JPH0641615B2 - Auxiliary raw material charging device for pressure converter - Google Patents
Auxiliary raw material charging device for pressure converterInfo
- Publication number
- JPH0641615B2 JPH0641615B2 JP28123089A JP28123089A JPH0641615B2 JP H0641615 B2 JPH0641615 B2 JP H0641615B2 JP 28123089 A JP28123089 A JP 28123089A JP 28123089 A JP28123089 A JP 28123089A JP H0641615 B2 JPH0641615 B2 JP H0641615B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- auxiliary
- auxiliary raw
- pressure
- furnace
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、加圧型転炉に於ける副原料投入装置に関す
る。The present invention relates to an auxiliary raw material charging device in a pressure converter.
吹錬中に転炉上方から炉内に副原料を投入するには、従
来第３図に示す副原料投入装置により行っている。即
ち、原料ホッパー１内の副原料２は、原料ホッパーの下
端に連なる秤量ホッパー３へＮ2ガス噴射ノズル４から
Ｎ2ガスを噴射して外気の侵入を防止し乍ら原料ホッパ
ー１の下端のゲート５を開いて秤量ホッパー３内へ落下
させる。秤量ホッパー３内に定められた量の副原料２′
が切出されるとゲート５が閉じられ、同時にＮ2ガスの
噴射も停止される。秤量ホッパー３で秤量された副原料
２′は、秤量ホッパー３の下端のゲート６を開いて中間
ホッパー７内に落下する。次いで副原料投入信号により
副原料投入シュート８の途中のゲート９が開かれ、同時
に転炉からのＣＯガスの噴き上げを防止する為、中間ホ
ッパー７及び副原料投入シュート８へ夫々Ｎ2ガス噴射
ノズル10及び11からＮ2ガスを噴き込み、中間ホッパー
７の副原料２／を副原料払出しフィーダー12により副原
料投入シュート８へ払出し、該副原料投入シュート８に
より転炉内へ投入される。The auxiliary raw material charging device shown in FIG. 3 is conventionally used to charge the auxiliary raw material into the furnace from above the converter during blowing. That is, auxiliary materials 2 in the raw material hopper 1, the raw material hopper to the weighing hopper 3 connected to the lower end of the N 2 gas injection nozzles 4 N 2 gas by injecting to prevent outside air from entering the lower end of乍Ra material hopper 1 The gate 5 is opened and dropped into the weighing hopper 3. Predetermined amount of auxiliary raw material 2'in the weighing hopper 3
When is cut out, the gate 5 is closed, and at the same time, the injection of N 2 gas is stopped. The auxiliary raw material 2 ′ weighed by the weighing hopper 3 drops into the intermediate hopper 7 by opening the gate 6 at the lower end of the weighing hopper 3. Next, the gate 9 in the middle of the auxiliary raw material charging chute 8 is opened by the auxiliary raw material charging signal, and at the same time, in order to prevent the CO gas from being blown up from the converter, the N 2 gas injection nozzles are respectively fed to the intermediate hopper 7 and the auxiliary raw material charging chute 8. N 2 gas is injected from 10 and 11 and the auxiliary raw material 2 / of the intermediate hopper 7 is discharged to the auxiliary raw material charging chute 8 by the auxiliary raw material discharging feeder 12 and is charged into the converter by the auxiliary raw material charging chute 8.
