JPH01180913A - Converter equipment - Google Patents
Converter equipmentInfo
- Publication number
- JPH01180913A JPH01180913A JP63003132A JP313288A JPH01180913A JP H01180913 A JPH01180913 A JP H01180913A JP 63003132 A JP63003132 A JP 63003132A JP 313288 A JP313288 A JP 313288A JP H01180913 A JPH01180913 A JP H01180913A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- melting
- refining
- furnace
- blowing
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 162
- 238000002844 melting Methods 0.000 claims abstract description 96
- 230000008018 melting Effects 0.000 claims abstract description 96
- 229910052742 iron Inorganic materials 0.000 claims abstract description 81
- 238000007670 refining Methods 0.000 claims abstract description 81
- 238000007664 blowing Methods 0.000 claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 66
- 239000001301 oxygen Substances 0.000 claims description 66
- 229910052760 oxygen Inorganic materials 0.000 claims description 66
- 239000007789 gas Substances 0.000 claims description 40
- 229910052799 carbon Inorganic materials 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 22
- 239000003575 carbonaceous material Substances 0.000 claims description 18
- 230000001590 oxidative effect Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 claims 1
- 238000009628 steelmaking Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000011449 brick Substances 0.000 description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 18
- 229910002092 carbon dioxide Inorganic materials 0.000 description 11
- 241000218691 Cupressaceae Species 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000002912 waste gas Substances 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、冷銑、スクラップ等の固体の含鉄除材を多量
に用いて転炉で酸素吹錬する転炉設備に関するしのであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to converter equipment for oxygen blowing in a converter using a large amount of solid iron-containing removed material such as cold pig iron or scrap.
〈従来の技術）
一般に転炉工場では同一能力（ｔ／ｃｈ）の転炉を３基
設備して、２基を常時稼働させるいわゆる２／３基操業
をおこない、操業中の転炉における精錬は、高炉から供
給される溶銑を主原料とし、これに相対的には少量のス
クラップを加え、さらに造滓剤と高流量の酸素を供給し
て酸素吹錬を行うのが普通である。<Conventional technology> Generally, a converter factory is equipped with three converters of the same capacity (t/ch) and performs a so-called 2/3 unit operation in which two converters are operated at all times. The main raw material is hot metal supplied from a blast furnace, a relatively small amount of scrap is added to it, and a slag-forming agent and a high flow rate of oxygen are further supplied to carry out oxygen blowing.
この場合、熱源による制約から全装入原料に占めるスク
ラップの量は最大３５％であって、スクラップが多量に
使用できる方法とはいえない。In this case, the amount of scrap that accounts for a maximum of 35% of the total raw materials charged is limited by the heat source, and it cannot be said that this is a method that can use a large amount of scrap.
この点について、大半かスクラップや冷銑である多量の
含鉄除材を使用して転炉の精錬を行う製鋼方法として、
特開昭６０−１７４８１２号か提案されている。Regarding this point, as a steelmaking method that uses a large amount of iron-containing removed material, most of which is scrap or cold pig iron, refining in a converter is
JP-A-60-174812 has been proposed.
この方法は、少なくとも２基よりなる機能の異なる２種
の転炉を用い、種湯の存在する一方の転炉（溶解専用転
炉）に含鉄除材、炭材、酸素を供給して高炭素溶融鉄を
得、この溶融鉄を別の転炉（精錬専用転炉）で酸素吹錬
することにより、所要成分の溶鋼を得ることを特徴とす
るものである。This method uses at least two types of converters with different functions, and supplies iron-containing removal material, carbonaceous material, and oxygen to one converter (converter exclusively for melting) where the seed metal is present to achieve a high carbon content. It is characterized by obtaining molten iron and oxygen blowing this molten iron in a separate converter (a converter exclusively for refining) to obtain molten steel with the required components.
（発明が解決しようとする課題）
上記方法は、基本的に１基の溶解専用転炉と１基の精錬
専用転炉を設備すれば実施可能であるが、１基の溶解専
用転炉と１基の精錬専用転炉を設備して実施すると、溶
解専用転炉または精錬専用転炉の炉修時には溶鋼を得る
ことかできす、このような炉修時にも含鉄除材を多量に
用いて溶鋼を得るためには、２基の溶解専用転炉と２基
の精線環＝ ３ −
用転炉を設備し、溶解専用転炉を１７２基操業しつつ８
１錬専用転炉を１７２基操業するか、或いは３基の溶解
専用転炉と３基のｆ（ｌ線環用転炉を設備し、溶解専用
転炉を２７３基操業しつつ精錬専用転炉を２／３基操業
しなければならす、転炉が４基或いは６基必要となり、
転炉設備費か高価となる。(Problems to be Solved by the Invention) The above method can basically be implemented by installing one converter exclusively for melting and one converter exclusively for refining, but it is possible to implement the above method by installing one converter exclusively for melting and one converter exclusively for refining. If a converter exclusively for refining is installed and carried out, molten steel can be obtained when repairing a converter exclusively for melting or a converter exclusively for refining. In order to obtain this, it is necessary to install two converters exclusively for melting and two converters for semi-wire ring = 3 -, and operate 172 converters exclusively for melting, while 8
Either operate 172 converters exclusively for 1 refining, or operate 273 converters exclusively for melting and 3 converters exclusively for melting and 3 converters for 2/3 of the converters must be operated, 4 or 6 converters are required,
Converter equipment costs are high.
本発明は、炉修時にも含鉄除材を多量に用いて溶鋼を得
ることができると共に、設備費が安価となる転炉設備を
提供するものである。The present invention provides converter equipment that can obtain molten steel by using a large amount of iron-containing removal material even during furnace repair, and that reduces equipment costs.
（課題を解決するための手段） 本発明の要旨は次の連っである。(Means for solving problems) The gist of the present invention is as follows.
（１）上吹酸素ランスを有すると共に炉底に複数の三重
管羽口を有し、種湯の存在する炉内に含鉄除材を供給し
、上記三重管羽口の内管より非酸化性ガスと共に炭材を
、中管より酸素を、外管より冷却用非酸化性ガスを吹き
込むと共に上吹酸素ランスより酸素を供給し含鉄除材を
溶解して高炭素溶融鉄を得る溶解専用転炉と、上吹酸素
ランスを有すると共に炉底に複数の高炭素溶融鉄撹拌ガ
ス吹き込み羽口を有し、高炭素溶融鉄に撹拌ガスを一
４ −
底吹きして撹拌しつつ１吹酸素ランスより酸素を供給し
て所要成分の溶鋼にする精錬専用転炉と、上吹酸素ラン
スを有すると共に炉底に上記三重管羽口及び上記撹拌ガ
ス吹き込み羽口を取替可能な溶解−精錬共用転炉とより
なり、上記溶解専用転炉の炉修時には上記共用転炉の炉
底に三重管を装着し１、種湯の存在する炉内に含鉄除材
を供給し、上記三重管羽口の内管より非酸化性ガスと共
に炭材を、中管より酸素を、外管より冷却用非酸化性ガ
スを吹き込むと共に上吹酸素ランスより酸素を供給して
含鉄除材を溶解し、高炭素溶融鉄を得る溶解炉として稼
働させ、一方上記精線環用転炉の炉修時には撹拌ガス吹
き込み羽口を装着し、高炭素溶融鉄に撹拌ガスを底吹き
して撹拌しつつ上吹酸素ランスより酸素を供給して所要
成分の溶鋼による精錬炉として稼働させることを特徴と
する転炉設備。(1) It has a top-blown oxygen lance and a plurality of triple-pipe tuyeres at the bottom of the furnace, and iron-containing removal material is supplied into the furnace where the seed water is present, and non-oxidizing material is supplied from the inner pipe of the triple-pipe tuyeres. A melting converter that melts iron-containing molten iron by blowing carbonaceous materials together with gas, oxygen from the middle tube, non-oxidizing gas for cooling from the outer tube, and supplying oxygen from the top-blown oxygen lance to melt iron-containing molten iron. It has a top-blown oxygen lance and multiple high-carbon molten iron stirring gas blowing tuyeres at the bottom of the furnace, which blows the stirring gas into the high-carbon molten iron at once.
