JPS6233285B2 - - Google Patents
Info
- Publication number
- JPS6233285B2 JPS6233285B2 JP57154196A JP15419682A JPS6233285B2 JP S6233285 B2 JPS6233285 B2 JP S6233285B2 JP 57154196 A JP57154196 A JP 57154196A JP 15419682 A JP15419682 A JP 15419682A JP S6233285 B2 JPS6233285 B2 JP S6233285B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- aluminum
- molten
- steel
- furnace wall
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 101
- 229910052782 aluminium Inorganic materials 0.000 claims description 100
- 229910000831 Steel Inorganic materials 0.000 claims description 57
- 239000010959 steel Substances 0.000 claims description 57
- 238000002844 melting Methods 0.000 claims description 44
- 230000008018 melting Effects 0.000 claims description 44
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 description 35
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 238000007254 oxidation reaction Methods 0.000 description 13
- 239000011261 inert gas Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009991 scouring Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鋼浴中脱酸処理装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deoxidizing treatment device in a steel bath.
銑鉄から鋼に精練する場合、溶銑中の不要な諸
元素を酸化除去して成分調整すると共にその高い
酸化反応熱によつて溶融状態を維持するために、
溶銑中に多量の酸素を吹き込むものであるが、こ
の酸化精練の過程に於ける前記の吹き込み酸素
は、溶銑中の不要な諸元素の除去、即ち脱炭、脱
硫及び脱燐などを行なう一方、その他の大部分の
酸素は鋼浴中に含まれたまま多量に残留すること
になる。
When refining pig iron into steel, in order to adjust the composition by oxidizing and removing unnecessary elements in the hot metal, and to maintain the molten state by the high heat of the oxidation reaction,
A large amount of oxygen is blown into the hot metal, and the blown oxygen in the oxidation scouring process removes unnecessary elements in the hot metal, such as decarburization, desulfurization, and dephosphorization. Most of the other oxygen remains in the steel bath in large amounts.
然るに、この鋼中酸素は鋼塊を造る段階に於い
て必ずしも必要としないばかりか、用途によつて
はむしろ有害となるものであり、特にキルド鋼又
はセミキルド鋼を造塊する上で脱酸処理は必要不
可欠である。 However, this oxygen in steel is not only not necessarily necessary at the stage of making steel ingots, but may even be harmful depending on the use. is essential.
而して、鋼中酸素は鋼中に含まれているマンガ
ン及びシリコンと反応するのでその一部は脱酸反
応を行なうが、これだけでは脱酸が不充分である
から、従来は脱酸剤として強制脱酸力を有するア
ルミニウム材を使用し、これを鋼浴中に投入して
脱酸処理を行なつている。 Oxygen in the steel reacts with the manganese and silicon contained in the steel, so some of it undergoes a deoxidizing reaction, but this alone is insufficient for deoxidizing, so conventionally it was used as a deoxidizing agent. An aluminum material with forced deoxidizing power is used and placed in a steel bath for deoxidation treatment.
このアルミニウム材は、１Kgインゴツト、或い
はブリケツト状やシヨツト状の脱酸用アルミニウ
ム加工品を使用しており、この脱酸用アルミニウ
ム加工品を酸化精練終了後の鋼浴中に投入する
と、鋼中酸素と結合して酸化反応を促してアルミ
ナになるので、これを除滓することによつて脱酸
が行われるものである。 This aluminum material uses a 1Kg ingot, or a briquette-shaped or shot-shaped deoxidizing aluminum processed product.When this deoxidizing aluminum processed product is placed in a steel bath after oxidation scouring, oxygen in the steel is removed. It combines with alumina to promote an oxidation reaction to form alumina, and deoxidation is performed by removing the slag.
しかしながら、上記の脱酸用アルミニウム加工
品を製造する場合、多くの製造工数を要し且つ各
種機械設備を必要とするので製造コストが極めて
高くつき、また脱酸用アルミニウム加工品の炉内
投入作業に多くの時間と手数を要するなどの不利
を招来していた。 However, when manufacturing the above-mentioned deoxidizing aluminum processed products, it requires many manufacturing steps and various mechanical equipment, making the manufacturing cost extremely high. This resulted in disadvantages such as requiring a lot of time and effort.
しかも、前記脱酸用アルミニウム加工品は固形
物であるから、これを鋼浴中に投入すると加工品
の表面形状及び大きさの差異に起因して酸化反応
時間にバラツキを生じ、またこのアルミニウム加
工品が溶融して鋼中酸素と反応するのに比較的時
間が掛かると共に、大量に投入された脱酸用アル
ミニウム加工品のうちの一部は酸化反応の遅れと
相俟て完全に溶解されないままスラグと共に除去
されるので、アルミニウムの歩留りは低いもので
あつた。 Moreover, since the aluminum processed product for deoxidization is a solid substance, when it is put into a steel bath, the oxidation reaction time will vary due to differences in the surface shape and size of the processed product. It takes a relatively long time for the product to melt and react with the oxygen in the steel, and some of the large quantities of aluminum processed products used for deoxidation are not completely melted due to the delay in the oxidation reaction. Since the aluminum was removed along with the slag, the yield of aluminum was low.