ところで、上記の副原料投入装置は、副原料払出しフィ
ーダー12に所謂振動フィーダーが用いられる為、この部
分の振動が低部位へ伝わることを防ぎ且つ振動フィーダ
ーの動きを阻害させないように中間ホッパー７と振動フ
ィーダーの間及び振動フィーダーと副原料投入シュート
９の間にシール性の悪いエキスパンションを用いてい
る。この為副原料投入時には炉内ガスの噴き出しを防止
する為、前述の如く中間ホッパー７及び副原料投入シュ
ート８へ夫々Ｎ2ガス噴出ノズル10及び11からＮ2ガスを
噴き込んでいる。By the way, since the so-called vibration feeder is used for the auxiliary raw material feeding feeder 12 in the above-mentioned auxiliary raw material feeding device, the intermediate hopper 7 is provided so as to prevent the vibration of this portion from being transmitted to a low portion and to prevent the movement of the vibrational feeder from being disturbed. Expansions having poor sealing properties are used between the vibrating feeders and between the vibrating feeders and the auxiliary material charging chute 9. Therefore to prevent breaking-out of the in-furnace gas at the time of secondary raw material input, is crowded Spray the N 2 gas from the intermediate hopper 7 and auxiliary raw material charging chute 8 to the respective N 2 gas jet nozzle 10 and 11 as described above.
然し乍ら、このような手段では原料投入装置を完全にシ
ールすることができない。また炉内には爆発性の有毒な
ＣＯガスが充満しており、炉内ガス圧力が上昇した場合
にこのＣＯガスが系外へ漏れ出ないようにするには大量
のＮ2ガスが必要となり、現実の設備では副原料投入時
の炉内圧には自から限界が生じ、加圧操業の転炉では原
料投入時に系内の圧力を降下させる必要があり、運転手
順の複雑化、降圧、昇圧に時間がかかり、製鋼作業の能
率低下を招いていた。However, the raw material charging device cannot be completely sealed by such means. Further, the furnace is filled with explosive and toxic CO gas, and a large amount of N 2 gas is required to prevent the CO gas from leaking out of the system when the gas pressure in the furnace rises. However, in the actual equipment, the pressure inside the furnace at the time of feeding the auxiliary raw material has its own limit, and it is necessary to lower the pressure in the system at the time of feeding the raw material in the pressure converter, which complicates the operating procedure, lowers the pressure, and raises the pressure. It took a long time to reduce the efficiency of the steelmaking work.
そこで本発明は、加圧型転炉へ副原料を投入する際炉内
の圧力を降下させることなく加圧状態で副原料を炉内に
投入できるようにした加圧型転炉に於ける副原料投入装
置を提供しようとするものである。In view of this, the present invention is capable of charging the auxiliary raw material into the furnace in a pressurized state without lowering the pressure in the furnace when charging the auxiliary raw material into the pressure converter. It is intended to provide a device.
上記課題を解決するための本発明の加圧型転炉に於ける
副原料投入装置は、吹錬中に転炉上方から転炉内に副原
料を投入する副原料投入装置に於いて、上方に遮断弁を
有する少くとも１個の副原料受け入れ口を備えたホッパ
ーに内部を加圧する為の開閉弁を有する不活性ガス噴出
通路と不活性ガス放出通路を設け、少くとも前記中間ホ
ッパーの下部を含むその下部に取付けられた副原料払出
しフィーダーを開閉弁を有する不活性ガス噴出通路と不
活性ガス放出通路を備えた圧力容器内に収納し、該圧力
容器の底を貫通して副原料投入シュートの入口を前記副
原料払出しフィーダーの払出し口に臨ませると共にその
途中に遮断弁を設け、該遮断弁よりも転炉側の副原料投
入シュートの途中に炉内ガス圧力検出装置を設け、副原
料投入時に前記検出装置により検出される炉内ガス圧力
と等しい圧力となるように前記不活性ガス噴出通路を開
いて中間ホッパーと圧力容器内に不活性ガスを噴入し
て、副原料を副原料払出しフィーダーの駆動により副原
料投入シュートを通して炉内に投入するようにしたこと
を特徴とするものである。The auxiliary raw material charging device in the pressure converter of the present invention for solving the above-mentioned problems is an auxiliary raw material charging device for charging the auxiliary raw material into the converter from above the converter during blowing. A hopper having at least one auxiliary raw material receiving port having a shutoff valve is provided with an inert gas ejection passage and an inert gas discharge passage having an opening / closing valve for pressurizing the inside, and at least a lower portion of the intermediate hopper is provided. An auxiliary raw material feeding feeder attached to the lower part of the auxiliary raw material feeding feeder is housed in a pressure vessel having an inert gas ejection passage having an on-off valve and an inert gas discharge passage, and the auxiliary raw material feeding chute penetrates through the bottom of the pressure vessel. The inlet of the auxiliary raw material feeding feeder is provided with a shutoff valve in the middle thereof, and a furnace gas pressure detection device is provided in the middle of the auxiliary raw material charging chute on the converter side of the shutoff valve. The above inspection at the time of input The inert gas injection passage is opened so that the pressure in the furnace is equal to the gas pressure detected by the device, the inert gas is injected into the intermediate hopper and the pressure vessel, and the auxiliary raw material is fed out to drive the feeder. It is characterized in that it is charged into the furnace through the auxiliary material charging chute.
