JPS63279092A - Molten metal vessel - Google Patents
Molten metal vesselInfo
- Publication number
- JPS63279092A JPS63279092A JP11375587A JP11375587A JPS63279092A JP S63279092 A JPS63279092 A JP S63279092A JP 11375587 A JP11375587 A JP 11375587A JP 11375587 A JP11375587 A JP 11375587A JP S63279092 A JPS63279092 A JP S63279092A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- phase
- molten
- cooling block
- slag
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims description 61
- 229910052751 metal Inorganic materials 0.000 title claims description 61
- 238000001816 cooling Methods 0.000 claims description 54
- 239000002893 slag Substances 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000010410 layer Substances 0.000 description 8
- 239000011819 refractory material Substances 0.000 description 7
- 238000003723 Smelting Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(fi累上の利用分野)
本発明は、金属の溶錬炉、精錬炉、あるいは金属浴を使
用する石炭のガス化炉等の溶融金属容器(以下、「溶融
金属容器」と総称する)、特にそれらにおける溶融スラ
グ相と溶融金属相との境界部をより効果的に強制冷却す
る手段を備えた、炉壁溶損の防止もしくは低減に有効な
溶融金属容器に関する。DETAILED DESCRIPTION OF THE INVENTION (Fields of Application of FI) The present invention is applicable to molten metal containers (hereinafter referred to as "molten metal containers") such as metal smelting furnaces, smelting furnaces, or coal gasification furnaces using metal baths. The present invention relates to molten metal containers which are effective in preventing or reducing furnace wall melting damage, and which are equipped with means for more effectively forced cooling of the boundary between the molten slag phase and the molten metal phase.
(従来の技術)
溶融金属容器にあって溶融スラグ相表面より上部に、で
きるだけこのスラグ相の表面に近づけて、何らかの強制
冷却ブロックを遠用することは公知である(例えば特公
昭57−35389号公報参照)。(Prior Art) It is known to use some kind of forced cooling block above the surface of the molten slag phase in a molten metal container, as close as possible to the surface of this slag phase (for example, Japanese Patent Publication No. 57-35389). (see official bulletin).
しかし、上述した溶融金属容器においては、溶融スラグ
相表面から上部のガス相相当部のみでな(、溶融、スラ
グ相表面のや\上部から、溶融金属相表面相当部のや一
下部までの領域における上下方向に、より広い範囲に亘
る耐火物の溶損を低減あるいは防止することが、炉寿命
延長・耐火物コストの低減の観点からなお大きな課題と
な、うている。However, in the above-mentioned molten metal container, not only the upper part corresponding to the gas phase from the surface of the molten slag phase but also the area from the upper part of the molten slag phase surface to the lower part of the part equivalent to the molten metal phase surface Reducing or preventing melting of refractories over a wider range in the vertical direction remains a major challenge from the perspective of extending furnace life and reducing refractory costs.
この問題点を解決する手段として、銅溶錬の分野では、
溶融金属相表面の下部相当部まで強制冷却を行うことが
公知となっている。例えば、「品用技報」隘27.19
83年12月、1〜16頁には、スラグライン相当部に
水冷ジャケットの強制冷却ブロックを使用する例が示さ
れている。一方、鉄精錬や鉄浴石炭ガス化の分野では、
より積極的冷却法として、例えば実開昭53−1211
11号公報には全鉄皮水冷転炉が、特開昭58−171
482号公報には凝固金属(またはスラグ)層の付着に
着目したヒートパイプ冷却手段が、更に特開昭61−1
23697号公報には溶融金属・スラグ相の境界部に直
接強制冷却ブロックを適用する方法等が提案されている
。As a means to solve this problem, in the field of copper smelting,
It is known to perform forced cooling to a portion corresponding to the lower part of the surface of the molten metal phase. For example, "Product Technical Report" 27.19
December 1983, pages 1 to 16, shows an example of using a forced cooling block of a water cooling jacket in a portion corresponding to the slag line. On the other hand, in the fields of iron smelting and iron bath coal gasification,
As a more active cooling method, for example, Utility Model Application No. 53-1211
Publication No. 11 describes a water-cooled converter with all iron skins, published in Japanese Patent Application Laid-Open No. 58-171.