4 - A converter dedicated to refining that supplies oxygen from a single blowing oxygen lance with bottom blowing and stirring to produce molten steel of the required composition, and has a top blowing oxygen lance, and the triple tube tuyeres and the stirring gas at the bottom of the furnace. It consists of a melting-refining common converter with replaceable blowing tuyeres, and when repairing the above-mentioned melting-only converter, a triple pipe is installed at the bottom of the above-mentioned common converter. Feed iron-containing removal material, blow in carbon material together with non-oxidizing gas from the inner tube of the triple-pipe tuyere, oxygen from the middle tube, non-oxidizing gas for cooling from the outer tube, and oxygen from the top-blown oxygen lance. The furnace is operated as a melting furnace to melt iron-containing molten iron and obtain high carbon molten iron.On the other hand, when repairing the above-mentioned converter for fine wire ring, a stirring gas injection tuyere is installed, and the stirring gas is injected into the high carbon molten iron. Converter equipment is characterized in that it is operated as a refining furnace with molten steel having the required components by bottom-blowing and stirring while supplying oxygen from a top-blowing oxygen lance.
（２）溶解専用転炉、溶解−精錬共用転炉、精錬専用転
炉の能力α、β、γ（ｔ／Ｃｈ）の関係か溶解専用転炉
及び溶解−精錬共用転炉の必要種湯量をδ（１）とする
と、α＝β＝γ＋δであることを特徴とする第（１）項
記載の転炉設備。(2) Relationship between the capacities α, β, and γ (t/Ch) of converters exclusively for melting, converters for melting and refining, and converters exclusively for refining. The converter equipment according to item (1), wherein δ(1) is α=β=γ+δ.
（３）溶解専用転炉、溶解−精錬共用転炉、精錬専用転
炉の能力α、β、γ（ｔ／ｃｈ）の関係が溶解専用転炉
の必要種湯量をδ（ｔ）とすると、α−β＋δ−γ＋δ
であることを特徴とする第（１）項記載の転Ｆ設備。(3) The relationship between the capacities α, β, and γ (t/ch) of the melting-only converter, the melting-refining converter, and the refining-only converter is as follows: α−β+δ−γ+δ
The F converter equipment according to item (1), characterized in that:
（４）攪拌ガス吹き込み羽口が二重管羽口であることを
特徴とする第（１）項〜第（３）項記載の転炉設備。(4) The converter equipment according to items (1) to (3), wherein the stirring gas blowing tuyere is a double pipe tuyere.
（５）撹拌ガス吹き込み羽口が羽口耐火物ブロック中に
複数の細管を有し、この細管が風箱に接合されてなる貫
通パイプ羽口であることを特徴とする第（１）項〜第（
３）項記載の転炉設備である。(5) Items (1) to (1) above, characterized in that the stirring gas blowing tuyere is a through-pipe tuyere having a plurality of thin tubes in a tuyere refractory block, and the thin tubes are joined to a wind box. No. (
This is the converter equipment described in section 3).
本発明によれは、溶解専用転炉、精錬専用転炉、溶解−
精錬共用転炉の３基の転炉を設備するものであるから、
溶解専用転炉、精錬専用転炉を各々２基設備する転炉設
備に比較して設備費が安価となる。また溶解専用転炉、
精錬専用転炉に加えて溶解−精錬共用転炉を設備してい
るので、溶解専用転炉、精錬専用転炉の稼働時に溶解−
精錬共用転炉の炉修を実施し、溶解専用転炉の炉修期間
は溶解−精錬共用転炉を溶解炉として稼働させ、精錬専
用転炉の炉修期間は溶解−精錬共用転炉を精錬炉として
稼働させる２／３操業を行うことかできるから、各転炉
の炉修時にも含鉄除材を多量に用いて溶鋼を製造するこ
とかできるものである。According to the present invention, a converter exclusively for melting, a converter exclusively for refining, a melting-
Since it will be equipped with three converters for common use in refining,
The equipment cost is lower than a converter facility that has two melting-only converters and two refining-only converters. In addition, a converter exclusively for melting,
In addition to the smelting converter, we have a melting and refining converter, so when the melting and refining converters are in operation, the melting and refining converters are
The common converter for smelting will be repaired, and the converter for melting and refining will be operated as a melting furnace during the repair period for the converter exclusively for melting, and the converter for melting and refining will be operated as a melting furnace during the repair period for the converter exclusively for smelting. Since it is possible to perform 2/3 operation when operating as a furnace, it is possible to use a large amount of iron-containing removed material to produce molten steel when repairing each converter.
（作 用） 以下作用とともに、本発明について詳細に説明する。(for production) The present invention will be explained in detail below along with its effects.
含鉄除材の溶解は、炭材の供給を炉底の羽口より吹き込
みできるようにした酸素上吹転炉、酸素底吹転炉、酸素
上底吹転炉を用いて実施できるか、本発明は炉底に三重
等羽口を設け、種湯の存在する炉内に含鉄除材を供給し
、上記三重等羽口の内管より非酸化性ガスと共に炭材を
、中管より酸素を、外管より冷却用非酸化性ガスを吹き
込むことかできるようにし、炭材を効率的に溶湯に熱と
して与えることかできるようにすると共に上吹酸素ラン
スを設け、転炉廃ガス中に酸素を吹き込んで自由噴流を
形成し、そａ中で酸素か高温の一酸化炭素を含有するガ
スと激しく混合され反応して燃焼している噴流をバーナ
ー焔のように浴面に衝突せしめて浴に熱を与えることが
できるように、炉底に三重等羽口を設けた酸素上底吹転
炉を用いて行うものである。The present invention investigates whether melting of iron-containing material can be carried out using an oxygen top-blowing converter, an oxygen-bottom blowing converter, or an oxygen-top-bottom blowing converter in which carbonaceous material can be supplied through the tuyeres at the bottom of the furnace. A triple tuyere is installed at the bottom of the furnace, and iron-containing removal material is supplied into the furnace where the seed water is present, and carbonaceous material is supplied together with non-oxidizing gas from the inner tube of the triple tuyere, and oxygen is supplied from the middle tube. By making it possible to blow in non-oxidizing gas for cooling from the outer pipe, the carbonaceous material can be efficiently given as heat to the molten metal, and a top-blowing oxygen lance is installed to inject oxygen into the converter waste gas. The jet is blown into the bath to form a free jet, in which it is violently mixed with gas containing oxygen or high-temperature carbon monoxide, and the burning jet hits the bath surface like a burner flame to generate heat in the bath. The process is carried out using an oxygen top-bottom blowing converter furnace equipped with triple tuyeres at the bottom of the furnace to give the same amount of heat.
