JPS602609A - Construction of wall of blast furnace - Google Patents
Construction of wall of blast furnaceInfo
- Publication number
- JPS602609A JPS602609A JP10918483A JP10918483A JPS602609A JP S602609 A JPS602609 A JP S602609A JP 10918483 A JP10918483 A JP 10918483A JP 10918483 A JP10918483 A JP 10918483A JP S602609 A JPS602609 A JP S602609A
- Authority
- JP
- Japan
- Prior art keywords
- shell
- lining
- opening
- cooling box
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は高炉等の高温冶金炉に使用される炉体詳しくは
炉壁構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace body used in a high-temperature metallurgical furnace such as a blast furnace, and more particularly to a furnace wall structure.
一般に製鉄用高炉は全高にわたって多量の耐火物によっ
て内張シされている。これら耐火物は炉の位置によって
化学的及び物理的浸食要因、炉体冷却方式の組み合せな
どを考慮して、その材質、構造が選定される。朝顔、炉
腹および炉胸部は厚さ500〜900鵡の内張シ耐火れ
んがを積み、炉胸の中段以下は炉体冷却設備によシ冷却
することが行われている。Generally, a blast furnace for steelmaking is lined with a large amount of refractory over its entire height. The material and structure of these refractories are selected depending on the location of the furnace, taking into consideration chemical and physical erosion factors, the combination of furnace cooling methods, etc. The morning glory, the furnace belly, and the furnace chest are lined with refractory bricks with a thickness of 500 to 900 square meters, and the middle and lower parts of the furnace chest are cooled by furnace body cooling equipment.
次に従来の炉壁構造図を第1図に、更に第2図に第1図
のA矢視図を示す。Next, FIG. 1 shows a conventional furnace wall structure, and FIG. 2 shows a view taken in the direction of arrow A in FIG. 1.
従来、高炉炉体耐火れんかには、第1図に示す如<Si
C質、高アルミナ質等の耐火れんが2が鉄皮1の内側に
使用され、れんが単体では品質の向上がなされたが、ラ
イニング構造体としては、同質の耐火モルタルで構成さ
れた目地部3が耐火れんが2間に有シ、この目地部3は
、耐火れんが2に比較して強度、耐食性が非常に弱いた
め、耐火れんがの脱落損傷が多く、特に5〜6年使用し
た高炉では損傷の大きな要因となっていた。また耐火れ
んが積構造の場合は冷却装置として例えば冷却面4を耐
火れんが2内に挿入し、耐火れんが2と冷却面4との間
に膨張吸収材5を挾み入れた構造となっている。また鉄
皮1と耐火れんが2間にも膨張吸収材5を挿入し膨張を
吸収している。Conventionally, blast furnace furnace body refractory bricks contain <Si> as shown in Fig. 1.
Refractory bricks 2 of C quality, high alumina quality, etc. are used inside the steel shell 1, and the quality of the bricks alone has been improved, but as a lining structure, joints 3 made of the same quality refractory mortar are used. There is a joint between the refractory bricks 2, and this joint 3 has very weak strength and corrosion resistance compared to the refractory bricks 2, so the refractory bricks often fall off and are damaged, especially in blast furnaces that have been used for 5 to 6 years. This was a contributing factor. In the case of a refractory brick structure, the cooling device has a structure in which, for example, a cooling surface 4 is inserted into the refractory brick 2, and an expansion absorbing material 5 is interposed between the refractory brick 2 and the cooling surface 4. Further, an expansion absorbing material 5 is inserted between the iron shell 1 and the refractory bricks 2 to absorb expansion.
これら従来の冷却面4の形状は、耐火れんかに挿入する
ため、耐火れんが2の形状に合わせた形状即ち第2図に
示す如くプレート型(角型)にせざるを得なく、この場
合鉄皮開口部の形状も角型となるため、鉄皮亀裂の面で
応力集中を起し易く、特にライニングの損傷が大きい部
位ではこの冷却面開孔部を起点に鉄皮亀裂が発生し易か
った。Since the conventional cooling surface 4 is inserted into the refractory brick, it has to be shaped to match the shape of the refractory brick 2, that is, a plate shape (square shape) as shown in FIG. Since the shape of the opening is also rectangular, stress concentration tends to occur on the surface of the steel skin crack, and especially in areas where the lining is severely damaged, steel skin cracks are likely to occur starting from the cooling surface opening.