そこで、従来、密閉容器内で予めアルミニウム
加工品を溶解した後、溶解した溶融アルミニウム
を鋼浴中に添加して脱酸処理を行うようにした技
術が、特開昭57−73115号公報の「溶鋼中への溶
融添加物の添加装置」において提案されている。
この装置によれば、アルミニウム加工品の製造お
よびアルミニウム加工品の炉内装入作業が不要と
なるので、脱酸のための一連の作業工程の大幅な
省力化が実現でき、さらに、溶融アルミニウムが
鋼融酸素と素早く反応するので、酸化反応時間の
大幅な短縮、アルミニウムの歩留まりの大幅な向
上等の効果を奏することができる。また、特公昭
57−25608号公報に開示された「溶鋼へのAl添加
方法」は、アルミニウムの粉末を不活性ガスと共
に溶鋼中に吹込み、この吹込みによる撹拌効果等
によつて効率の良い脱酸処理を可能にしている。 Therefore, a conventional technique was to melt aluminum products in advance in a closed container and then add the molten aluminum to a steel bath for deoxidation treatment, as described in Japanese Patent Application Laid-Open No. 73115/1983. ``Apparatus for adding molten additives into molten steel''.
This device eliminates the need for manufacturing aluminum products and loading the aluminum products into the furnace, resulting in significant labor savings in the deoxidizing process. Since it reacts quickly with molten oxygen, it can produce effects such as significantly shortening the oxidation reaction time and greatly improving the yield of aluminum. Also, Tokko Akira
The "method for adding Al to molten steel" disclosed in Publication No. 57-25608 involves injecting aluminum powder into molten steel together with an inert gas, and using the stirring effect of this injection to achieve efficient deoxidation treatment. making it possible.
ところが、上記「溶鋼へのAl添加方法」にあ
つては、添加用のアルミニウムを粉末の状態で溶
鋼に添加するというものであるから、前述したよ
うに、アルミニウムの粉末加工の費用が高くつく
と共に、溶融アルミニウムに比べて脱酸の効率が
低いという欠点を有している。また、「溶鋼中へ
の溶融添加物の添加装置」にあつては、アルミニ
ウムの溶融に独立の加熱手段を要するので、設備
費、溶解費用が高価になるという不具合を有して
いた。 However, in the above-mentioned "method of adding Al to molten steel," aluminum for addition is added to molten steel in the form of powder, so as mentioned above, the cost of powder processing of aluminum is high and However, it has the disadvantage of lower deoxidizing efficiency than molten aluminum. Furthermore, the ``apparatus for adding molten additives into molten steel'' requires an independent heating means to melt the aluminum, which has the disadvantage of increasing equipment costs and melting costs.
本発明は、上記従来の諸欠点を解消した画期的
な鋼浴中脱酸処理装置の提供を目的とするもので
ある。 The object of the present invention is to provide an epoch-making in-bath deoxidizing treatment apparatus for steel which eliminates the above-mentioned conventional drawbacks.
このため、本第１発明は、炉から発生せる多量
の高熱ガスをアルミニウム溶解炉の炉壁に導いて
この炉壁を加熱するように設け、前記アルミニウ
ム溶解炉に接続した溶融アルミニウム移送用導管
の他端部を冶金反応容器内に収容せる溶鋼中に深
く没入させたことを特徴とするものである。
For this reason, the first invention provides a conduit for transferring molten aluminum connected to the aluminum melting furnace, which is provided so as to guide a large amount of high-temperature gas generated from the furnace to the furnace wall of the aluminum melting furnace and heat the furnace wall. The other end is deeply immersed in molten steel contained in a metallurgical reaction vessel.
また、本第２発明は、炉から発生せる多量の高
熱ガスをアルミニウム溶解炉の内部に導いて炉内
を直接加熱するように設け、前記アルミニウム溶
解炉に接続した溶融アルミニウム移送用導管の他
端部を冶金反応容器内に収容せる溶鋼中に深く没
入させたことを特徴とするものである。 Moreover, the second invention is provided so that a large amount of high-temperature gas generated from the furnace is guided into the interior of the aluminum melting furnace to directly heat the inside of the furnace, and the other end of the molten aluminum transfer conduit connected to the aluminum melting furnace is provided. The metallurgical reactor is characterized by being deeply immersed in molten steel contained in a metallurgical reaction vessel.
〔実施例 １〕
本第１発明の一実施例を第１図に基づいて説明
すれば、以下の通りである。[Embodiment 1] An embodiment of the first invention will be described below based on FIG.