また含鉄除材を溶解して得た高炭素溶融鉄の精錬は、酸
素上吹転炉、酸素底吹転炉、酸素上底吹転炉、酸素上吹
−二酸化炭素底吹転炉を用いて実施できるが、本発明は
炉内高炭素溶融鉄が底吹きガスによって撹拌され、上吹
酸素による脱炭反応か効率的に実施できる酸素上底吹転
炉又は酸素上吹−二酸化炭素底吹転炉を用いて実施する
ものである。In addition, high-carbon molten iron obtained by melting iron-containing material is refined using an oxygen top-blowing converter, an oxygen bottom-blowing converter, an oxygen top-blowing converter, or an oxygen top-blowing/carbon dioxide bottom-blowing converter. However, the present invention is an oxygen top-bottom blowing converter or an oxygen top-blowing-carbon dioxide bottom-blowing converter, in which high-carbon molten iron in the furnace is stirred by bottom-blowing gas and the decarburization reaction can be carried out efficiently using top-blowing oxygen. It is carried out using a furnace.
高炭素溶融鉄の底吹撹拌ガスとして酸素を使用する際に
は、内管を酸素が、外管を羽口冷却ガス、例えばＬＰＧ
が流れる二重管羽口を使用することになり、二酸化炭素
を使用する際には、羽口耐火物ｉ′ロック中に複数の細
管を有し、この細管が風箱に接合されてなる羽口（以下
、貫通パイプ羽口という）を使用することになり、処理
コスト的には二重管羽口を保護するための冷却ガス、例
えばＬＰＧか不要な貫通パイプ羽口を炉底に設けた酸素
上吹−二酸化炭素底吹転炉を採用して行うのが望ましい
。When oxygen is used as the bottom-blown stirring gas for high carbon molten iron, the inner tube is filled with oxygen and the outer tube is filled with tuyere cooling gas, such as LPG.
When using carbon dioxide, the tuyere refractory i'lock has multiple capillary tubes, and these capillary tubes are connected to the wind box. (hereinafter referred to as through-pipe tuyere), and in terms of processing cost, it is necessary to use a cooling gas such as LPG to protect the double-pipe tuyere or install an unnecessary through-pipe tuyere at the bottom of the furnace. It is preferable to use an oxygen top-blowing/carbon dioxide bottom-blowing converter.
更に溶解〜精錬共用転炉としては、炉底に三重等羽口を
設け、溶解炉として稼働させる際には上記三重等羽口の
内、中、外管より非酸化性ガスと共に炭材、酸素、ＬＰ
Ｇを供給し、精錬炉として稼働させる際には三重等羽口
の各管に供給するガス種類を変更して高炭素溶融鉄撹拌
ガス吹き込み羽口、詳しくは擬似二重管羽口として共用
使用する炉底三重管羽口共用、炉体共用型の溶解−精錬
共用転炉が考えられる。ところかこの場合上記三重管羽
口の内管を通過する炭材と非酸化性ガスを酸素に変更す
ると、外管にＬＰＧか流れていても内管は早期に溶損し
操業不可能となり、これを防止するために中管を通過す
る酸素をＬＰＧに変更すると処理コストか高価となる間
Ｕかあり、内管、中管、外管に流れるガスを全て二酸化
炭素に変更すると、高炭素溶融鉄の差し込みを防止する
ためには必要以上の多量の二酸化炭素を供給しなけれは
ならず、処理コス１〜が高価となるという問題がある。Furthermore, as a common converter for melting and refining, triple tuyeres are installed at the bottom of the furnace, and when operating as a melting furnace, non-oxidizing gas, carbonaceous material, and oxygen are passed through the inner, middle, and outer tubes of the triple tuyeres. ,LP
When operating as a refining furnace, the type of gas supplied to each pipe of the triple tuyere is changed to inject high carbon molten iron stirring gas into the tuyere, which is commonly used as a pseudo double-pipe tuyere. A common converter for melting and refining with a common triple-tube tuyere bottom and a common furnace body is considered. However, in this case, if the carbonaceous material and non-oxidizing gas passing through the inner pipe of the triple-pipe tuyere were changed to oxygen, even if LPG was flowing through the outer pipe, the inner pipe would quickly melt and become impossible to operate. If the oxygen passing through the inner tube is changed to LPG in order to prevent this, the processing cost will be increased, and if all the gases flowing through the inner tube, middle tube, and outer tube are changed to carbon dioxide, high carbon molten iron will be produced. In order to prevent the insertion of carbon dioxide, it is necessary to supply a larger amount of carbon dioxide than necessary, which poses a problem in that the processing cost becomes expensive.
そこで本発明は、上吹酸素ランスを有すると共に炉底に
上記三重管開口及び上記撹拌ガス吹き込み羽口（二重等
羽口又は貫通パイプ羽口）を取替可能な溶解−精錬共用
転炉、即ち炉底羽口取替、炉体共用型の溶解−精錬共用
転炉を設備して、上記炉底三重管羽口共用、炉体共用型
の溶解−精錬共用転炉における処理コスト問題を解決す
るしのである５更に精錬炉として稼働させる際に処理コ
スト上有利な貫通パイプ羽口の使用を可能にし、処理コ
ストを低下することができるようにしたものである。Therefore, the present invention provides a melting-refining common converter which has a top-blown oxygen lance and is capable of replacing the triple pipe opening at the bottom of the furnace and the stirring gas blowing tuyeres (double equal tuyere or through-pipe tuyere). In other words, by replacing the hearth tuyere and installing a common melting-refining converter with a shared furnace body, the processing cost problem in the above-mentioned melting-refining converter with a shared hearth triple tube tuyere and furnace body type can be solved. Furthermore, when operating as a refining furnace, it is possible to use through-pipe tuyere, which is advantageous in terms of processing costs, thereby reducing processing costs.
溶解専用転炉、溶解〜精錬共用転炉、精錬専用転炉の能
力をそれぞれα、β、γ（ｔ／Ｃｈ）とし、溶解専用転
炉及び溶解−精錬共用転炉の必要種湯量をδとすると、
α−β＝７−＋δの関係を満足させることにより、３基
の転炉でもって能力αの溶解専用転炉と能力γ＝α−δ
の８＃錬専用転炉とを各々２基設備し、溶解専用転炉を
１７２基操業としつつ、ｍｓ専用転炉を１７２基操業す
る転炉工場と同等の生産量を確保できる。The capacities of the converter exclusively for melting, the converter for melting and refining, and the converter exclusively for refining are respectively α, β, and γ (t/Ch), and the amount of seed metal required for the converter exclusively for melting and the converter for melting and refining is δ. Then,
By satisfying the relationship α-β=7-+δ, three converters can be used to create a converter exclusively for melting with a capacity α and a converter with a capacity γ=α-δ.