上述の如く構成された本発明の加圧型転炉に於ける副原
料投入装置により炉内に副原料を投入するには、先ず副
原料受け入れ口の上方の遮断弁を開いて副原料を中間ホ
ッパー内に受け入れて所定量チャージし、遮断弁を閉じ
る。次に炉内ガス圧力検出装置により炉内ガス圧力を検
出し、その検出した炉内ガス圧力と中間ホッパー内及び
圧力容器内の圧力が等しくなるように不活性ガス噴出通
路を開いて中間ホッパー内及び圧力容器内に不活性ガス
を噴き込む。次いで副原料投入シュートの途中の遮断弁
を開き、圧力容器内の副原料払出しフィーダーを駆動し
て中間ホッパー内にチャージした所定量の副原料を副原
料投入シュートへ払出し、ここから副原料を炉内へ投入
する。副原料を炉内へ投入した後、中間ホッパー内及び
圧力容器内の不活性ガスを夫々不活性ガス放出通路を開
いて放出し、不活性ガスの放出終了と同時に不活性噴出
通路を閉じて不活性ガスの噴き込みを終了させる。そし
て再び副原料受け入れ口の上方の遮断弁を開いて副原料
を中間ホッパー内に受け入れて所定量チャージし、遮断
弁を閉じる。以後前記と同じ工程が行われる。かくして
加圧型転炉の炉内圧力を降下させることなく、加圧状態
で副原料を炉内へ投入することができる。In order to charge the auxiliary raw material into the furnace by the auxiliary raw material charging device in the pressure type converter of the present invention configured as described above, first, the shutoff valve above the auxiliary raw material receiving port is opened and the auxiliary raw material is fed to the intermediate hopper. Received inside and charged a predetermined amount, and closed the shutoff valve. Next, the in-furnace gas pressure detection device detects the in-furnace gas pressure, and the inert gas ejection passage is opened so that the detected in-furnace gas pressure becomes equal to the pressure in the intermediate hopper and pressure vessel. And inject an inert gas into the pressure vessel. Next, open the shut-off valve in the middle of the auxiliary material charging chute, drive the auxiliary material discharging feeder in the pressure vessel, and discharge the specified amount of auxiliary material charged in the intermediate hopper to the auxiliary material charging chute, from which the auxiliary material is fed to the furnace. Throw in. After the auxiliary raw material is charged into the furnace, the inert gas in the intermediate hopper and the pressure vessel is released by opening the inert gas release passages, respectively, and at the same time as the end of the release of the inert gas, the inert jet passage is closed and the inert gas is closed. The injection of active gas is terminated. Then, the shut-off valve above the sub-raw material receiving port is opened again to receive the sub-raw material in the intermediate hopper, charge a predetermined amount, and close the shut-off valve. Thereafter, the same steps as described above are performed. Thus, the auxiliary raw material can be charged into the furnace in a pressurized state without lowering the furnace pressure of the pressure converter.