１は酸化精錬後の脱酸処理を必要とする溶鋼Ｃ
を収容せる冶金反応容器であつて、該冶金反応容
器１は、例えば転炉、塩基性電気炉、塩基性平
炉、或いは取鍋であつてもよく、その種類につい
ては問わない。１３はアルミニウム溶解炉であつ
て、脱酸用アルミニウム塊Ａを収容するための内
炉壁１４と、該内炉壁１４の外周部を包囲する外
炉壁１５とから構成されており、この内炉壁１４
と外炉壁１５によつて囲まれた空隙部に内炉壁加
熱用高熱室１６を形成すると共に、前記外炉壁１
５の一端部には高熱ガス供給口１７を、同外炉壁
１５の他端部にガス排出口１８を設けてある。上
記内炉壁１４には、その底壁部中央に炉底孔部が
形成されている。６は上記内炉壁１４の炉底孔部
に一端部６ａを嵌着して連結した溶融アルミニウ
ム移送用導管であつて、該導管６の他端部６ｂを
前記冶金反応容器１の内底部近傍に臨ませて溶鋼
Ｃ中に深く投入してある。７は炉底孔部の前記導
管６の一端開口部６ａに着脱自在に嵌着したスト
ツパー棒、８は前記溶融アルミニウム移送用導管
６の外周部に沿つて設けた加熱ヒーターである。
尚、この加熱ヒーター８の構造等については具体
的に限定しない。前記溶融アルミニウム移送用導
管６の任意の個所には、不活性ガス供給用分岐管
９を分岐接続してある。これは、前記導管６を通
じて送給される溶融アルミニウムＢを、不活性ガ
ス供給用分岐管９から送り込んだアルゴンガス等
の不活性圧力ガスによつて圧力助送しながら、冶
金反応容器１内の溶鋼Ｃ中に吐出して脱酸処理す
るようになつている。１０は別設せる任意の炉で
ある。この炉１０の種類については問わない。１
１は前記炉１０の頂部開口上方に配設した集熱フ
ードである。１２は一端部を前記集熱フード１１
の排気口部に接続し、他端部をアルミニウム溶解
炉１３の外炉壁１５の高熱ガス供給口１７に接続
した送気ダクト、Ｆは前記送気ダクト１２に取付
けたフアンである。 1 is molten steel C that requires deoxidation treatment after oxidation refining
The metallurgical reaction vessel 1 may be, for example, a converter, a basic electric furnace, a basic open hearth, or a ladle, and the type thereof is not limited. Reference numeral 13 denotes an aluminum melting furnace, which is composed of an inner furnace wall 14 for accommodating the deoxidizing aluminum ingot A, and an outer furnace wall 15 surrounding the outer periphery of the inner furnace wall 14. Furnace wall 14
A high-temperature chamber 16 for heating the inner furnace wall is formed in a gap surrounded by the outer furnace wall 15 and the outer furnace wall 1.
A high-temperature gas supply port 17 is provided at one end of the outer furnace wall 5, and a gas discharge port 18 is provided at the other end of the outer furnace wall 15. The inner furnace wall 14 has a furnace bottom hole formed in the center of its bottom wall. Reference numeral 6 denotes a molten aluminum transfer conduit whose one end 6a is fitted into and connected to the bottom hole of the inner furnace wall 14, and the other end 6b of the conduit 6 is connected to the inner bottom of the metallurgical reaction vessel 1. It was placed deeply into molten steel C with the steel facing up. Reference numeral 7 denotes a stopper rod detachably fitted into the opening 6a at one end of the conduit 6 in the furnace bottom hole, and 8 is a heater provided along the outer periphery of the conduit 6 for transferring molten aluminum.
Note that the structure of the heater 8 is not specifically limited. A branch pipe 9 for supplying an inert gas is connected to an arbitrary point of the molten aluminum transport pipe 6. This is carried out while the molten aluminum B fed through the conduit 6 is pressure-assisted by an inert pressure gas such as argon gas fed from the inert gas supply branch pipe 9 into the metallurgical reaction vessel 1. It is designed to be discharged into molten steel C for deoxidation treatment. 10 is an optional furnace that is separately provided. The type of furnace 10 does not matter. 1
Reference numeral 1 denotes a heat collecting hood disposed above the top opening of the furnace 10. 12 connects one end to the heat collecting hood 11
An air supply duct is connected to the exhaust port of the aluminum melting furnace 13 and the other end thereof is connected to the high-temperature gas supply port 17 of the outer furnace wall 15 of the aluminum melting furnace 13. F is a fan attached to the air supply duct 12.