By installing two 8# converters for melting and operating 172 converters for melting, it is possible to secure the same production volume as a converter factory that operates 172 converters for MS.
また同一能力γｆｔ／ｃｈ）の転炉を３基設備してなる
転炉工場を改造して本発明転炉設備を横築する場合、上
記溶解専用転炉、溶解−精錬共用転炉、精錬専用転炉の
能力α、β、γ（ｔ／ｃｈ）は、溶解専用転炉の必要種
湯量をδとすると、α＝β＋δ−γ±δの関係を満足さ
せることにより、１つの既存転炉炉体を拡大新設するだ
けで２つ既存転炉炉体を流用することかでき、改造設（
２）投資を低減できる。In addition, when converting a converter factory equipped with three converters with the same capacity γft/ch) and building the converter equipment of the present invention horizontally, the above-mentioned melting-only converter, melting-refining common converter, and refining-only converter Converter capacity α, β, γ (t/ch) can be determined by satisfying the relationship α=β+δ−γ±δ, where δ is the amount of seed metal required for a melting-only converter. It is possible to reuse two existing converter furnace bodies by simply expanding and installing a new converter body, and it is possible to reuse two existing converter furnace bodies (
2) Investment can be reduced.
（実施例） 次に本発明の一実施例を図面により詳細に説明する。(Example) Next, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本発明の転炉設備を示した説明図、第２〜４図
は、それぞれの羽口および盲煉瓦の装着を示す説明図で
ある５Ａは酸素上吹きランス１を有し、炉底に複数本例
えば８本の第２図に示す三本管羽口２を有し、その内管
３より石炭、コークス等の炭材をＮ２ガスと共に吹き込
み、中管４より酸素（０２）を、外管５よりＬＰＧを吹
き込むことかてきるように構成された能力２００（ｔ／
ｃｈ）の酸素上底吹溶解専用転炉である。各羽口２の容
管３．４．５の気体供給管６．７．８へのＮ２゜０、Ｌ
ＰＧの供給は、Ｎ 、０２．ＬＰＧ源９゜１０．１１
よりトラニオン軸１２を介して炉底に延びるＮ 、０
２．ＬＰＧ供給配管１３．１４゜１５この配管１３，１
４．１５と上記供給管６゜！
７．８とを接続するホース１６．１６．１６を介して行
うことかでき、炭材の供給は炭材タンク１７よりＮ２洪
給配管１３に供給して行うことができるようになってい
る。Fig. 1 is an explanatory diagram showing the converter equipment of the present invention, and Figs. 2 to 4 are explanatory diagrams showing installation of respective tuyeres and blind bricks. 5A has an oxygen top blowing lance 1; The bottom has a plurality of three-tube tuyeres 2, for example eight, as shown in FIG. , the capacity 200 (t/
ch) is a converter exclusively for oxygen top-bottom blowing melting. N2°0, L to the gas supply pipe 6.7.8 of the container pipe 3.4.5 of each tuyere 2
The supply of PG is N,02. LPG source 9°10.11
N, which extends to the bottom of the furnace via the trunnion shaft 12, 0
2. LPG supply piping 13.14゜15 This piping 13,1
4.15 and the above supply pipe 6°! 7.8 via hoses 16, 16, and 16, and the carbonaceous material can be supplied from the carbonaceous material tank 17 to the N2 flood supply pipe 13.
Ｂは酸素上吹きランス１８を有し、炉底に第３区に示す
羽ロ耐大物ブロック１９中に複数本の細管２０を有し、
この細管２０が風箱２１に接合されている貫通パイプ羽
口２２を２本設置した能力１２０（ｔ／ｃｈ）の酸素上
吹き、二酸化炭素（ＣＯ□）底吹精錬専用転炉である。B has an oxygen top blowing lance 18, and has a plurality of thin tubes 20 in a large block 19 showing the third section at the bottom of the furnace.
This is a converter exclusively for oxygen top-blowing and carbon dioxide (CO□) bottom-blowing refining with a capacity of 120 (t/ch), which is equipped with two through-pipe tuyeres 22 in which the thin tubes 20 are joined to a wind box 21.
各羽口２２の気体供給管一 １２ −
２３へのＣＯの供給は、Ｃ０２源２４よりトラニ第ン軸
２５を介して炉底に延びる００２供給配管２６、この配
管２６と上記供給管２３とを接続するホース２７を介し
て行うことかできるようになっている。The supply of CO to the gas supply pipes 12-23 of each tuyere 22 is carried out by connecting a 002 supply pipe 26 extending from the CO2 source 24 to the furnace bottom via the tranny shaft 25, and connecting this pipe 26 and the above-mentioned supply pipe 23. This can be done via a connecting hose 27.
Ｃは上吹酸素ランス２８を有し、炉底には８本の羽口取
付穴２９を設けてなり、上記羽口取付穴２９に第２図に
示す上記三重管開口２を装着し、トラニオン軸３０を介
して炉底に延びる上記Ｎ２供給配管１３． ｏ −
ｃｏ。共用供給配管３１、しＰＧ供給配管１５と各羽口
２の容管３．４，５の気体供給管６，７．８とをホース
で接続し、バルブ３２群を開閉操作することにより炭材
、０２を底吹きする溶解炉として稼働せしめることかで
きると共に、２つの上記羽口取付穴２９に上記貫通パイ
プ羽口２２を第３図の如く装着し、残り６つの羽口取付
穴２９に第４図に示す盲煉瓦３３を装着し、上記貫通パ
イプ羽口２２の気体供給管２３と ０２〜ＣＯ７共用供
給配管３１とをホースで接続し、バルブ３２群を開閉操
作することによりＣＯ２を底吹きする精錬炉として稼働
せしめることができるようにした能力１２０（ｔ／ｃｈ
）の溶解−精錬共用転炉である。C has a top-blown oxygen lance 28, and eight tuyere mounting holes 29 are provided in the bottom of the furnace.The triple pipe opening 2 shown in FIG. The N2 supply pipe 13 extends to the bottom of the furnace via the shaft 30. o −
co. By connecting the common supply pipe 31, the PG supply pipe 15, and the gas supply pipes 6, 7.8 of the container pipes 3.4, 5 of each tuyere 2 with hoses, and opening and closing the valve 32 group, carbonaceous material is . The blind brick 33 shown in Figure 4 is installed, the gas supply pipe 23 of the through-pipe tuyere 22 and the 02-CO7 common supply pipe 31 are connected with a hose, and CO2 is bottom blown by opening and closing the valve 32 group. Capacity 120 (t/ch) that can be operated as a smelting furnace
) is a common converter for melting and refining.
羽口取付穴２９への三重管理口２、貫通パイプ羽口２２
、盲煉瓦３３の脱着、装着は次のようにして行うもので
ある。Triple control port 2 to tuyere mounting hole 29, through pipe tuyere 22
The blind bricks 33 are attached and detached as follows.