本発明の加圧型転炉に於ける副原料投入装置の一実施例
を第１図によって説明すると、15，15′は副原料の秤量
ホッパーで、その下端に夫々副原料払出しフィーダー1
6，16′が設けられ、その副原料払出しフィーダー16，1
6′の払出し口17，17′が中間ホッパー18の上面に備え
た遮断弁19，19′を有する副原料受け入れ口20，20′に
連通されている。中間ホッパー18の下部は圧力容器21内
に収納され、中間ホッパー18の下端には圧力容器21内で
副原料払出しフィーダー22が設けられ、その副原料払出
しフィーダー22の払出し口23が圧力容器21内に貫通した
副原料投入シュート24の上端の受け口25内に配されてい
る。副原料投入シュート24の下端は図示せぬが炉口フー
ドを貫通して転炉炉口内に配されている。副原料投入シ
ュート24の上部の途中には遮断弁26が設けられ、その遮
断弁26よりも下方の副原料投入シュート24の途中には炉
内ガス圧力検出装置27が設けられている。前記中間ホッ
パー18及び圧力容器21には夫々不活性ガス噴出通路28，
29が設けられ、その不活性ガス噴出通路28，29の開閉弁
30，31が前記炉内ガス圧力の検出装置27に連繋された制
御装置32により中間ホッパー18及び圧力容器21内が炉内
ガス圧力と等しい圧力となるように開閉制御されるよう
になっている。また前記中間ホッパー18及び圧力容器21
には夫々不活性ガス放出通路33，34が設けられ、その不
活性ガス放出通路33，34に夫々開閉弁35，36が設けられ
ている。An embodiment of the auxiliary raw material charging device in the pressure converter of the present invention will be described with reference to FIG. 1. Reference numerals 15 and 15 'are auxiliary raw material weighing hoppers, and the auxiliary raw material feeding feeders 1 are provided at the lower ends thereof.
6 and 16 'are provided, and their secondary raw material feeding feeders 16 and 1
Discharge ports 17 and 17 'of 6'communicate with auxiliary material receiving ports 20 and 20' having shutoff valves 19 and 19 'provided on the upper surface of the intermediate hopper 18, respectively. The lower part of the intermediate hopper 18 is housed in the pressure vessel 21, and the lower raw material of the intermediate hopper 18 is provided with the auxiliary material delivery feeder 22 in the pressure vessel 21, and the delivery port 23 of the auxiliary material delivery feeder 22 is in the pressure vessel 21. It is arranged in the receiving port 25 at the upper end of the auxiliary raw material charging chute 24 that penetrates through the. Although not shown, the lower end of the auxiliary material charging chute 24 is arranged inside the converter furnace through the furnace hood. A shutoff valve 26 is provided in the middle of the upper part of the auxiliary material charging chute 24, and a furnace gas pressure detection device 27 is provided in the middle of the auxiliary material charging chute 24 below the shutoff valve 26. The intermediate hopper 18 and the pressure vessel 21 have an inert gas ejection passage 28,
29 is provided, and an on-off valve for the inert gas ejection passages 28, 29
A control device 32, which is connected to the in-furnace gas pressure detection device 27, controls the opening and closing of the intermediate hopper 18 and the pressure vessel 21 so that the pressure is equal to the in-furnace gas pressure. . Further, the intermediate hopper 18 and the pressure vessel 21
Inert gas discharge passages 33 and 34 are respectively provided in the above, and on-off valves 35 and 36 are provided in the inert gas discharge passages 33 and 34, respectively.