No. 482 discloses a heat pipe cooling means that focuses on the adhesion of a solidified metal (or slag) layer, and is further disclosed in Japanese Patent Application Laid-Open No. 61-1
Japanese Patent No. 23697 proposes a method in which a forced cooling block is applied directly to the boundary between the molten metal and slag phases.
しかし、w4溶錬で十分成熟している上記技術、または
上記三提案等を実際に溶融鉄を収容する溶融金属容器の
分野に適用しようとした場合、特にその処理温度が高い
場合は、1650℃程度に達することがあることから、
強制冷却ブロック前面の耐火物、あるいは該ブロックの
耐溶損性・長時間信頼性の点で、特に溶融金属相表面レ
ベル以下を冷却の対象とするときに十分実用化技術の域
に達していない、この主要な理由は、強制冷却ブロック
のいわゆる一方向冷却に起因する冷却能不足と考えてよ
い。However, when trying to apply the above-mentioned technology, which is fully matured in W4 smelting, or the above three proposals, etc. to the field of molten metal containers that actually contain molten iron, especially when the processing temperature is high, 1650℃ Because it can reach a certain degree,
In terms of the refractory material in front of the forced cooling block, or the erosion resistance and long-term reliability of the block, the technology has not yet reached the level of practical use, especially when cooling below the surface level of the molten metal phase. The main reason for this can be considered to be insufficient cooling capacity due to so-called unidirectional cooling of the forced cooling block.
また全く別個の技術として、特開昭60−58487号
公報には、いわゆる上吹鉄浴石炭ガス化炉の場合におい
て、ガス相に接する領域の炉径を拡大して、飛散してく
る高温スラグと炉壁耐火物との接触を極力回避して、耐
火物の保護を達成する考えが提案されているが、この場
合にあってもその着目点はなお、ガス相和当部炉壁の保
護に留まっている。In addition, as a completely separate technique, Japanese Patent Application Laid-Open No. 60-58487 discloses that in the case of a so-called top-blown iron bath coal gasifier, the diameter of the furnace in the region in contact with the gas phase is expanded to reduce the amount of high-temperature slag that is scattered. It has been proposed to protect the refractories by avoiding contact with the furnace wall refractories as much as possible, but even in this case, the focus is still on the protection of the furnace wall in the gas phase. remains.
(発明が解決しようとする問題点)
これら公知の発明にあっては、ガス相相当部から溶融金
属相表面の下部相当部に亘る広い領域において強制冷却
ブロックを垂直方向に揃えて配する構造を採用しており
、いずれも容器壁に沿うてはゾ垂直方向に、強制冷却ブ
ロックの稼動面を揃えている。(Problems to be Solved by the Invention) These known inventions have a structure in which forced cooling blocks are arranged vertically in a wide area ranging from a portion corresponding to the gas phase to a portion corresponding to the lower part of the surface of the molten metal phase. In both cases, the operating surface of the forced cooling block is aligned vertically along the container wall.
したがって、従来、特に溶融金属相表面下の冷却ブロッ
クはいわゆる一方向冷却の効果しか期待できず、浴の攪
拌が微少な条件下においても、良好な熱伝導性を有する
溶融金属から、直接的に常時非常に高い熱流束を受ける
ことになる。このために、上述のような垂直稼動面では
、公知の高性能強制冷却ブロックの保護に一般的に不可
欠とされる何らかのいわゆる表面コーティング層の形成
が困難であり、かかる冷却ブロックは常に溶損破壊の危
険に4されており、炉寿命、信頼性の点で十分ではない
。Therefore, in the past, cooling blocks under the surface of the molten metal phase could only be expected to have a so-called unidirectional cooling effect, and even under conditions with minimal agitation of the bath, the molten metal, which has good thermal conductivity, could be directly cooled. It is constantly subjected to very high heat flux. For this reason, in the vertical operating planes mentioned above, it is difficult to form any so-called surface coating layer, which is generally essential for the protection of known high-performance forced cooling blocks, and such cooling blocks are always subject to erosion and destruction. The furnace life and reliability are not sufficient.