上記の構成に於いて、冶金反応容器１の内部に
収容せる溶鋼Ｃを脱酸処理する場合、先ず、スト
ツパー棒７によつて炉底孔部を閉塞し、溶解炉１
３の内炉壁１４の内部に脱酸用アルミニウム塊Ａ
を装入した後、フアンＦを作動させてこれを溶解
して、脱酸用アルミニウム塊Ａを溶融状態にして
おく。ここで、別設炉１０の稼動によつて炉内か
らは1000℃以上の高熱ガスが多量に発生している
ので、この高熱ガスは集熱フード１１へ送られ、
フアンＦの送風作用によつて送気ダクト１２を介
して溶解炉１３の外炉壁１５の高熱ガス供給口１
７へ強制的に送り込まれる。溶解炉１３の内炉壁
加熱用高熱室１６に送られた高熱ガスは該高熱室
１６を通過する間に内炉壁１４を加熱し、その後
外炉壁１５のガス排出口１８を通じて外部へ排出
される。高熱ガスが前記内炉壁加熱用高熱室１６
を通過する間に溶解炉の内部を高温に加熱する
が、前記内炉壁１４の内部に装入された脱酸用ア
ルミニウム塊Ａの溶融点（659℃）は比較的低い
ので、前記高熱ガスの熱量によつて溶解され、溶
融アルミニウムＢが得られる。 In the above configuration, when deoxidizing the molten steel C accommodated inside the metallurgical reaction vessel 1, first, the bottom hole of the furnace is closed with the stopper rod 7, and the melting furnace 1 is closed.
A deoxidizing aluminum block A is placed inside the inner furnace wall 14 of No. 3.
After charging, the fan F is operated to melt it and keep the deoxidizing aluminum lump A in a molten state. Here, due to the operation of the separate furnace 10, a large amount of high-temperature gas of 1000°C or more is generated from inside the furnace, so this high-temperature gas is sent to the heat collecting hood 11,
The high-temperature gas supply port 1 of the outer furnace wall 15 of the melting furnace 13 is passed through the air duct 12 by the blowing action of the fan F.
7 forcibly sent. The high-temperature gas sent to the high-temperature chamber 16 for heating the inner furnace wall of the melting furnace 13 heats the inner furnace wall 14 while passing through the high-temperature chamber 16, and is then discharged to the outside through the gas outlet 18 of the outer furnace wall 15. be done. The high-temperature gas is heated in the high-temperature chamber 16 for heating the inner furnace wall.
The inside of the melting furnace is heated to a high temperature while passing through the melting furnace, but since the melting point (659°C) of the deoxidizing aluminum ingot A charged inside the inner furnace wall 14 is relatively low, the high-temperature gas is melted by the amount of heat, and molten aluminum B is obtained.
一方、冶金反応容器１の内部には、溶銑中の不
要な緒元素の酸化除去、時に脱炭、脱硫、及び脱
燐などを行つて成分調整された溶鋼Ｃが収容され
ており、この鋼浴中には酸化精練の過程に於いて
多量に吹き込まれた酸素の大部分が残留してい
て、鋼浴中の酸素による高い酸化反応熱によつて
鋼は溶融状態に保たれている。 On the other hand, inside the metallurgical reaction vessel 1, molten steel C whose composition has been adjusted by oxidation removal of unnecessary metal elements in the hot metal and sometimes decarburization, desulfurization, and dephosphorization is stored, and this steel bath Most of the oxygen that was blown in in large quantities during the oxidation scouring process remains inside, and the steel is kept in a molten state by the high heat of oxidation reaction caused by the oxygen in the steel bath.
そこで、前記導管６を通じて送給される溶融ア
ルミニウムＢを、不活性ガス供給用分岐管９から
送り込んだアルゴンガス等の不活性圧力ガスによ
つて圧力助送しながら、冶金反応容器１内の溶鋼
Ｃ中に吐出して脱酸処理する。このとき、ストツ
パー棒７は外されていて炉底孔部は開放されてい
る。上記不活性ガスは、前記導管６を通じて送ら
れる溶融アルミニウムＢに対して圧力助送する作
用と共に、溶鋼Ｃ中に送り込まれた溶融アルミニ
ウムＢを鋼浴中において拡散する作用とを併用す
るものであつて、該不活性ガスを溶融アルミニウ
ムＢと同時に溶鋼Ｃ中に送り込むと、不活性ガス
のみ鋼中諸元素とは全く反応せずにそのまま浮上
して外部へ放出される。一方、冶金反応容器１の
内部に収容せる酸化精練終了後の溶鋼Ｃ中に溶融
アルミニウムＢが混入すると、溶融アルミニウム
Ｂと鋼中酸素が結合して酸化反応を促進し、アル
ミナとなつて浮上分離するので、他のスラグＤと
共に除去される。なお、内炉壁１４の内部の溶融
アルミニウムＢは前記不活性ガスによる圧力助送
によつて順次溶融アルミニウム移送用導管６の内
部へ助送されるが、その際、該導管６は加熱ヒー
ター８によつてアルミニウムの溶融温度以上の高
温に常時加熱されているから、該導管６の内部の
溶融アルミニウムＢは溶融状態に保たれたまま導
管６を通じてその他端部６ｂの開口部から冶金反
応容器１の内部の溶鋼Ｃ中に深く送り込まれる。 Therefore, while the molten aluminum B fed through the conduit 6 is pressure-assisted by an inert pressure gas such as argon gas fed from the inert gas supply branch pipe 9, the molten aluminum B in the metallurgical reaction vessel 1 is heated. It is discharged into C and deoxidized. At this time, the stopper rod 7 has been removed and the bottom hole of the furnace is open. The inert gas has the effect of pressure-assisted feeding the molten aluminum B sent through the conduit 6, and the effect of diffusing the molten aluminum B sent into the molten steel C in the steel bath. When the inert gas is fed into the molten steel C at the same time as the molten aluminum B, only the inert gas does not react with the elements