このように構成された実施例の加圧型転炉に於ける副原
料投入装置により炉内に副原料を投入するには、先ず中
間ホッパー18の上面に備えられている副原料受け入れ口
20，20′のいずれかの、例えば副原料受け入れ口20の遮
断弁19を開き、秤量ホッパー15内の副原料Ａをその下端
の副原料払出しフィーダー16の駆動により払出し口17か
ら払出し、副原料受け入れ口20を通して中間ホッパー18
内に受け入れ、所定量チャージして遮断弁19を閉じる。
次に炉内ガス圧力検出装置27により炉内ガス圧力を検出
し、その検出信号が制御装置32に送られ、この検出信号
により制御装置32が不活性ガス噴出通路28，29の開閉弁
30，31を開く結果、中間ホッパー18内及び圧力容器21内
に不活性ガスが噴き込まれ、炉内ガス圧力と等しい圧力
まで上昇せしめられる。次いで副原料投入シュート24の
途中の遮断弁26を開き、圧力容器21内の副原料払出しフ
ィーダー22を駆動して中間ホッパー18内にチャージした
所定量の副原料Ａを払出し口23より副原料投入シュート
24へ払出し、ここから副原料Ａを炉内へ投入する。副原
料Ａを炉内へ投入した後遮断弁26を閉じると共に中間ホ
ッパー18内及び圧力容器21内の不活性ガスを夫々不活性
ガス放出通路33，34の開閉弁35，36を開いて放出し、不
活性ガスの放出終了と同時に不活性ガス噴出通路28，29
の開閉弁30，31が閉じられて不活性ガスの噴き込みが終
了する。そして再び副原料受け入れ口20の上方の遮断弁
19を開いて副原料Ａを、或いは他方の副原料受け入れ口
20′の上方の遮断弁19′を開いて副原料Ｂを、中間ホッ
パー18内に受け入れて所定量チャージし、遮断弁19或い
は19′を閉じる。以後前記と同じ工程が行われる。かく
して加圧型転炉の炉内圧力を降下させることなく、加圧
状態で副原料ＡやＢを炉内に投入することができる。In order to charge the auxiliary raw material into the furnace by the auxiliary raw material charging device in the pressure type converter of the embodiment configured as described above, first, the auxiliary raw material receiving port provided on the upper surface of the intermediate hopper 18 is provided.
20 or 20 ', for example, the shut-off valve 19 of the auxiliary raw material receiving port 20 is opened, and the auxiliary raw material A in the weighing hopper 15 is discharged from the discharging outlet 17 by driving the auxiliary raw material feeding feeder 16 at the lower end thereof. Intermediate hopper 18 through receiving port 20
It is received inside, and a predetermined amount is charged, and the shutoff valve 19 is closed.
Next, the in-furnace gas pressure detection device 27 detects the in-furnace gas pressure, and the detection signal is sent to the control device 32, which causes the control device 32 to open and close the inert gas ejection passages 28, 29.
As a result of opening 30, 31, the inert gas is injected into the intermediate hopper 18 and the pressure vessel 21, and the pressure is raised to a pressure equal to the gas pressure in the furnace. Next, the shut-off valve 26 in the middle of the auxiliary material charging chute 24 is opened, the auxiliary material discharging feeder 22 in the pressure vessel 21 is driven, and a predetermined amount of the auxiliary material A charged in the intermediate hopper 18 is charged from the discharging port 23. shoot
It is discharged to 24 and the auxiliary material A is charged into the furnace from here. After charging the auxiliary material A into the furnace, the shutoff valve 26 is closed and the inert gas in the intermediate hopper 18 and the pressure vessel 21 is released by opening the on-off valves 35 and 36 of the inert gas release passages 33 and 34, respectively. At the same time as the end of the release of the inert gas, the inert gas ejection passages 28, 29
The on-off valves 30 and 31 are closed and the injection of the inert gas is completed. And again, the shutoff valve above the auxiliary material receiving port 20
Open 19 to receive the auxiliary material A or the other auxiliary material receiving port
The shutoff valve 19 'above 20' is opened to receive the auxiliary raw material B in the intermediate hopper 18 and charged by a predetermined amount, and the shutoff valve 19 or 19 'is closed. Thereafter, the same steps as described above are performed. Thus, the auxiliary raw materials A and B can be charged into the furnace in a pressurized state without lowering the furnace pressure of the pressure converter.
