JPH04173911A - Method for lining molten iron tapping trough cover in blast furnace - Google Patents
Method for lining molten iron tapping trough cover in blast furnaceInfo
- Publication number
- JPH04173911A JPH04173911A JP30029490A JP30029490A JPH04173911A JP H04173911 A JPH04173911 A JP H04173911A JP 30029490 A JP30029490 A JP 30029490A JP 30029490 A JP30029490 A JP 30029490A JP H04173911 A JPH04173911 A JP H04173911A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating layer
- layer
- lining
- alumina
- 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 title abstract description 34
- 229910052742 iron Inorganic materials 0.000 title abstract description 16
- 238000000034 method Methods 0.000 title abstract description 6
- 238000010079 rubber tapping Methods 0.000 title abstract description 3
- 238000010276 construction Methods 0.000 claims description 19
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 4
- 239000000395 magnesium oxide Substances 0.000 abstract description 4
- 239000001488 sodium phosphate Substances 0.000 abstract description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 abstract description 3
- 238000004901 spalling Methods 0.000 abstract description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 150000002505 iron Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- -1 deflocculants Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011396 hydraulic cement Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、高炉出銑樋カバーの内張り施工方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for constructing a lining for a blast furnace tap gutter cover.
［従来の技術］
高炉出銑において樋カバーは、溶銑の保温、溶銑・スラ
グの飛散防止などの役割をもつ。近年、高炉の操業は高
温・高圧の高負荷傾向にあり、これに伴う操業条件の過
酷化によってこの樋カバーの耐用性が大巾に低下してい
る。[Prior Art] In blast furnace tapping, a gutter cover has roles such as keeping hot metal warm and preventing hot metal and slag from scattering. In recent years, the operation of blast furnaces has tended to involve high temperatures, high pressures, and high loads, and the resulting harsher operating conditions have significantly reduced the durability of gutter covers.
そこで、例えば特開平２−７７５１０号公報に見られる
ように、炭化珪素および炭素を配合した樋カバー用耐火
物が提案されている。この材質ハ炭化珪素を多量に配合
することにより、耐食性、耐スポーリング性および軽量
化に効果がある。Therefore, a refractory for gutter covers containing silicon carbide and carbon has been proposed, as seen in, for example, Japanese Patent Application Laid-Open No. 2-77510. By incorporating a large amount of silicon carbide into this material, corrosion resistance, spalling resistance, and weight reduction are effective.
［発明が解決しようとする？！！Ｕ］
しかし、上記従来の樋カバー材質は多量の炭化珪素の存
在によって熱伝導率が高くなり、鉄皮の赤熱が原因で内
張り材質の性能を十分に発揮することなく樋カバーの使
用を中止しなければならなかった。[What does invention try to solve? ! ! U] However, the conventional gutter cover material mentioned above has high thermal conductivity due to the presence of a large amount of silicon carbide, and due to the red heat of the iron skin, the use of the gutter cover has been discontinued without fully demonstrating the performance of the lining material. I had to.
［課題を解決するための手段］
内張りの背面に断熱層を介在させれば鉄皮の赤熱を防止
することができる。しかし、断熱層を介在させると樋カ
バーの施工時間が大巾に延びるために施工性に劣るとい
う問題がある。例えば断熱層を鋳込みで施工しようとす
ると、断熱層の硬化を待って内張り材を施工しなければ
ならず、その待ち時間が相当長い。また、鉄皮には内張
り材を保持するために多数のスタッドが設けられており
、断熱層として断熱レンガや断熱ボードなどを使用した
場合はスタッドを回避して設置しなければならないため
に迅速な施工が困難であった。[Means for solving the problem] By interposing a heat insulating layer on the back side of the lining, it is possible to prevent the iron skin from becoming red hot. However, there is a problem in that when a heat insulating layer is interposed, the construction time of the gutter cover is significantly extended, resulting in poor construction performance. For example, if you try to install a heat insulating layer by casting, you have to wait for the heat insulating layer to harden before applying the lining material, which takes a considerable amount of time. In addition, the steel shell has many studs to hold the lining material, and when using insulation bricks or insulation boards as an insulation layer, it is necessary to avoid the studs and install quickly. Construction was difficult.