in the steel, floats up as it is, and is released to the outside. On the other hand, when molten aluminum B mixes into the molten steel C after oxidation scouring, which is housed inside the metallurgical reaction vessel 1, the molten aluminum B and oxygen in the steel combine to promote the oxidation reaction, become alumina, and float and separate. Therefore, it is removed together with other slag D. The molten aluminum B inside the inner furnace wall 14 is sequentially assisted into the molten aluminum transfer conduit 6 by pressure assisted transport by the inert gas, but at this time, the molten aluminum B is transferred to the inside of the molten aluminum transfer conduit 6. Since the aluminum is constantly heated to a high temperature higher than the melting temperature of aluminum, the molten aluminum B inside the conduit 6 is kept in a molten state through the conduit 6 from the opening of the other end 6b to the metallurgical reaction vessel 1. The steel is sent deep into the molten steel C inside.
〔実施例 ２〕
第２図の実施例は第１図の変形例であつて、ア
ルミニウム溶解炉２９の炉壁胴部に螺旋状の高熱
ガス通過用通孔３０を設け、該通孔３０の一端開
口部に前記送気ダクト１２の連結端部を接続し、
同通孔３０の他端開口部に排出ガスを外部へ導く
ための排気ダクト３１の連結端部を連続した構造
であつて、前記炉１０から集熱フード１１及び送
気ダクト１２を介して送られて来た高熱ガスが溶
解炉２９の螺旋状の前記通孔３０を通過する間に
炉壁内部を加熱するので、炉内のアルミニウム塊
Ａは溶解される。[Embodiment 2] The embodiment shown in FIG. 2 is a modification of the one shown in FIG. Connecting the connecting end of the air supply duct 12 to the opening at one end,
The connecting end of an exhaust duct 31 for guiding exhaust gas to the outside is connected to the opening at the other end of the through hole 30, and the exhaust gas is sent from the furnace 10 through the heat collection hood 11 and the air supply duct 12. The high-temperature gas that has been released heats the inside of the furnace wall while passing through the spiral through hole 30 of the melting furnace 29, so that the aluminum ingot A in the furnace is melted.
尚、溶解された溶融アルミニウムＢを冶金反応
容器１に送り込んで鋼中酸素を脱酸するための構
造は、第１図の実施例と同様である。 The structure for feeding the molten aluminum B into the metallurgical reaction vessel 1 to deoxidize the oxygen in the steel is the same as that of the embodiment shown in FIG.
〔実施例 ３〕
第３図の実施例は、本第２発明の一実施例であ
つて、アルミニウム溶解炉１９の内部に装入せる
脱酸用アルミニウム塊Ａを炉１０から導いた高熱
ガスによつて直接加熱してこれを溶解する構造で
ある。即ち、溶解炉１９の炉内底部の湯溜り部２
０より若干上方の炉壁部に高熱ガス供給口２１を
設けて、該高熱ガス供給口２１を前記送気ダクト
１２に接続すると共に、同溶解炉１９の他壁上部
にガス排出口２２を設け、また同溶解炉１９の炉
底壁部に湯注出口２３を設けて、該湯注出口２３
を、開閉自在なストツパー２４を介して前記溶融
アルミニウム移送用導管６に接続したものであ
る。前記炉１０から発生した多量の高熱ガスは、
集熱フード１１及び送気ダクト１２を介して溶解
炉１９の高熱ガス供給口２１へ送り込まれ、炉内
室２５を通過してガス排出口２２から外部へ排出
されるので、溶解炉１９の内部の炉底湯溜り部２
０に装入せる脱酸用アルミニウム塊Ａは前記高熱
ガスによる炉内室２５の通過の間に直接加熱され
て溶解される。[Embodiment 3] The embodiment shown in FIG. 3 is an embodiment of the second invention, in which a deoxidizing aluminum ingot A to be charged into the aluminum melting furnace 19 is exposed to high-temperature gas led from the furnace 10. Therefore, it has a structure in which it is directly heated to melt it. That is, the molten metal pool 2 at the bottom of the melting furnace 19
A high-temperature gas supply port 21 is provided in the furnace wall slightly above 0, and the high-temperature gas supply port 21 is connected to the air supply duct 12, and a gas discharge port 22 is provided in the upper part of the other wall of the melting furnace 19. In addition, a hot water spout 23 is provided on the bottom wall of the melting furnace 19, and the hot water spout 23
is connected to the molten aluminum transfer conduit 6 via a stopper 24 that can be opened and closed. A large amount of high-temperature gas generated from the furnace 10 is
The high-temperature gas is fed into the hot gas supply port 21 of the melting furnace 19 through the heat collection hood 11 and the air duct 12, passes through the furnace interior chamber 25, and is discharged to the outside from the gas discharge port 22, so that the inside of the melting furnace 19 is hearth bottom sump 2
The deoxidizing aluminum ingot A to be charged into the furnace is directly heated and melted while passing through the furnace chamber 25 by the high-temperature gas.