上記実施例は副原料Ａ或いはＢをバッヂ式に炉内に投入
する場合であるが、副原料を連続して炉内に投入する場
合には、上記副原料投入装置を複数並列に設けて、切替
使用すると良い。例えば第２図に示す如く副原料投入シ
ュート24の上部を２本に分岐し、この分岐した２本の副
原料投入シュート24a,24bに前記構成の副原料投入装置
を設ける。そして炉内ガス圧力と均圧状態にした一方の
副原料投入装置の副原料投入シュート24aから前記実施
例と同様に所定量の副原料Ａを炉内に投入した後遮断弁
26を閉じると同時に、予め炉内ガス圧力と均圧状態にし
ておいた他方の副原料投入装置の副原料投入シュート24
bの遮断弁26′を開き、圧力容器21′内に副原料払出し
フィーダー22′を駆動して予め中間ホッパー18′にチャ
ージしておいた所定量の副原料Ａを払出し口23′より副
原料投入シュート24bへ払出し、ここから副原料Ａを炉
内へ投入する。こうして２基並列に設けた副原料投入装
置を交互に使用することにより副原料Ａを連続的に加圧
状態の炉内に投入することができる。The above embodiment is a case where the auxiliary raw materials A or B are charged into the furnace in a badge type. However, when the auxiliary raw materials are continuously charged into the furnace, a plurality of the auxiliary raw material charging devices are provided in parallel, It is good to use switching. For example, as shown in FIG. 2, the upper portion of the auxiliary raw material charging chute 24 is branched into two, and the two auxiliary raw material charging chutes 24a, 24b provided with the auxiliary raw material charging device having the above-described configuration. Then, after a predetermined amount of the auxiliary raw material A is charged into the furnace from the auxiliary raw material charging chute 24a of one of the auxiliary raw material charging devices that is equalized with the gas pressure in the furnace, the shut-off valve
At the same time as 26 is closed, the auxiliary raw material charging chute of the other auxiliary raw material charging device that has been equalized with the gas pressure in the furnace in advance 24
The shutoff valve 26 'of b is opened, the auxiliary material delivery feeder 22' is driven into the pressure vessel 21 ', and a predetermined amount of the auxiliary material A charged in advance in the intermediate hopper 18' is delivered from the delivery port 23 '. The material is discharged to the charging chute 24b, and the auxiliary raw material A is charged into the furnace from here. In this way, by alternately using the auxiliary raw material charging devices provided in parallel with each other, two auxiliary raw materials A can be continuously charged into the pressurized furnace.
尚、この実施例に於いて加圧状態の炉内に連続的に投入
する副原料はＡに限るものではなく、Ａ，Ｂと交互に切
替えながら連続的に投入する場合もあり、或いはＡ，
Ｂ，Ｃ，Ｄと順次切替えながら連続的に投入する場合も
ある。このような場合、一方の副原料投入装置側の秤量
ホッパー15，15′に副原料Ａ，Ｂが供給され、他方の副
原料投入装置の秤量ホッパー15，15′に副原料Ａ，Ｂ或
いはＣ，Ｄが供給されるものである。In this embodiment, the auxiliary raw material continuously charged into the pressurized furnace is not limited to A, but may be continuously charged by alternately switching A and B.
In some cases, B, C, and D are sequentially switched and continuously charged. In such a case, the auxiliary raw materials A and B are supplied to the weighing hoppers 15 and 15 'on one side of the auxiliary raw material feeding device, and the auxiliary raw materials A, B and C are fed to the weighing hoppers 15 and 15' of the other auxiliary raw material feeding device. , D are supplied.
また中間ホッパー18，18′の副原料受け入れ口20，20′
に接続される副原料供給手段は、上記実施例の秤量ホッ
パー15，15′、副原料払出しフィーダー16，16′に限る
ものではない。Also, the auxiliary raw material receiving ports 20, 20 'of the intermediate hoppers 18, 18'
The auxiliary raw material supply means connected to is not limited to the weighing hoppers 15 and 15 'and the auxiliary raw material feeding feeders 16 and 16' of the above embodiment.