この種の危険は、冷却ブロックの表面に高熱伝導性の耐
火物を配した構造の場合においても、浴の振動によるス
ラグとの接触で生ずる耐火物の侵食、あるいはスポーリ
ング等に起因する耐火物の減寸、クラックへの溶融金属
の浸透等の現象が不可避であるため1.同様に存在して
いる。Even in the case of a structure in which a highly thermally conductive refractory is placed on the surface of the cooling block, this type of danger can occur due to corrosion of the refractory or spalling caused by contact with slag due to bath vibration. Phenomena such as reduction in size and penetration of molten metal into cracks are unavoidable; 1. exists as well.
かくして、本発明の目的は、基本的に前述の特開昭61
−123697号および同60〜58487号開示の手
段を改良し、安全性・信頼性のより高い、溶融金属容器
のいわゆるスラグライン近傍相当壁の溶損防止ないし低
減を解決する手段を提供することにある。Thus, the object of the present invention is basically to
- To provide a means for preventing or reducing melting damage of the wall corresponding to the so-called slag line vicinity of a molten metal container, which improves the means disclosed in No. 123697 and No. 60 to No. 58487, and has higher safety and reliability. be.
(問題点を解決するための手段)
ここに、本発明者らは、特に溶融金属相と接触する強制
冷却ブロックの表面に薄い凝固相の付着をはり常時的に
生起させることによって、冷却ブロックをはり完全に保
護することができ、これにより上述の問題点を有利に解
決できることに着目し、その実現手段を見出し、本発明
を完成したものである。(Means for Solving the Problems) Here, the present inventors have developed a cooling block by constantly causing a thin solidified phase to adhere to the surface of the forced cooling block that comes into contact with the molten metal phase. The inventors have focused on the fact that the beams can be completely protected, thereby advantageously solving the above-mentioned problems, and have found a means to achieve this, thereby completing the present invention.
よって、本発明は、溶融金属および溶融スラグを収容す
る溶融金属容器であって、該溶融金属容器内に貯溜され
る溶融スラグ相と溶融金属相の境界線に接する領域の容
器壁部に、容器内側に向ってゆるやかな下り勾配を設け
た傾斜部と、該傾斜部の一部に配した強制冷却ブロック
、さらに必要により、溶融スラグ相および/またはガス
相に接する領域の、前記傾斜部に隣接する容器壁部の少
なくとも一部に配した強制冷却ブロックを備えたことを
特徴とする溶融金属容器である。Therefore, the present invention provides a molten metal container for storing molten metal and molten slag, in which a container wall portion in a region touching a boundary line between a molten slag phase and a molten metal phase stored in the molten metal container is provided. A sloped portion with a gentle downward slope toward the inside, a forced cooling block disposed in a part of the sloped portion, and, if necessary, a region adjacent to the sloped portion in contact with the molten slag phase and/or the gas phase. This molten metal container is characterized in that it is equipped with a forced cooling block disposed on at least a portion of the container wall.
ここに、溶融金属容器はすでに述べたところである。前
記傾斜部の設置位置は、収容される溶融スラグ相と溶融
金属相との境界線が該傾斜部の可及的に低位置にくるよ
うになる領域であれば良く、またその傾斜の程度も後述
するセルフコーテイング膜が形成されればよく、特に制
限的ではない。Here, the molten metal container has already been mentioned. The installation position of the inclined part may be such that the boundary line between the molten slag phase and the molten metal phase to be accommodated is located at the lowest possible position of the inclined part, and the degree of the inclination is also determined. There is no particular limitation as long as a self-coating film, which will be described later, is formed.