尚、溶解された溶融アルミニウムＢを冶金反応
容器１に送り込んで鋼中酸素を脱酸するための構
造は、第１図の実施例と同様である。 The structure for feeding the molten aluminum B into the metallurgical reaction vessel 1 to deoxidize the oxygen in the steel is the same as that of the embodiment shown in FIG.
〔実施例 ４〕
第４図の実施例は前記第３図の変形例であつ
て、前記炉１０から集熱フード１１及び送気ダク
ト１２を介して送られて来た高熱ガスをアルミニ
ウム溶解炉２６の上端開口部から直接炉内に吐出
して、該溶解炉２６の内部に装入せる脱酸用アル
ミニウム塊Ａを溶解する構造である。尚、２７は
前記溶解炉２６の周囲を包囲する状態に設けたガ
ス漏洩防止用防壁体であつて、該防壁体２７に
は、前記溶解炉２６の内部に吐出された高熱ガス
を加熱後排出するためのガス排出口２８が設けら
れている。[Embodiment 4] The embodiment shown in FIG. 4 is a modification of the one shown in FIG. The deoxidizing aluminum ingot A to be charged into the melting furnace 26 is melted by discharging it directly into the furnace from the upper end opening of the melting furnace 26. Furthermore, reference numeral 27 denotes a gas leakage prevention barrier provided surrounding the melting furnace 26, and the barrier 27 is provided with a wall for discharging the high-temperature gas discharged into the melting furnace 26 after heating. A gas outlet 28 is provided for this purpose.
〔実施例 ５〕
第５図の実施例は、アルミニウム溶解炉１３に
収容された溶融アルミニウムＢ中に耐熱性浸漬ポ
ンプＰを深く浸漬し、該ポンプＰに接続された溶
融アルミニウム移送用導管６の他端部６ｂを冶金
反応容器１内の溶鋼Ｃ中に深く没入した構造であ
つて、前記耐熱性浸漬ポンプＰによつて吸引され
た溶融アルミニウムＢを冶金反応容器１内の溶鋼
Ｃ中に強制的に送り込んで鋼中酸素を脱酸するも
のである。本実施例におけるその他の構造は、第
１図の実施例と同様である。[Embodiment 5] In the embodiment shown in FIG. 5, a heat-resistant immersion pump P is deeply immersed in molten aluminum B housed in an aluminum melting furnace 13, and a molten aluminum transfer conduit 6 connected to the pump P is The other end 6b is deeply immersed in the molten steel C in the metallurgical reaction vessel 1, and the molten aluminum B sucked by the heat-resistant immersion pump P is forced into the molten steel C in the metallurgical reaction vessel 1. This is to deoxidize the oxygen in the steel. The other structures in this embodiment are the same as those in the embodiment shown in FIG.
尚、アルミニウム溶解炉の内部に溶融アルミニ
ウムＢを治金反応容器１内の溶鋼Ｃ中に深く送り
込む手段として、第１図乃至第４図の如く溶融ア
ルミニウム移送用導管６に不活性ガス供給用分岐
管９を接続して、該分岐管９より供給される不活
性圧力ガスによつて溶融アルミニウムＢを圧力助
送する構造と、第５図の如く耐熱性浸漬ポンプＰ
によつて溶融アルミニウムＢを吸引移送する構造
と、アルゴンガス又は窒素ガスなどの不活性ガス
をアルミニウム溶解炉の内部に供給し炉内圧力を
高めて溶融アルミニウム導管を通じて溶融アルミ
ニウムを圧送する構造とがあるが、各実施例に於
いて上記の溶融アルミニウムＢ移送手段を相互に
置換変更することは任意に可能である。 In addition, as a means to feed the molten aluminum B deeply into the molten steel C in the metallurgical reaction vessel 1 inside the aluminum melting furnace, an inert gas supply branch is connected to the molten aluminum transfer conduit 6 as shown in FIGS. 1 to 4. A structure in which a pipe 9 is connected and molten aluminum B is pressure-assisted by an inert pressure gas supplied from the branch pipe 9, and a heat-resistant immersion pump P as shown in FIG.