本発明は樋カバーの施工において、上記の問題を解決し
たものである。その特徴とするところは、多数のスタッ
ドを設けた鉄皮内側に熱伝導率３．０ｋｃａｌ／ｍ−ｈ
・℃以下の断熱層を吹付けによって形成した後、さらに
その内側に、骨材の４０ｗｔ％以上を炭化珪素で構成す
る内張り層を鋳込みによって形成する高炉出銑樋カバー
の内張り施工方法である。The present invention solves the above problems in constructing gutter covers. Its feature is that the inside of the steel shell with many studs has a thermal conductivity of 3.0 kcal/m-h.
- This is a lining construction method for a blast furnace tap gutter cover in which a heat insulating layer with a temperature below ℃ is formed by spraying, and then a lining layer made of silicon carbide at 40 wt% or more of the aggregate is formed by casting.
吹付けによる断熱層の形成は硬化が早いために、その後
の内張り層の鋳込みを直ちに行なうことができる。断熱
レンガや断熱ボードなどと違って、吹付けではスタット
を回避する手段を取らなくても断熱層を容易に施工でき
る。Since the heat insulating layer is formed by spraying and hardens quickly, the subsequent lining layer can be immediately cast. Unlike insulating bricks or insulation boards, spraying makes it easy to install an insulation layer without having to take measures to avoid studs.
吹付けは多量の施工水分が添加されるから、多孔質組織
となり、優れた断熱効果を有している。また、多孔質組
織のために軽量であり、樋カバー全体を軽量化させる。Since a large amount of construction water is added during spraying, the structure becomes porous and has an excellent heat insulating effect. Additionally, it is lightweight due to its porous structure, reducing the weight of the entire gutter cover.
この軽量化によって樋カバーの搬送作業の能率向上に効
果がある。This weight reduction is effective in improving the efficiency of transporting the gutter cover.
本発明を図面に基づいてさらに詳しく説明する。The present invention will be explained in more detail based on the drawings.
第１図は、樋カバーの長さ方向に対する直角の断面図で
ある。施工はこれを反転し、鉄皮が下になるようにして
行なう。FIG. 1 is a sectional view taken at right angles to the length of the gutter cover. During construction, flip this over so that the iron skin is facing down.
第１図において１は鉄皮、２は鉄皮の内側に多数設けた
スタッド、３は断熱層、４は内張り層である。In FIG. 1, 1 is a steel shell, 2 is a large number of studs provided inside the steel shell, 3 is a heat insulating layer, and 4 is a lining layer.
スタッド２の形状は第１図に示したものに限られるもの
ではない。また、スタッドの材質は強度および経済性の
点で金属が好ましいが、セラミック製でもよい。The shape of the stud 2 is not limited to that shown in FIG. Further, the material of the stud is preferably metal in terms of strength and economical efficiency, but ceramic may also be used.
鉄皮１の内面に対して、まず、吹付けによって断熱層３
を形成する。断熱層３の具体的な材質は特に限定される
ものではなく、例えばアルミナ、高アルミナ、シリカ、
アルミナ−シリカ、マグネシア、スピネル、炭化珪素あ
るいはこれらを主材としたレンガ屑などから選ばれる１
種または２種以上を使用する。これに結合剤として例え
ばりん酸ソーダ、けい酸ソーダ、水硬性セメントなどか
ら選ばれる１種または２種以上を添加する。結合剤の割
合は、例えばりん酸ソーダ、けい酸ソーダなどでは外掛
けで３〜１０ｗｔ％、水硬性セメントでは外掛けで５〜
３０ｗｔ％とする。この他、必要により、ファイバー類
、解こう剤、消石灰、金属粉、気泡剤、軽量骨材、炭素
、窒化物、ガラスなどから選ばれる１種または２種以上
を適量添加してもよい。First, a heat insulating layer 3 is applied to the inner surface of the steel shell 1 by spraying.
form. The specific material of the heat insulating layer 3 is not particularly limited, and includes, for example, alumina, high alumina, silica,
1 selected from alumina-silica, magnesia, spinel, silicon carbide, or brick scraps based on these materials.
Use one species or two or more species. One or more binders selected from, for example, sodium phosphate, sodium silicate, and hydraulic cement are added as a binder. The proportion of the binder is, for example, 3 to 10 wt% in the case of sodium phosphate, sodium silicate, etc., and 5 to 10 wt% in the case of hydraulic cement.