より広い冷却面とより少ない溶融金属あるいはスラグ層
とを接触させて冷却効果を高めようとするのである。The idea is to increase the cooling effect by bringing a wider cooling surface into contact with a smaller layer of molten metal or slag.
なお、強制冷却ブロックはすでに公知であって、水冷銅
製ジャケットが例示されるが、特定のものには制限され
ない、必要により、所期の冷却効果を阻害しない限り、
その表面に高熱伝導性耐火物層を設けてもよい。Note that the forced cooling block is already known, and a water-cooled copper jacket is exemplified, but it is not limited to a specific one.
A highly thermally conductive refractory layer may be provided on the surface.
このように、本発明によれば、前述の従来技術1
の主要な問題点は、下述の手段によって
解決されうる。Thus, according to the present invention, the above-mentioned prior art 1
The main problems of can be solved by the means described below.
先ず、基本的な容器形状として、ゆるやかな傾斜部の一
部に、所望の場合は従来の垂直もしくは円弧状炉壁部の
冷却ブロックと接して、同様な冷却ブロックを配置する
。First, the basic vessel shape is such that a cooling block similar to that of a conventional vertical or arcuate furnace wall is placed on a portion of the gently sloped section, if desired.
次に、溶融金属相表面位置を、その傾斜部の冷却ブロッ
ク内の可及的低位置に保持して、該冷却ブロックと溶融
金属相の接触を極力、僅少ないし薄い層の範囲に留め、
高い熱流束負荷を軽減する。Next, the surface position of the molten metal phase is maintained at the lowest possible position in the cooling block of the inclined part, and the contact between the cooling block and the molten metal phase is kept as small as possible within the range of a thin layer,
Reduce high heat flux loads.
すなわち、冷却ブロックの一方向冷却効果を、薄い層と
なった溶融金属相へ充分に及ぼす、一方、好ましくは、
溶融スラグ相の壁近傍部は傾斜部の上に隣接する炉壁に
設けた他の冷却ブロックからも冷却の影響を受ける二方
向冷却となるよう構成する。That is, the unidirectional cooling effect of the cooling block is sufficiently exerted on the thin layer of the molten metal phase, while preferably
The molten slag phase near the wall is configured to be cooled in two directions, where it is also affected by cooling from other cooling blocks provided on the furnace wall adjacent to the sloped portion.
このような手段によって、冷却ブロックの表面には、溶
融金属またはスラグの非常に薄い凝固相、いわゆるセル
フコーテイング膜が形成され、冷却ブロックの表面およ
び全体をはり完全に保護することが可能となる。かかる
凝固層は、溶融金属および/または溶融スラグから成る
ものである。By such means, a very thin solidified phase of molten metal or slag, a so-called self-coating film, is formed on the surface of the cooling block, making it possible to completely protect the surface and the entire cooling block. Such a solidified layer consists of molten metal and/or molten slag.
溶融スラグ相の上方にはガス相が存在し、それらと接す
る炉壁部分には必要により少なくともその一部に冷却パ
ネルが設けられてもよい。A gas phase exists above the molten slag phase, and a cooling panel may be provided on at least a portion of the furnace wall portion in contact with the gas phase, if necessary.
この種の比較的高温の溶融スラグ・金属と直接接触する
高性能強制冷却ブロックは、前述のように水冷*mジャ
ケットであってもよく、例えば鋼の連続鋳造技術分野の
水冷鋼NwI型としてそれ自体公知であるものを利用す
ればよい。This type of high-performance forced cooling block that comes into direct contact with relatively high-temperature molten slag/metal may be a water-cooled*m jacket as described above, for example, as water-cooled steel NwI type in the field of continuous steel casting technology. Any known material may be used.