There is a structure in which molten aluminum B is sucked and transferred by a molten aluminum pipe, and a structure in which an inert gas such as argon gas or nitrogen gas is supplied into the interior of an aluminum melting furnace to increase the pressure inside the furnace and molten aluminum is pumped through a molten aluminum conduit. However, it is possible to arbitrarily replace the above-mentioned molten aluminum B transfer means in each embodiment.
また、前記溶融アルミニウム移送用導管６の外
周部に設けた加熱ヒーター８は、前記導管６の内
部を通過する溶融アルミニウムＢの溶融状態を保
つ上で有効であるが、アルミニウム溶解炉から冶
金反応容器１へ移送する手段に於いて溶融アルミ
ニウムＢが凝固する虞れのない場合は、前記加熱
ヒーター８を設けることは必ずしも要しない。従
つて、この加熱ヒーター８の存否は、上記各実施
例に於いて相互の置換変更が任意に可能であり、
第１図乃至第４図の実施例に於いて加熱ヒーター
８を設けない構造、或いは第５図の実施例に於い
て加熱ヒーター８を設けた構造であつても、それ
ぞれ実施可能である。 Further, the heater 8 provided on the outer circumference of the molten aluminum transfer conduit 6 is effective in keeping the molten aluminum B passing through the conduit 6 in a molten state. If there is no risk that the molten aluminum B will solidify in the means for transferring the aluminum to the molten aluminum B, it is not necessarily necessary to provide the heating heater 8. Therefore, the presence or absence of this heating heater 8 can be arbitrarily replaced or changed in each of the above embodiments.
It is also possible to implement a structure in which the heating heater 8 is not provided in the embodiment shown in FIGS. 1 to 4, or a structure in which the heating heater 8 is provided in the embodiment shown in FIG.
以上のように、本第１発明は、炉から発生せる
多量の高熱ガスをアルミニウム溶解炉の炉壁に導
いてこの炉壁を加熱するように設け、前記アルミ
ニウム溶解炉に接続した溶融アルミニウム移送用
導管の他端部を冶金反応容器内に収容せる溶鋼中
に深く没入させた構成である。これにより、アル
ミニウムの溶融点が比較的低いことに基因して、
アルミニウム溶融炉に独立の加熱手段を必要とせ
ず、排熱利用によつて顕著な省エネルギー効果が
得られるという効果を奏する。
As described above, the first invention provides a molten aluminum transfer device connected to the aluminum melting furnace, which is provided so as to guide a large amount of high-temperature gas generated from the furnace to the furnace wall of the aluminum melting furnace and heat the furnace wall. The other end of the conduit is deeply immersed in molten steel contained in a metallurgical reaction vessel. Due to the relatively low melting point of aluminum,
There is no need for an independent heating means in the aluminum melting furnace, and a remarkable energy saving effect can be obtained by utilizing waste heat.
また、本第２発明は、炉から発生せる多量の高
熱ガスをアルミニウム溶解炉の内部に導いて炉内
を直接加熱するように設け、前記アルミニウム溶
解炉に接続した溶融アルミニウム移送用導管の他
端部を冶金反応容器内に収容せる溶鋼中に深く没
入させた構成である。これにより、上記本第１発
明の効果に加え、アルミニウム塊の直接加熱によ
つて溶解時間を大幅に短縮するという効果を併せ
て奏することが可能となる。 Moreover, the second invention is provided so that a large amount of high-temperature gas generated from the furnace is guided into the interior of the aluminum melting furnace to directly heat the inside of the furnace, and the other end of the molten aluminum transfer conduit connected to the aluminum melting furnace is provided. The structure is such that the parts are deeply immersed in molten steel contained in a metallurgical reaction vessel. As a result, in addition to the effects of the first invention described above, it is possible to achieve the effect of significantly shortening the melting time by directly heating the aluminum ingot.
第１図乃至第５図はそれぞれ本発明の実施例を
示す概略説明図である。
１は冶金反応容器、１３，１９，２６，２９は
アルミニウム溶解炉、６は溶融アルミニウム移送
用導管、７はストツパー棒、８は加熱ヒーター、
９は不活性ガス供給用分岐管、１０は炉、１１は
集熱フード、１２は送気ダクト、２４はストツパ
ー、Ａはアルミニウム塊、Ｂは溶融アルミニウ
ム、Ｃは溶鋼、Ｆはフアンである。
1 to 5 are schematic explanatory diagrams showing embodiments of the present invention, respectively. 1 is a metallurgical reaction vessel, 13, 19, 26, 29 is an aluminum melting furnace, 6 is a conduit for transferring molten aluminum, 7 is a stopper rod, 8 is a heating heater,
9 is a branch pipe for supplying inert gas, 10 is a furnace, 11 is a heat collection hood, 12 is an air supply duct, 24 is a stopper, A is an aluminum lump, B is molten aluminum, C is molten steel, and F is a fan.