以上の説明で判るように本発明の加圧型転炉に於ける副
原料投入装置によれば、加圧型転炉へ副原料を投入する
際、従来のように炉内の圧力を降下させる必要が無く、
加圧状態で副原料を炉内に投入できるので、加圧操業の
転炉に於ける運転手順が簡素化され、且つ従来降圧、昇
圧に要した時間が削減されて製鋼作業の能率が著しく向
上するものである。As can be seen from the above description, according to the auxiliary raw material charging device in the pressure converter of the present invention, when the auxiliary raw material is charged into the pressure converter, it is necessary to lower the pressure in the furnace as in the conventional case. Without
Since the auxiliary raw material can be put into the furnace under pressure, the operating procedure in the converter for pressure operation is simplified, and the time required for conventional step-down and step-up pressure is reduced and the efficiency of steelmaking is significantly improved. To do.
第１図は本発明の加圧型転炉に於ける副原料投入装置の
一実施例を示す図、第２図は他の実施例を示す図、第３
図は従来の転炉に於ける副原料投入装置を示す図であ
る。 18，18′…中間ホッパー、19，19′…遮断弁 20，20′…副原料受け入れ口 21，21′…圧力容器 22，22′…副原料払出しフィーダー 23，23′…払出し口 24,24a,24b…副原料投入シュート 26，26′…遮断弁 27…炉内ガス圧力検出装置 28，29…不活性ガス噴出通路 30，31…開閉弁、32…制御装置 33，34…不活性ガス放出通路、35，36…開閉弁FIG. 1 is a diagram showing an embodiment of an auxiliary raw material charging device in a pressure converter of the present invention, FIG. 2 is a diagram showing another embodiment, and FIG.
The figure is a diagram showing an auxiliary raw material charging device in a conventional converter. 18, 18 '... Intermediate hopper, 19, 19' ... Shut-off valve 20, 20 '... Sub-material receiving port 21, 21' ... Pressure vessel 22, 22 '... Sub-material delivery feeder 23, 23' ... Delivery port 24, 24a , 24b ... Auxiliary material charging chute 26, 26 '... Shut-off valve 27 ... Furnace gas pressure detection device 28, 29 ... Inert gas ejection passage 30, 31 ... Open / close valve, 32 ... Control device 33, 34 ... Inert gas discharge Passageways, 35, 36 ... Open / close valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊地知 勝弘 福岡県北九州市戸畑区大字中原46番地の59 日鐵プラント設計株式会社内 (72)発明者 藤倉 信幸 東京都江東区南砂２丁目４番25号 川崎重 工業株式会社東京設計事務所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Ichi, 59, Nippon Steel Plant Design Co., Ltd. 46 Nakahara, Tobata-ku, Kitakyushu, Fukuoka Prefecture (72) Inventor Nobuyuki Fujikura 2-4-25 Minamisuna, Koto-ku, Tokyo No. Kawasaki Heavy Industries Ltd. Tokyo Design Office
Claims (1)
入する副原料投入装置に於いて、上方に遮断弁を有する
少くとも１個の副原料受け入れ口を備えた中間ホッパー
に内部を加圧する為の開閉弁を有する不活性ガス噴出通
路と不活性ガス放出通路を設け、少くとも前記中間ホッ
パーの下部を含みその下部に取付けられた副原料払出し
フィーダーを加圧用の不活性ガス噴出装置と不活性ガス
を放出する装置を備えた圧力容器内に収納し、該圧力容
器の底を貫通して副原料投入シュートの入口を前記副原
料払出しフィーダーの払出し口に臨ませると共にその途
中に遮断弁を設け、該遮断弁よりも転炉側の副原料投入
シュートの途中に炉内ガス圧力検出装置を設け、副原料
投入時に前記検出装置により検出される炉内ガス圧力と
等しい圧力となるように前記不活性ガス噴出通路を開い
て中間ホッパーと圧力容器内に不活性ガスを噴入して、
副原料を副原料払出しフィーダーの駆動により副原料投
入シュートを通し炉内に投入するようにしたことを特徴
とする加圧型転炉に於ける副原料投入装置。1. An intermediate hopper having at least one auxiliary raw material receiving port having a shut-off valve in an auxiliary raw material charging device for charging the auxiliary raw material into the converter from above the converter during blowing. An inert gas ejection passage having an opening / closing valve for pressurizing the inside and an inert gas discharge passage are provided, and an auxiliary raw material feeding feeder attached to the lower portion of the intermediate hopper at least including the lower portion of the