(作用) 次に、本発明をさらに添付図面を参照して説明する。(effect) The invention will now be further described with reference to the accompanying drawings.
第1図は、溶融スラグ相に接する炉壁部分にも、同様の
強制冷却ブロックを、更にガス相に接する炉壁部分には
、水冷パネルを、それぞれ配置させた、本発明にかかる
溶融金属容器の部分断面図である。FIG. 1 shows a molten metal container according to the present invention, in which a similar forced cooling block is also arranged in the furnace wall part that is in contact with the molten slag phase, and a water cooling panel is also arranged in the furnace wall part that is in contact with the gas phase. FIG.
溶融金属容器内には上からガス相1、溶融スラグ相2、
そして溶融金属相3が存在し、本発明にかかる溶融金属
容器には溶融スラグ相と溶融金属相との境界領域に接す
る領域に相当する部分に傾斜部4が設けられている。傾
斜部とすることにより、より高い熱流束負荷を与える溶
融金属と冷却ブロックの接触を極力僅少ないし薄い金属
相の範囲に留め、溶融金属の一方向凝固を可及的に速や
かに促進するのである。この傾斜部4には冷却ブロック
6が設けられており、その上面には図中黒く塗り潰して
示す薄い凝固層5が形成されている。Inside the molten metal container, from the top, there are gas phase 1, molten slag phase 2,
A molten metal phase 3 is present, and the molten metal container according to the present invention is provided with an inclined portion 4 in a portion corresponding to a region in contact with the boundary region between the molten slag phase and the molten metal phase. By forming the sloped part, the contact between the molten metal, which provides a higher heat flux load, and the cooling block is minimized and kept within the range of a thin metal phase, thereby promoting unidirectional solidification of the molten metal as quickly as possible. . A cooling block 6 is provided on the inclined portion 4, and a thin solidified layer 5, shown in black in the figure, is formed on the upper surface of the cooling block 6.
本発明の好適態様にあっては、前記傾斜部4に隣接する
上方の炉壁には同じく強制冷却ブロック6が設けられて
おり、これにより溶融スラグの二方向凝固が可能となり
、前記凝固層の形成は大幅に促進される。In a preferred embodiment of the present invention, a forced cooling block 6 is also provided on the upper furnace wall adjacent to the inclined portion 4, which enables two-way solidification of the molten slag and prevents the formation of the solidified layer. Formation is greatly promoted.
傾斜部4の他端には通常の耐火物7により炉壁が構成さ
れており、これらは公知の形態のものであってもよい、
また前記ガス相に接する炉壁部分には、水冷パネル8が
設けられており、その外側は耐火物7を介して鉄皮9に
より覆われている。At the other end of the inclined portion 4, a furnace wall is constructed of ordinary refractories 7, and these may be of a known form.
A water-cooled panel 8 is provided on the furnace wall portion in contact with the gas phase, and the outside thereof is covered with an iron skin 9 with a refractory 7 interposed therebetween.
第2図社、加圧もしくは減圧型容器への適用例を示す同
じく部分断面図である。第1図と同一部材は同一符号で
示す、炉壁面が球形をなしている以外は第1図と実質上
同一であり、構造の説明については第1図のそれを援用
し、これ以上の説明を省略する。FIG. 2 is a partial cross-sectional view of the same, showing an example of application to a pressurized or depressurized container. The same members as in Fig. 1 are indicated by the same reference numerals, and except that the furnace wall surface is spherical, it is substantially the same as in Fig. 1.For the explanation of the structure, that of Fig. 1 will be referred to, and further explanation will be given. omitted.