三重管理口２の脱着は、第２図に示す気体供給管６，７
．８からホース１６，１６．１６を外す、ボルト３４の
ナツト３５を外す、ノズル交換機で羽口２及びフランジ
３６を一体で引き抜く、ボルト３７を外す、フランジ３
８を外す、コツター３９を外す、フランジ４０を外す、
煉瓦解体機でベース煉瓦４１、スリーブ煉瓦４２を解体
する。To attach and detach the triple control port 2, use the gas supply pipes 6 and 7 shown in Figure 2.
．． Remove the hose 16, 16.16 from 8, remove the nut 35 of the bolt 34, pull out the tuyere 2 and flange 36 together with a nozzle exchanger, remove the bolt 37, flange 3
Remove 8, remove the screwdriver 39, remove the flange 40,
The base brick 41 and sleeve brick 42 are dismantled using a brick dismantling machine.
なお図面に於いて、４３は炉体鉄皮、４４は羽口金物取
付座、４５は抱き煉瓦、４６は羽口煉瓦を示す。In the drawings, 43 is a furnace shell, 44 is a tuyere hardware mounting seat, 45 is a retaining brick, and 46 is a tuyere brick.
三重管理口２の装着は、先ず抱き煉瓦４５、羽口煉瓦４
６で形成された羽口取付穴２つにスリーブ煉瓦４２、ベ
ース煉瓦４１をセットする、フランジ４０をつりる、＝
１ンター３９をつける、フランジ３８をつりる、ホルト
３７を締めつける、ノズル交換機で羽口２及びフランジ
３６を一体で挿入する、ボルト３４のナンド３５を締め
つける、気体供給管６，７．８にホース１６．１６．１
６を取りつける。To install the Mie control port 2, first install the body bricks 45 and the tuyere bricks 4.
Set the sleeve brick 42 and base brick 41 into the two tuyere mounting holes formed in step 6, hang the flange 40, =
1 Attach the center 39, hang the flange 38, tighten the bolt 37, insert the tuyere 2 and flange 36 together using a nozzle exchanger, tighten the bolt 35 of the bolt 34, attach the hose to the gas supply pipes 6, 7.8. 16.16.1
Attach 6.
貫通パイプ羽口２２の脱着は、第３図に示すボルト３７
を外す、フランジ４７を外す、コツター３つを外す、フ
ランジ４０を外す、煉瓦解体機でベース煉瓦４１を解体
する、ノズル交換機で貫通パイプ羽口２２を引き抜く。The through-pipe tuyere 22 can be attached and detached using the bolt 37 shown in FIG.
, remove the flange 47, remove the three cotters, remove the flange 40, demolish the base brick 41 with a brick demolition machine, and pull out the through pipe tuyere 22 with a nozzle exchange machine.
貫通パイプ羽口２２の装着は、ノズル交換機で貫通パイ
プ羽口２２を挿入する、ベース煉瓦４１をセットする、
フランジ４０をつける、コツター３９をつける、フラン
ジ４７をつける、ホルト３７を締めつける。To install the through-pipe tuyere 22, insert the through-pipe tuyere 22 using a nozzle exchanger, set the base brick 41, and so on.
Attach the flange 40, attach the bolter 39, attach the flange 47, and tighten the bolt 37.
盲煉瓦３３の脱着は、第４図に示すボルト３７を外す、
フランジ４８を外す、コツター３９を外す、フランジ４
０を外す、煉瓦解体機で下前煉瓦４９、上官煉瓦５０を
解体する。To install and remove the blind brick 33, remove the bolt 37 shown in Figure 4.
Remove flange 48, remove connector 39, flange 4
Remove 0 and use the brick dismantling machine to demolish the lower front brick 49 and the upper rank brick 50.
＝ １５ −
盲煉瓦３３の装着は、上官煉瓦５０をセットする、下前
煉瓦４９をセットする、フランジ４０をつける、コツタ
ー３９をつける、フランジ４８をつ（）る、ボルト３７
を締めつける。= 15 - To install the blind brick 33, set the superior brick 50, set the lower front brick 49, attach the flange 40, attach the blocker 39, attach the flange 48, bolt 37
Tighten.
能力２００（ｔ／ｃｈ）の溶解専用転炉Ａは、炉修期間
を除いて例えば８０ｔの種湯の存在する炉内にスクラッ
プ、冷鉄等の含鉄桧材を１２０シ供給し、上記三重管理
口２の内管３よりＮ２と共に炭材を、中管４より０２を
、外管５よりＬＰＧを吹き込むと共に、上吹酸素ランス
１より０２を供給し、含鉄桧材を溶解して高炭素溶融鉄
を得る。ついで上記含鉄桧材を溶解して得た１２０℃の
高炭素溶融鉄を取鍋に出銑し、高炭素溶融鉄の残部８０
ｔを溶解専用転炉Ａに残し、含鉄桧材溶解のための種湯
として使用することを繰り返し実施する。Converter A exclusively for melting with a capacity of 200 (t/ch) supplies, for example, 120 tons of ferrous cypress materials such as scrap and cold iron into the furnace where 80 tons of seed metal exists, excluding the furnace repair period, and the above-mentioned triple management is carried out. Carbon material is blown together with N2 from the inner pipe 3 of the mouth 2, 02 is blown from the middle pipe 4, LPG is blown from the outer pipe 5, and 02 is supplied from the top-blowing oxygen lance 1 to melt the iron-containing cypress material and melt the high carbon material. Get iron. Next, the high carbon molten iron obtained by melting the above-mentioned iron-containing cypress material was tapped into a ladle at 120°C, and the remaining 80% of the high carbon molten iron was poured into a ladle.
t is left in the melting converter A and used as a seed hot water for melting iron-containing cypress material.
溶解炉として稼働時の能力１２０（ｔ／ｃｈ）の溶解−
精錬共用転炉Ｃは、例えば６０ｔの種湯の存在する炉内
にスクラップ、冷銑等の含鉄桧材を６０を供給し、上記
三重管理口２の内管３よりＮ２と共−ピー
一 １６ −
に炭材を、中管４より０２を、外管５よりＬ Ｐ Ｇを
吹き込むと共に、上吹酸素ランス２８より０２を供給し
、含鉄桧材を溶解して高炭素溶融鉄を得る。ついで６０
ｔの高炭素溶融鉄を取鍋に出銑し、高炭素溶融鉄の残部
６０ｔを共用転炉Ｃに残し、再度含鉄除材を６０を供給
し、上記三重管理口２の内管３よりＮ２と共に炭材を、
中管４より０２を、外管５よりＬＰＧを吹き込むと共に
上吹酸素ランス２８より０２を供給し、含鉄桧材を溶解
して高炭素溶融鉄を得る。ついで６０ｔの高炭素溶融鉄
を上記６０ｔの高炭素溶融鉄を貯留している取鍋に出銑
し、この取鍋内に１２０七の高炭素溶融鉄を確保すると
共に、高炭素溶融鉄の残部６０ｔを共用転炉Ｃに列し含
鉄桧材溶解のための種湯として使用することを繰り返し
実施する。Melting capacity of 120 (t/ch) when operating as a melting furnace
The refining common converter C supplies, for example, 60 tons of iron-containing cypress materials such as scrap and cold pig iron into the furnace where 60 tons of seed hot water exists, and is supplied with N2 from the inner pipe 3 of the triple control port 2. - Blow in carbonaceous material, 02 from the inner pipe 4, LPG from the outer pipe 5, and supply 02 from the top-blown oxygen lance 28 to melt the iron-containing cypress material to obtain high carbon molten iron. Then 60
t of high carbon molten iron is tapped into the ladle, the remaining 60 t of high carbon molten iron is left in the common converter C, 60 t of iron-containing removed material is supplied again, and N2 is poured from the inner pipe 3 of the triple control port 2. Along with carbonaceous materials,
02 is blown into the inner pipe 4 and LPG is blown into the outer pipe 5, and 02 is supplied from the top-blown oxygen lance 28 to melt the iron-containing cypress material and obtain high carbon molten iron. Next, 60 tons of high carbon molten iron is tapped into the ladle storing the above 60 tons of high carbon molten iron, and 120 tons of high carbon molten iron is secured in this ladle, and the remainder of the high carbon molten iron is tapped. 60 tons were placed in the common converter C and used repeatedly as a seed hot water for melting iron-containing cypress materials.