intermediate hopper is activated for pressurization. It is housed in a pressure vessel equipped with a gas ejection device and a device for discharging an inert gas, and the inlet of the auxiliary raw material feeding chute is made to pass through the bottom of the pressure vessel and faces the delivery outlet of the auxiliary raw material delivery feeder. A shutoff valve is provided on the way, a furnace gas pressure detection device is provided in the middle of the auxiliary material charging chute on the converter side of the shutoff valve, and a pressure equal to the furnace gas pressure detected by the detection device at the time of charging the auxiliary material. Becomes Uni above with bubbler an inert gas into the intermediate hopper and the pressure vessel by opening the inert gas injection passage,
An auxiliary material feeding device in a pressure converter, wherein the auxiliary material is fed into the furnace through an auxiliary material feeding chute by driving an auxiliary material feeding feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28123089A JPH0641615B2 (en) | 1989-10-27 | 1989-10-27 | Auxiliary raw material charging device for pressure converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28123089A JPH0641615B2 (en) | 1989-10-27 | 1989-10-27 | Auxiliary raw material charging device for pressure converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03140409A JPH03140409A (en) | 1991-06-14 |
| JPH0641615B2 true JPH0641615B2 (en) | 1994-06-01 |
Family
ID=17636179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28123089A Expired - Fee Related JPH0641615B2 (en) | 1989-10-27 | 1989-10-27 | Auxiliary raw material charging device for pressure converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641615B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010112983A (en) * | 2000-06-15 | 2001-12-24 | 이구택 | Charging apparatus for non-oxidizing alloy iron through converter charging-dome |
| JP4777056B2 (en) * | 2005-12-05 | 2011-09-21 | 新日本製鐵株式会社 | Raw material input control method |
| KR100698755B1 (en) * | 2005-12-23 | 2007-03-23 | 주식회사 포스코 | Apparatus for inserting ferro-alloy |
| JP4742860B2 (en) * | 2005-12-27 | 2011-08-10 | Ｊｆｅスチール株式会社 | Gas leak prevention method and gas leak prevention device from auxiliary material charging chute of molten metal melting furnace |
| KR100812015B1 (en) * | 2006-07-11 | 2008-03-10 | 주식회사 포스코 | Apparatus with single ring-structure for inserting ferro-alloy |
| KR100812018B1 (en) * | 2006-08-23 | 2008-03-10 | 주식회사 포스코 | Apparatus with spreading part for inserting ferro-alloy |
| KR100812017B1 (en) * | 2006-08-23 | 2008-03-10 | 주식회사 포스코 | Method for laddle treatment |
| WO2011153818A1 (en) * | 2010-06-10 | 2011-12-15 | 河北文丰钢铁有限公司 | Preheating and shoot-feeding system for raw material |
| JP5626860B2 (en) * | 2010-07-20 | 2014-11-19 | 新日鉄住金エンジニアリング株式会社 | Waste melting furnace waste and secondary material charging equipment |
| JP6365443B2 (en) * | 2015-06-30 | 2018-08-01 | 住友金属鉱山株式会社 | Method for producing nickel oxide powder |
-
1989
- 1989-10-27 JP JP28123089A patent/JPH0641615B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03140409A (en) | 1991-06-14 |
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