の開孔から流下した溶滓
が衝突して粒状化する当板を備えた滓粒造粒装置
において、溶滓鍋から樋内の開孔が設置されてい
ない側に流し込まれた溶滓が樋内の開孔設置側へ
流れるのを制御することにより樋内の開孔設置側
の溶滓レベルを制御する昇降自在な仕切板と、該
仕切板で仕切られた樋内の開孔設置側の溶滓レベ
ルを連続的に測定する溶滓レベル計と、開孔から
流下する溶滓流の溶滓温度若しくは樋内の開孔上
の溶滓温度を連続的に測定する温度計と、前記溶
滓レベル計からのレベル信号及び温度計からの温
度信号をもとに樋内の開孔設置側溶滓レベルが溶
滓温度に見合つた溶滓レベルになるよう前記仕切
板を昇降させる駆動装置を作動させる制御装置を
設けたことを特徴とする滓粒造粒装置における滓
流制御装置。1. In a slag granulation device equipped with a gutter having an opening on the bottom surface through which the slag poured from the slag pot flows down, and a plate on which the slag flowing down from the opening of the gutter collides and becomes granulated. By controlling the flow of the slag poured into the side of the gutter from the slag pan to the side of the gutter where the open hole is installed, the level of the slag on the side of the gutter where the open hole is installed is controlled. A partition plate that can be raised and lowered to control, a slag level meter that continuously measures the slag level on the side where the opening is installed in the gutter partitioned by the partition plate, and a slag flow that flows down from the opening. A thermometer that continuously measures the temperature or the temperature of the molten slag above the opening in the gutter, and a thermometer that measures the temperature of the slag on the side where the opening in the gutter is installed based on the level signal from the slag level meter and the temperature signal from the thermometer. 1. A slag flow control device for a slag granulation device, comprising a control device that operates a drive device that moves the partition plate up and down so that the slag level corresponds to a slag temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256279A JPS55104642A (en) | 1979-02-06 | 1979-02-06 | Controlling method for sludge flow in granulation of sludge grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256279A JPS55104642A (en) | 1979-02-06 | 1979-02-06 | Controlling method for sludge flow in granulation of sludge grain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55104642A JPS55104642A (en) | 1980-08-11 |
| JPS62861B2 true JPS62861B2 (en) | 1987-01-09 |
Family
ID=11808779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1256279A Granted JPS55104642A (en) | 1979-02-06 | 1979-02-06 | Controlling method for sludge flow in granulation of sludge grain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55104642A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59206035A (en) * | 1983-05-10 | 1984-11-21 | Mitsubishi Heavy Ind Ltd | Air crushing apparatus of high-temperature molten slag |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124193A (en) * | 1977-04-05 | 1978-10-30 | Nippon Steel Corp | Production of granulated blast furnace slag |
-
1979
- 1979-02-06 JP JP1256279A patent/JPS55104642A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124193A (en) * | 1977-04-05 | 1978-10-30 | Nippon Steel Corp | Production of granulated blast furnace slag |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55104642A (en) | 1980-08-11 |
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