Claims (1)
ム溶解炉の炉壁に導いてこの炉壁を加熱するよう
に設け、前記アルミニウム溶解炉に接続した溶融
アルミニウム移送用導管の他端部を冶金反応容器
内に収容せる溶鋼中に深く没入させたことを特徴
とする鋼浴中脱酸処理装置。 ２ 前記アルミニウム溶解炉を、高熱ガス供給口
及びガス排出口を有する外炉壁と、脱酸用アルミ
ニウム塊を収容する内炉壁とからなし、前記外炉
壁と内炉壁の間に高熱ガスを通過し得る内炉壁加
熱用高熱室が形成されている特許請求の範囲第１
項記載の鋼浴中脱酸処理装置。 ３ 前記アルミニウム溶解炉の炉壁部に高熱ガス
通過用通孔が設けられている特許請求の範囲第１
項記載の鋼浴中脱酸処理装置。 ４ 炉から発生せる多量の高熱ガスをアルミニウ
ム溶解炉の内部に導いて炉内を直接加熱するよう
に設け、前記アルミニウム溶解炉に接続した溶融
アルミニウム移送用導管の他端部を冶金反応容器
内に収容せる溶鋼中に深く没入させたことを特徴
とする鋼浴中脱酸処理装置。 ５ 前記アルミニウム溶解炉の炉内底部の湯溜り
部より上方の炉壁部に高熱ガス供給口及びガス排
出口が設けられている特許請求の範囲第４項記載
の鋼浴中脱酸処理装置。[Claims] 1. The other end of a conduit for transferring molten aluminum connected to the aluminum melting furnace, which is provided so as to guide a large amount of high-temperature gas generated from the furnace to the furnace wall of the aluminum melting furnace and heat the furnace wall. 1. A deoxidizing treatment device in a steel bath, characterized in that a portion of the steel is deeply immersed in molten steel contained in a metallurgical reaction vessel. 2. The aluminum melting furnace includes an outer furnace wall having a high-temperature gas supply port and a gas discharge port, and an inner furnace wall that accommodates a deoxidizing aluminum ingot, and the high-temperature gas is disposed between the outer furnace wall and the inner furnace wall. Claim 1 is formed with a high heat chamber for heating the inner furnace wall through which the heat can pass through.
The steel bath deoxidation treatment apparatus described in 2. 3. Claim 1, wherein the furnace wall of the aluminum melting furnace is provided with a through hole for passing high-temperature gas.
The steel bath deoxidation treatment apparatus described in 2. 4 A large amount of high-temperature gas generated from the furnace is introduced into the aluminum melting furnace to directly heat the inside of the furnace, and the other end of the molten aluminum transfer conduit connected to the aluminum melting furnace is placed inside the metallurgical reaction vessel. A deoxidizing treatment device in a steel bath, characterized in that the molten steel is deeply immersed in the molten steel. 5. The steel bath deoxidation treatment apparatus according to claim 4, wherein a high-temperature gas supply port and a gas discharge port are provided in the furnace wall portion above the sump portion at the bottom of the furnace interior of the aluminum melting furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15419682A JPS5943813A (en) | 1982-09-04 | 1982-09-04 | Device for deoxidizing in steel bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15419682A JPS5943813A (en) | 1982-09-04 | 1982-09-04 | Device for deoxidizing in steel bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5943813A JPS5943813A (en) | 1984-03-12 |
| JPS6233285B2 true JPS6233285B2 (en) | 1987-07-20 |
Family
ID=15578932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15419682A Granted JPS5943813A (en) | 1982-09-04 | 1982-09-04 | Device for deoxidizing in steel bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943813A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62238322A (en) * | 1986-04-09 | 1987-10-19 | Sumitomo Metal Ind Ltd | Deoxidizer for steel manufacture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725608A (en) * | 1980-07-21 | 1982-02-10 | Showa Electric Wire & Cable Co | Method of producing foil conductor tape wire |
| JPS5773115A (en) * | 1980-10-27 | 1982-05-07 | Kawasaki Steel Corp | Adding device for molten additive into molten steel |
-
1982
- 1982-09-04 JP JP15419682A patent/JPS5943813A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725608A (en) * | 1980-07-21 | 1982-02-10 | Showa Electric Wire & Cable Co | Method of producing foil conductor tape wire |
| JPS5773115A (en) * | 1980-10-27 | 1982-05-07 | Kawasaki Steel Corp | Adding device for molten additive into molten steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5943813A (en) | 1984-03-12 |
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