なお溶解−精錬共用転炉Ｃの能力を溶解専用転炉Ａと同
様な２００（ｔ／ｃｈ）とすれば、溶解炉として稼働時
の溶解−精錬共用類Ｃは、上記溶解専用転炉Ａと同様な
操業形態を実施することができる。If the capacity of the melting-refining converter C is 200 (t/ch), which is the same as that of the melting-only converter A, then the melting-refining common type C when operating as a melting furnace will be the same as the melting-only converter A. Similar operating configurations can be implemented.
また能力１２０ｆｔ／ｃｈ）の溶解−精錬共用転炉Ｃを
溶解炉として稼働させ、上記操業形態で得た１２０ｔの
高炭素溶融鉄を精錬専用炉Ｂへ所定温度を確保して供給
するなめには、初回及び又は次回に取鍋に出銑する（５
Ｑｔの高炭素溶融鉄の温度を、溶解専用転炉Ａから串銑
オる１２０ｔの高炭素溶融鉄の温度よりも高めておく必
要かあるか、溶解−精錬共用転炉Ｃの能力を溶解専用転
炉Ａと同様な２００ｆｔ／ｃｈ）とすればその必要がな
く、能力＋２０（ｔ／ｃｈ）の溶解−精錬共用転炉Ｃを
使用する場合に比較して燃料原単位を低下できる。In addition, in order to operate the melting-refining common converter C with a capacity of 120 ft/ch) as a melting furnace, and supplying 120 tons of high carbon molten iron obtained in the above operation mode to the refining dedicated furnace B while ensuring a predetermined temperature, , tap the ladle for the first time and/or the next time (5
Is it necessary to keep the temperature of the Qt high carbon molten iron higher than the temperature of the 120t high carbon molten iron that is skewered from the melting-only converter A? If the converter A is used (200 ft/ch), which is the same as the converter A, this is not necessary, and the fuel consumption rate can be lowered compared to the case of using the converter C for melting and refining, which has a capacity of +20 (t/ch).
能力１２０ｆｔ／ｃｈ）の精錬専用転炉Ａ、又は精錬炉
として稼働時の能力１２０（ｔ／ｃｈ）の溶解−精錬共
用転炉Ｃは、上記取鍋より移注した１２０ｔの含鉄除材
を溶解して得た高炭素溶融鉄を原料として、上記Ｃ０２
吹き込み貫通パイプ羽口２２より００２を供給すると共
に、上吹酸素ランス１８スは２８よりｏ２を供給して所
要成分の溶鋼を得る。The smelting-only converter A with a capacity of 120 ft/ch) or the melting-refining common converter C with a capacity of 120 t/ch when operating as a smelting furnace melts 120 tons of iron-containing material transferred from the ladle. Using the high carbon molten iron obtained as raw material, the above C02
002 is supplied from the blowing through pipe tuyere 22, and the top blowing oxygen lance 18 supplies O2 from 28 to obtain molten steel with the required composition.
上記転炉８価によれは、溶解専用転炉Ａ、精錬専用転炉
Ｂの他に溶解炉又は精錬炉に切り換え使用できる溶解−
精錬共用転炉Ｃを設備しているので、例えは第５図に示
す夕ｔ１ ＜ ２／３基操業を行い、詳しくは溶解専用
転炉Ａの炉１６時には共用転炉Ｃを溶解炉として稼働さ
せ、溶解−精錬共用転炉Ｃで含鉄除材を溶解して得た高
炭素溶融鉄を精錬専用転炉Ｂで所要成分の溶鋼にする操
業を行い、精錬専用転炉Ｂの炉修時には溶解−精錬共用
転炉Ｃを精錬炉として稼働させ、溶解専用転炉Ａで含鉄
除材を溶解して得た高炭素溶融鉄を共用転炉Ｃで所要成
分の溶鋼にする操業を行い、溶解−精錬共用転炉Ｃの炉
修時には、溶解専用転炉Ａで含鉄除材を溶解して得な高
炭素溶融鉄を精錬専用転炉Ｂで所要成分の溶鋼にする操
業を行い、各炉Ａ、Ｂ。Depending on the converter 8 value above, in addition to the melting-only converter A and the refining-only converter B, the melting furnace can be switched to a melting furnace or a refining furnace.
Since the common converter C for refining is installed, for example, in the evening t1 < 2/3 operation as shown in Fig. 5, the common converter C is operated as a melting furnace at 16 o'clock in the melting-only converter A. The high-carbon molten iron obtained by melting the iron-containing removed material in the common converter C for melting and refining is converted into molten steel of the required composition in the converter B exclusively for refining, and when the converter B exclusively for refining is repaired, it is melted. - The refining common converter C is operated as a refining furnace, and the high carbon molten iron obtained by melting iron-containing material in the melting-only converter A is converted into molten steel of the required composition in the common converter C, and melting is carried out. When refining common converter C is repaired, the melting-only converter A melts the iron-containing removed material and converts the high-carbon molten iron into molten steel with the required composition in refining-only converter B, and each furnace A, B.
Ｃの炉修時にも溶鋼を得ることができるものである。Molten steel can also be obtained when repairing the furnace C.
また第５図に示す如く、能力１２０ｆｔ／ｃｈ）の溶解
−精錬共用転炉Ｃの溶解炉としての稼働期間を能力２０
０（ｔ／ｃｈ）の溶解専用転炉Ａの炉修期間のみとする
ことにより、即ち溶解−精錬共用転炉Ｃの溶解炉として
の使用率を低下（第５図の操炉パタ−ンでは約１０％）
することにより、溶解−精煉共用転炉Ｃの能力を２００
ｆｔ／ｃｈ）としたときとほぼ同等の高炭素溶融鉄の生
産ｊｔ （ｔ／Ｈ）を確保できる。In addition, as shown in Figure 5, the operating period of the melting-refining common converter C with a capacity of 120 ft/ch) as a melting furnace is
0 (t/ch), only the melting-only converter A is repaired, thereby reducing the usage rate of the melting-refining converter C as a melting furnace (in the furnace operation pattern shown in Figure 5). approximately 10%)
By doing so, the capacity of the converter C for melting and refining will be increased to 200
The production jt (t/H) of high carbon molten iron can be secured which is almost the same as when the production jt (t/H) is set as (ft/ch).