またプレート型冷却函の場合、剛性が小さく操業中の装
入物の荷重によシ曲損し易く、これの取替えも容易では
なかった。In addition, in the case of a plate-type cooling box, its rigidity is low and it is easily bent and damaged by the load of the charge during operation, and it is not easy to replace it.
本発明は叙上の従来炉体の炉壁構造を、従朶使用の耐火
れんかに比較しても耐摩耗性、耐食性、耐スポーリング
性に優れた不定形耐火物ライニング材を使用しかつ冷却
面を改善するととくよシ、ライニング耐用性向上、及び
冷却面の製造コスト減少と鉄皮亀裂の軽減更に補修を容
易に効率的にすること等を目的とするものである。The present invention replaces the furnace wall structure of the conventional furnace body with a monolithic refractory lining material that has superior wear resistance, corrosion resistance, and spalling resistance compared to conventionally used refractory bricks. The purpose of improving the cooling surface is to improve the durability of the lining, reduce the manufacturing cost of the cooling surface, reduce cracks in the steel shell, and make repairs easier and more efficient.
本発明は不定形耐火物ライニング材と鉄皮開口部が丸型
である冷却面を前記不定形耐火物ライニング材内に膨張
吸収材を介して挿入してなることを特徴とする炉壁構造
である。The present invention provides a furnace wall structure comprising a monolithic refractory lining material and a cooling surface having a round shell opening inserted into the monolithic refractory lining material through an expansion absorbing material. be.
第3図は本発明の実施例襲様例である炉壁構造を示し、
第4図はその人矢視図である。FIG. 3 shows a furnace wall structure that is an example of an embodiment of the present invention.
FIG. 4 is a view of the person.
本発明は第6図に示す如く上述のれんが積構造の弱点で
ある目地部を無くレライニングの耐用性を向上するため
次の第1表に示す如〈従来のれんがと比較して同等もし
くはそれ月上の品質を有する不定形耐火物ライニング材
6を鉄皮1の内側に不定形耐火物6との熱変位吸収を容
易にするために熱伝導の大きい可縮性シートよ構成る膨
張吸収材5を介して充填したものである。なお不定形耐
火物ライニング材6の充填に当っては流し込み施工また
はプレキャスト品の据付及びこれらの複合のいずれかで
施工できる。As shown in Fig. 6, the present invention eliminates the joints, which are the weak points of the brickwork structure, and improves the durability of the relining, as shown in Table 1 below. An expansion absorbing material consisting of a high-quality monolithic refractory lining material 6 and a highly thermally conductive compressible sheet inside the iron shell 1 to facilitate thermal displacement absorption with the monolithic refractory material 6. 5. The filling of the monolithic refractory lining material 6 can be carried out by pouring, installing a precast product, or a combination thereof.
第1表 不定形耐火物ライニング材品質更に冷却装置は
第4図に示す如〈従来のプレート型(角型)から不定形
耐火物ライニング材を使用することによって、冷却面形
状の制約がなくなり、ラウンド型(丸型)冷却面4に熱
変位吸収または冷却面4の交換を容易にするために前述
の構成の膨張吸収材5を巻付けて、不定形耐火物ライニ
ング材内に挿入することが可能となった。Table 1 Quality of monolithic refractory lining material Furthermore, the cooling system is as shown in Figure 4. By using monolithic refractory lining material instead of the conventional plate type (square type), restrictions on the shape of the cooling surface are eliminated. In order to absorb thermal displacement or to facilitate replacement of the cooling surface 4, an expansion absorbing material 5 having the above-described structure can be wrapped around the round cooling surface 4 and inserted into the monolithic refractory lining material. It has become possible.
斯る構成をとることによって、ライニング材関係では第
2表に示す如く、ライニングコストは大巾に低減した。By adopting such a configuration, the lining cost was significantly reduced as shown in Table 2 regarding the lining material.