第2図に示すこの種の耐圧容器の場合、その鉄皮の所要
特性上、第1図のような複雑な炉形状とすることは困難
であり、一般的に球形・円筒形もしくはこれに近い形状
が採用される。したがって、鉄皮9内部において、冷却
ブロック6と耐火物7の配置を適宜工夫する必要がある
が、本発明はあらゆる容器形状に対しても容易に適用可
能である。In the case of this type of pressure-resistant vessel shown in Figure 2, it is difficult to create a complex furnace shape as shown in Figure 1 due to the required characteristics of the shell, and it is generally spherical, cylindrical, or close to this. The shape is adopted. Therefore, it is necessary to appropriately arrange the cooling block 6 and the refractory 7 inside the steel shell 9, but the present invention can be easily applied to any container shape.
また、これらの炉もしくは容器の稼動初期や、稼動中に
おいて、溶融相と強制冷却ブロックの直1
接接触を避°バ゛場合・該7°・′。表面0一
部もしくは全部に何らかの耐火物を配した公知の装置を
通用することも可能であり、これらも本発明の範囲内に
属する。In addition, during the initial operation of these furnaces or vessels, and during operation, direct contact between the molten phase and the forced cooling block should be avoided.
If contact is to be avoided: 7°.' It is also possible to use a known device in which some kind of refractory material is placed on a part or all of the surface, and these also fall within the scope of the present invention.
いわゆる上吹鉄浴石炭ガス化の場合、その主目的とする
ところから、金属の精錬反応の如き浴の強攪拌を必要と
せず、したがって浴表面の、特に容器の壁近傍部分は比
較的静かな様相を呈しており、溶融金属相に相当する炉
壁部の耐火物はほとんど溶損を受けないが、溶融スラグ
・金属の境界部から上部の容器壁部は、貯溜スラグおよ
び高温の飛散スラグによつて著しい溶損を受け、該炉壁
部に強制冷却ブロックを適用しない場合は、如何に最高
級の、かつ厚い耐火物と云えども、約1ケ月以上の寿命
達成は困難であった。しかしながら、本発明に従い、た
て型円筒転炉の垂直炉壁内に、第2図に示した配置を適
用したところ、所期の凝固相が付着して殆ど冷却ブロッ
クの溶損発生個所がなく、はぼ1年程度の炉寿命の延長
が予想される結果となった。In the case of so-called top-blown iron bath coal gasification, because its main purpose is that it does not require strong stirring of the bath as in metal refining reactions, the bath surface, especially the area near the container wall, is relatively quiet. The refractory on the furnace wall, which corresponds to the molten metal phase, hardly suffers from melting damage, but the container wall above the boundary between the molten slag and metal is damaged by the accumulated slag and high-temperature flying slag. As a result, the furnace wall suffered significant corrosion damage, and unless a forced cooling block was applied to the furnace wall, it was difficult to achieve a service life of more than about one month, no matter how high-quality and thick the refractory was. However, when the arrangement shown in Fig. 2 was applied to the vertical furnace wall of a vertical cylindrical converter according to the present invention, the desired solidification phase adhered and there was almost no melting damage in the cooling block. As a result, the furnace life is expected to be extended by about one year.
また浴のや一強攪拌を要する鉄鉱石の溶融還元炉として
ガス化炉を約1600℃の鉄浴温度で使用した場合、過
剰な底吹攪拌ガスの回避、浴面積の適切な選択、浴表面
の炉壁近傍へのコークス・塊状生石灰の投入等の対策に
よって、炉壁近傍の浴面振動を抑制することにより、長
寿命の安定した操業が可能となった。In addition, when a gasification furnace is used as a smelting reduction furnace for iron ore, which requires strong stirring of the bath, at an iron bath temperature of approximately 1600°C, it is necessary to avoid excessive bottom-blown stirring gas, appropriately select the bath area, and Measures such as injecting coke and lump quicklime near the furnace wall have suppressed bath surface vibration near the furnace wall, making stable operation with a long life possible.