なお溶解専用転炉Ａの炉修に際しては、８０しの種湯の
存在する溶解専用転炉Ａ内へ含鉄除材を例えは１００を
供給し、三重管開口２より炭材、酸素を吹き込むと共に
上吹きランス１より酸素を供給し、含鉄除材を溶解して
高炭素溶融鉄を得る。When repairing the converter A exclusively for melting, for example, 100 ml of iron-containing removal material is supplied into the converter A exclusively for melting in which 80 ml of seed water is present, and carbonaceous material and oxygen are blown through the triple pipe opening 2. Oxygen is supplied from the top blowing lance 1 to melt the iron-containing removed material and obtain high carbon molten iron.
ついてづ２０ｔの高炭素溶融鉄を取鍋に出銑し、これを
精錬専用転炉Ｂへ移注すると共に高炭素溶融鉄の残部６
０ｔを上記取鍋とは異なる取鍋に全量出銑する。これを
炉修を終えるか或いは待機している溶解−精錬共用転炉
Ｃの炉底の羽口取付穴２９に三重管開口２及び盲煉瓦３
３を装着すると共にユーティリティー配管を接続し、溶
解炉として稼働可能な状態にした溶解−精錬共用転炉Ｃ
に移注して、溶解炉として稼働させる溶解−精錬共用転
炉Ｃ内に６０ｔの種湯を存在させるものである。Next, 20 tons of high carbon molten iron is tapped into a ladle, transferred to converter B for refining, and the remaining 6 tons of high carbon molten iron is poured into a ladle.
The entire amount of 0t is tapped into a ladle different from the above ladle. The triple pipe opening 2 and the blind brick 3 are installed in the tuyere installation hole 29 at the bottom of the melting-refining common converter C which has completed its furnace repair or is on standby.
Converter C for melting and refining is equipped with 3 and connected to utility piping, making it operable as a melting furnace.
60 tons of seed metal is placed in the melting-refining common converter C, which is operated as a melting furnace.
また溶解専用転炉Ａの炉修完了時には、溶解炉として稼
働し６０ｔの種湯の存在する溶解−精錬共用転炉Ｃ内へ
、例えは２０ｔの含鉄除材を供給し、三重管開口２より
炭材、酸素を吹き込むと共に上吹きランス２８より酸素
を供給し、含鉄除材を溶解して８０ｔの高炭素溶融鉄を
得、これを全Ｊｉ取鍋に出銑して炉修の完了した溶解専
用転炉Ａへ移注し、溶解専用転炉Ａ内に８０ｔの種湯を
存在させるものである。When the melting-only converter A is repaired, for example, 20 tons of iron-containing removed material is supplied to the melting-refining common converter C, which operates as a melting furnace and has 60 tons of seed metal, through the triple pipe opening 2. Carbon material and oxygen are blown in, and oxygen is supplied from the top blowing lance 28, and the iron-containing removed material is melted to obtain 80 tons of high carbon molten iron, which is tapped into a full-JI ladle to complete the furnace repair. The melt is transferred to a converter A exclusively for melting, and 80 tons of seed hot water is present in the converter A exclusively for melting.
（発明の効果）
以上詳述したように、本発明の転炉設備よれば溶解専用
転炉又は精錬専用転炉又は溶解−精錬共用転炉の炉修時
にも含鉄除材を多量に用いて溶鋼を得ることができ、稼
動率向上と共に設備費のコスト低減を図り得る。(Effects of the Invention) As detailed above, according to the converter equipment of the present invention, a large amount of iron-containing removed material can be used to melt molten steel even when repairing a converter exclusively for melting, a converter exclusively for refining, or a converter for melting and refining. can be obtained, and it is possible to improve the operating rate and reduce equipment costs.
第１区は本発明の転炉設備の説明図、第２，３゜４図は
溶解−精錬共用転炉の炉底の羽口取付穴への三重管開口
、撹拌ガス吹込羽口、盲煉瓦のそれぞれの装着状態を説
明する測断面図、第５図は本発明の転炉設備の操炉パタ
ーンの説明図である。
Ａ・・溶解専用転炉、Ｂ・・精錬専用転炉、Ｃ・・・溶
解−精錬共用転炉、１，１８．２８・・・酸素上吹きラ
ンス、２・・三重等羽口、３・・内管、４・中管、５・
・外管、２０・・糾答、２１・・風箱、２２・・・貫通
パイプ羽口、２つ・・・羽口取付穴、３３・・・盲煉瓦
代理人 弁理士 秋 沢 政 光
ｆｌ！ｌ！ １名
Ａ′、２図
７ｔ’３図
〃Section 1 is an explanatory diagram of the converter equipment of the present invention, and Figures 2, 3 and 4 are the triple pipe opening to the tuyere installation hole in the bottom of the converter for melting and refining, the tuyeres for blowing stirring gas, and the blind bricks. FIG. 5 is an explanatory diagram of the operating pattern of the converter equipment of the present invention. A... Converter exclusively for melting, B... Converter exclusively for refining, C... Converter for melting and refining, 1, 18.28... Oxygen top blowing lance, 2... Triple tuyere, 3...・Inner tube, 4・Medium tube, 5・
・Outer pipe, 20..Review, 21..Wind box, 22..Through pipe tuyere, 2...tuyere mounting holes, 33..Blind brick agent, patent attorney Masamitsu Akizawa fl. ! l! 1 person A', 2 figures 7 t'3 figures
Claims (1)
羽口を有し、種湯の存在する炉内に含鉄冷材を供給し、
上記三重管羽口の内管より非酸化性ガスと共に炭材を、
中管より酸素を、外管より冷却用非酸化性ガスを吹き込
むと共に上吹酸素ランスより酸素を供給し含鉄冷材を溶
解して高炭素溶融鉄を得る溶解専用転炉と、上吹酸素ラ
ンスを有すると共に炉底に複数の高炭素溶融鉄撹拌ガス
吹き込み羽口を有し、高炭素溶融鉄に撹拌ガスを底吹き
して撹拌しつつ上吹酸素ランスより酸素を供給して所要
成分の溶鋼にする精錬専用転炉と、上吹酸素ランスを有
すると共に炉底に上記三重管羽口及び上記撹拌ガス吹き
込み羽口を取替え可能な溶解−精錬共用転炉とよりなり
、上記溶解専用転炉の炉修時には上記共用転炉の炉底に
三重管を装着し、種湯の存在する炉内に含鉄冷材を供給
し、上記三重管羽口の内管より非酸化性ガスと共に炭材
を、中管より酸素を、外管より冷却用非酸化性ガスを吹
き込むと共に上吹酸素ランスより酸素を供給して含鉄冷
材を溶解し、高炭素溶融鉄を得る溶解炉として稼働させ
、一方上記精錬専用転炉の炉修時には撹拌ガス吹き込み
羽口を装着し、高炭素溶融鉄に撹拌ガスを底吹きして撹
拌しつつ上吹酸素ランスより酸素を供給して所要成分の
溶鋼にする精錬炉として稼働させることを特徴とする転
炉設備。 ２、溶解専用転炉、溶解−精錬共用転炉、精錬専用転炉
の能力α，β，γ（ｔ／ｃｈ）の関係が溶解専用転炉及
び溶解−精錬共用転炉の必要種湯量をδ（ｔ）とすると
、α＝β＝γ＋δであることを特徴とする請求項１記載
の転炉設備。 ３、溶解専用転炉、溶解−精錬共用転炉、精錬専用転炉
の能力α，β，γ（ｔ／ｃｈ）の関係が溶解専用転炉の
必要種湯量をδ（ｔ）とすると、α＝β＋δ＝γ＋δで
あることを特徴とする請求項１記載の転炉設備。 ４、撹拌ガス吹き込み羽口が二重管羽口であることを特
徴とする請求項１〜３記載の転炉設備。 ５、撹拌ガス吹き込み羽口が羽口耐火物ブロック中に複
数の細管を有し、この細管が風箱に接合されてなる貫通
パイプ羽口であることを特徴とする請求項１〜３記載の
転炉設備。[Claims] 1. It has a top-blown oxygen lance and a plurality of triple-tube tuyeres at the bottom of the furnace, and supplies iron-containing cold material into the furnace where a seed metal exists,
Charcoal material is passed through the inner tube of the triple-tube tuyeres together with non-oxidizing gas.