第2表 不定形ライニングコスト
更に#用件の向上と、耐火れんが積でないため熟練工を
要せず、施工の機械化も容易でアシ、作業環境の良好と
工期短縮も可能となった。更に冷脚装置関係ではラウン
ド型のため、冷却面自身の剛性が大で、曲損が軽減され
、また冷却面製造コストも低減することができた。また
不定形耐火物ライニング材中に冷却面を設置するため、
プレート型に比べ、設置数の増加分散取付が可能で、ラ
イニング材の支持効果、冷却効果が向上され、鉄皮開孔
部は丸型のため応力集中が少ない形状となって、鉄皮亀
裂が軽減できる等、多大な効果がある上、これらの補修
も容易である。Table 2 Irregular lining cost Further improvement in # requirements and since it is not made of refractory bricks, it does not require skilled workers, and the mechanization of construction is easy, creating a good working environment and shortening the construction period. Furthermore, since the cold leg system is round, the rigidity of the cooling surface itself is high, reducing bending damage and reducing the manufacturing cost of the cooling surface. In addition, in order to install a cooling surface in the monolithic refractory lining material,
Compared to the plate type, the number of installations can be increased and distributed installation is possible, the supporting effect and cooling effect of the lining material is improved, and the round openings in the steel shell reduce stress concentration, reducing cracks in the steel skin. Not only does it have great effects, such as reducing the amount of damage, but it is also easy to repair.
なお本発明の炉壁構造は高炉々壁に限定されず他の冶金
炉に適用しても有用外ものであル、不定形耐火物ライニ
ング材としては、夫々用途に適した材質を選定すること
ができる。更に冷却面の材質も鉄製に限らず銅製その他
の材質を使用しうるものである。Note that the furnace wall structure of the present invention is not limited to blast furnace walls, and is not useful even when applied to other metallurgical furnaces.As the monolithic refractory lining material, a material suitable for each application should be selected. I can do it. Furthermore, the material of the cooling surface is not limited to iron, but may also be made of copper or other materials.
第1図は従来の炉壁構造を示す縦断面図、第2図は第1
図のA矢視図、第3図は本発明炉壁構造を示す縦断面図
、第4図は第3図のA矢視図である。
1・・・鉄皮 2・・・耐火れんが 4・・・冷却面5
・・・膨張吸収材 6・・・不定形耐火ライニング材代
理人 弁理士 木 村 三 朗Figure 1 is a vertical cross-sectional view showing the conventional furnace wall structure, and Figure 2 is a vertical cross-sectional view showing the conventional furnace wall structure.
3 is a longitudinal sectional view showing the furnace wall structure of the present invention, and FIG. 4 is a view taken along arrow A in FIG. 3. 1... Iron shell 2... Refractory brick 4... Cooling surface 5
... Expansion absorbing material 6 ... Monolithic fireproof lining material agent Patent attorney Sanro Kimura
Claims (1)
開口部が丸型である冷却面を前記不定形耐火物ライニン
グ材内に膨張吸収材を介して挿入して々ることを特徴と
する炉壁構造In the space hearth body structure, a monolithic refractory lining material and a cooling surface having a round shell opening are inserted into the monolithic refractory lining material via an expansion absorbing material. Characteristic furnace wall structure
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10918483A JPS602609A (en) | 1983-06-20 | 1983-06-20 | Construction of wall of blast furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10918483A JPS602609A (en) | 1983-06-20 | 1983-06-20 | Construction of wall of blast furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS602609A true JPS602609A (en) | 1985-01-08 |
Family
ID=14503773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10918483A Pending JPS602609A (en) | 1983-06-20 | 1983-06-20 | Construction of wall of blast furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS602609A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61187622A (en) * | 1985-02-15 | 1986-08-21 | Hochiki Corp | Flame detection apparatus |
US9863707B2 (en) | 2011-09-29 | 2018-01-09 | Hatch Ltd. | Furnace with refractory bricks that define cooling channels for gaseous media |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919006B1 (en) * | 1968-09-14 | 1974-05-14 | ||
JPS5397905A (en) * | 1977-02-09 | 1978-08-26 | Nippon Steel Corp | Iron sheel type blast furnace |
-
1983
- 1983-06-20 JP JP10918483A patent/JPS602609A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919006B1 (en) * | 1968-09-14 | 1974-05-14 | ||
JPS5397905A (en) * | 1977-02-09 | 1978-08-26 | Nippon Steel Corp | Iron sheel type blast furnace |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61187622A (en) * | 1985-02-15 | 1986-08-21 | Hochiki Corp | Flame detection apparatus |
JPH0438303B2 (en) * | 1985-02-15 | 1992-06-24 | ||
US9863707B2 (en) | 2011-09-29 | 2018-01-09 | Hatch Ltd. | Furnace with refractory bricks that define cooling channels for gaseous media |
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