(発明の効果)
以上のように、本発明は溶融金属容器のいわゆるスラグ
ライン寿命の延長と耐火物コストの低減に多大の効用を
発揮するものであり、特に、比較的静かな浴面で処理可
能なアーク加熱型の容器や、鋼目溶炉等の分野でも有効
である。この場合においても、ガス相の強制冷却ブロッ
ク(パネル)は必ずしも必要としないことは言うまでも
ない。(Effects of the Invention) As described above, the present invention is highly effective in extending the so-called slag line life of the molten metal container and reducing the cost of refractories. It is also effective in the fields of arc-heated containers and steel-grained blast furnaces. Even in this case, it goes without saying that a gas phase forced cooling block (panel) is not necessarily required.
第1図は、本発明にかかる溶融金属容器の部分断面図;
および
第2図は、加圧もしくは減圧型容器への適用例を示す同
じく部分断面図である。
1:ガス相 2:溶融スラグ相3:溶融金属
相 4:傾斜部
5:凝固相 6:冷却ブロック7:耐火物
8:冷却パネル9:鉄皮FIG. 1 is a partial sectional view of a molten metal container according to the present invention;
and FIG. 2 is a partial sectional view showing an example of application to a pressurized or depressurized container. 1: Gas phase 2: Molten slag phase 3: Molten metal phase 4: Inclined portion 5: Solidified phase 6: Cooling block 7: Refractory
8: Cooling panel 9: Iron skin
Claims (2)
器であって、該溶融金属容器内に貯溜される溶融スラグ
相と溶融金属相の境界線に接する領域の容器壁部に、容
器内側に向ってゆるやかな下り勾配を設けた傾斜部と、
該傾斜部の少なくとも一部に配した強調冷却ブロックを
備えたことを特徴とする溶融金属容器。(1) A molten metal container that stores molten metal and molten slag, in which a wall portion of the molten metal container is placed in a region that is in contact with the boundary line between the molten slag phase and the molten metal phase stored in the molten metal container. A slope with a gentle downward slope,
A molten metal container comprising an accentuated cooling block disposed on at least a portion of the slope.
器であって、該溶融金属容器内に貯溜される溶融スラグ
相と溶融金属相の境界線に接する領域の容器壁部に、容
器内側に向ってゆるやかな下り勾配を設けた傾斜部と、
該傾斜部の少なくとも一部に配した強制冷却ブロック、
さらに溶融スラグ相および/またはガス相に接する領域
の、前記傾斜部に隣接する容器壁部の少なくとも一部に
配した強制冷却ブロックを備えたことを特徴とする溶融
金属容器。(2) A molten metal container containing molten metal and molten slag, in which a wall portion of the molten metal container is placed in a region touching a boundary line between a molten slag phase and a molten metal phase stored in the molten metal container toward the inside of the container. A slope with a gentle downward slope,
a forced cooling block disposed on at least a portion of the slope;
A molten metal container further comprising a forced cooling block disposed on at least a portion of the container wall adjacent to the inclined portion in a region in contact with the molten slag phase and/or the gas phase.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11375587A JPS63279092A (en) | 1987-05-11 | 1987-05-11 | Molten metal vessel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11375587A JPS63279092A (en) | 1987-05-11 | 1987-05-11 | Molten metal vessel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63279092A true JPS63279092A (en) | 1988-11-16 |
Family
ID=14620311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11375587A Pending JPS63279092A (en) | 1987-05-11 | 1987-05-11 | Molten metal vessel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63279092A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009233744A (en) * | 2008-03-05 | 2009-10-15 | National Institute Of Advanced Industrial & Technology | Container capable of housing object |
WO2010021196A1 (en) * | 2008-08-22 | 2010-02-25 | 独立行政法人産業技術総合研究所 | Container capable of storing object |
-
1987
- 1987-05-11 JP JP11375587A patent/JPS63279092A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009233744A (en) * | 2008-03-05 | 2009-10-15 | National Institute Of Advanced Industrial & Technology | Container capable of housing object |
WO2010021196A1 (en) * | 2008-08-22 | 2010-02-25 | 独立行政法人産業技術総合研究所 | Container capable of storing object |
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