A converter dedicated to melting that melts iron-containing refrigerant to obtain high-carbon molten iron by blowing oxygen from the middle pipe and non-oxidizing gas for cooling from the outer pipe, and supplying oxygen from the top-blowing oxygen lance, and the top-blowing oxygen lance. It also has a plurality of high carbon molten iron stirring gas injection tuyeres at the bottom of the furnace, which blows stirring gas into the high carbon molten iron from the bottom and supplies oxygen from the top blowing oxygen lance while stirring the high carbon molten iron to produce the desired composition of molten steel. The melting-refining converter consists of a converter exclusively for refining, which has a top-blowing oxygen lance, and a converter for melting and refining, which has a top-blowing oxygen lance and has replaceable triple-tube tuyeres and stirring gas blowing tuyeres at the bottom of the furnace. When repairing the furnace, a triple pipe is installed at the bottom of the common converter, and iron-containing cold material is supplied into the furnace where the seed water is present, and carbonaceous material is fed with non-oxidizing gas from the inner pipe of the triple pipe tuyere. Oxygen is blown into the inner pipe, non-oxidizing gas for cooling is blown into the outer pipe, and oxygen is supplied from the top-blown oxygen lance to melt the iron-containing cold material and operate as a melting furnace to obtain high-carbon molten iron. When repairing a dedicated converter, a stirring gas blowing tuyere is installed, and the high-carbon molten iron is used as a smelting furnace by bottom-blowing stirring gas into the high-carbon molten iron, stirring it, and supplying oxygen from the top-blowing oxygen lance to produce molten steel with the required composition. Converter equipment characterized by being operated. 2. The relationship between the capacities α, β, and γ (t/ch) of the melting-only converter, the melting-refining converter, and the refining-only converter determines the required amount of seed metal for the melting-only converter and the melting-refining converter. 2. The converter equipment according to claim 1, wherein (t), α=β=γ+δ. 3. The relationship between the capacities α, β, and γ (t/ch) of the melting-only converter, the melting-refining converter, and the refining-only converter is α, where the required amount of seed metal for the melting-only converter is δ(t). Converter equipment according to claim 1, characterized in that =β+δ=γ+δ. 4. The converter equipment according to claims 1 to 3, wherein the stirring gas blowing tuyere is a double pipe tuyere. 5. The stirring gas blowing tuyere has a plurality of thin tubes in the tuyere refractory block, and the thin tube is a through-pipe tuyere formed by joining to a wind box, according to claims 1 to 3. Converter equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63003132A JPH01180913A (en) | 1988-01-12 | 1988-01-12 | Converter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63003132A JPH01180913A (en) | 1988-01-12 | 1988-01-12 | Converter equipment |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5235802A Division JPH06316719A (en) | 1993-08-27 | 1993-08-27 | Converter steelmaking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180913A true JPH01180913A (en) | 1989-07-18 |
| JPH0461044B2 JPH0461044B2 (en) | 1992-09-29 |
Family
ID=11548827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63003132A Granted JPH01180913A (en) | 1988-01-12 | 1988-01-12 | Converter equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01180913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101018663B1 (en) * | 2002-11-08 | 2011-03-04 | 에스엠에스 지마크 악티엔게젤샤프트 | Vessel for the metallurgical treatment of pig iron, steel melts and similar |
-
1988
- 1988-01-12 JP JP63003132A patent/JPH01180913A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101018663B1 (en) * | 2002-11-08 | 2011-03-04 | 에스엠에스 지마크 악티엔게젤샤프트 | Vessel for the metallurgical treatment of pig iron, steel melts and similar |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0461044B2 (en) | 1992-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101445848B (en) | Process and device for continuous steelmaking from ferriferous material | |
| CN108148942B (en) | A kind of converter slag stays slag gasification dephosphorization method and recycles smelting process | |
| CN103045789B (en) | Converter smelting method for high-silicon molten iron generated during new blow-in of blast furnace | |
| US4936908A (en) | Method for smelting and reducing iron ores | |
| CN107419051B (en) | Promote the smelting process of converter scrap melting using gasification dephosphorized slag | |
| EP0605535A1 (en) | Process for production of iron. | |
| CN101684507B (en) | Direct steel making technique by reducing iron ore with gas | |
| CN103060510A (en) | High scrap ratio smelting method by adopting gas to heat | |
| CN107245637A (en) | A kind of AOD smelts the method and a kind of AOD furnace of high manganese stainless steel | |
| CN101665849B (en) | Continuous steel making process for iron ore | |
| JPH073323A (en) | Converter for steel production | |
| CN109207672A (en) | A kind of production method of Slagoff method and ultra-low phosphoretic steel in ultra-low phosphoretic steel production process | |
| US3232748A (en) | Process for the production of steel | |
| CN1048562A (en) | Double flow compound top blown steel making process and oxygen rifle thereof | |
| CN102312044B (en) | Method for smelting with electric furnace | |
| US4302244A (en) | Steel conversion method | |
| CN105039639A (en) | Converter combined-blowing air brick unblocking recovering system and method | |
| CN101717840A (en) | Electric furnace steel-making method utilizing like graphite to replace pig iron to match with carbon | |
| JP2918646B2 (en) | Smelting reduction furnace | |
| JPH01180913A (en) | Converter equipment | |
| CN108842027A (en) | A kind of dephosphorization converter finishing slag gasification dephosphorization method and smelting process | |
| US4007035A (en) | Method of using an expendable tap hole tuyere in open hearth decarburization | |
| CN113637820A (en) | Converter bottom blowing gas supply branch pipe differentiation control method and system based on image recognition | |
| JP2661478B2 (en) | Cylindrical furnace and method for producing hot metal using the same | |
| JP3286114B2 (en) | Method for producing high carbon molten iron from scrap iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070929 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080929 Year of fee payment: 16 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080929 Year of fee payment: 16 |