It is set to 30wt%. In addition, if necessary, one or more selected from fibers, deflocculants, slaked lime, metal powder, foaming agents, lightweight aggregates, carbon, nitrides, glass, etc. may be added in appropriate amounts.
断熱層３の吹付けには、施工水分を外掛け１０〜１５ｗ
ｔ％程度添加する。吹付法には施工水分を最初から添加
混合する温式法と、施工水分をノズル内で添加する乾式
法とが知られているが、作業性の面から後者の乾式法が
好ましい。When spraying the insulation layer 3, add 10 to 15 w of construction moisture to the outside.
Add approximately t%. There are two known spraying methods: a hot method in which construction moisture is added and mixed from the beginning, and a dry method in which construction moisture is added within a nozzle.The latter dry method is preferred from the viewpoint of workability.
断熱層３は以上のように吹付によって形成すると同時に
、熱伝導率を３．０ｋｃａｌ／ｍ−ｈ・℃以下にするこ
とが必要である。本発明で使用する内張り層４の材質は
熱伝導率が高いために、断熱層３の熱伝導率が３．０ｋ
ｃａｌ／ｍ−ｈ・℃を超えると鉄皮の赤熱を防止するこ
とができない。The heat insulating layer 3 is formed by spraying as described above, and at the same time, it is necessary to have a thermal conductivity of 3.0 kcal/m-h·°C or less. Since the material of the lining layer 4 used in the present invention has high thermal conductivity, the thermal conductivity of the heat insulating layer 3 is 3.0k.
If the temperature exceeds cal/m-h.degree. C., red heat of the iron skin cannot be prevented.
吹付けは、鋳込みと違って泥しよう状態に調整後、施工
部位に充填されるまでの時間が短いために、硬化時間を
短く設定することができる。したがって硬化が早く、施
工後はその内側に内張り層４を直ちに鋳込むことができ
る。Unlike casting, spraying takes a short time to fill the construction site after adjusting to the muddy state, so it is possible to set a short curing time. Therefore, it hardens quickly, and the lining layer 4 can be immediately cast inside after construction.
断熱層３の厚みは、断熱層３の断熱性、内張り層４の熱
伝導率・耐食性などに合わせて適宜決定する。例えば、
鉄皮１を除く樋カバー全体の厚みの局〜属が好ましい。The thickness of the heat insulating layer 3 is appropriately determined according to the heat insulating properties of the heat insulating layer 3 and the thermal conductivity and corrosion resistance of the lining layer 4. for example,
It is preferable that the thickness of the entire gutter cover excluding the iron skin 1 is in the range of 1 to 3.
鋳込みによって形成する内張り層４は、骨材の４０ｗｔ
％以上、好ましくは４０〜９０ｖｔ％を炭化珪素で構成
する。銑鉄成分のＦｅは酸化によってＦｅＯを生成する
が、炭化珪素のＳｉＣ成分がこのＦｅＯを侵食力の弱い
Ｆｅに還元することで内張り層４の耐食性を向上させる
。これを反応式で示すと下記のとおりである。The lining layer 4 formed by casting is made of 40wt of aggregate.
% or more, preferably 40 to 90 vt%, of silicon carbide. Fe, which is a pig iron component, produces FeO through oxidation, but the SiC component of silicon carbide reduces this FeO to Fe, which has weak corrosive power, thereby improving the corrosion resistance of the lining layer 4. This reaction formula is shown below.
Ｆｅ＋ −０，−ＦｅＯ３ＦｅＯ＋ＳｉＣ−３Ｆｅ＋Ｓ
ｉＯ２＋ＣＯ↑炭化珪素は銑鉄およびスラグの侵入を防
止し、構造的スポーリング防止の効果がある。また、炭
化珪素は粒子内に空隙が多いためにその配合によって樋
カバーの軽量化にも効果がある。Fe+ -0, -FeO3FeO+SiC-3Fe+S
iO2+CO↑Silicon carbide prevents the intrusion of pig iron and slag, and has the effect of preventing structural spalling. Furthermore, since silicon carbide has many voids within its particles, its formulation is effective in reducing the weight of the gutter cover.
炭化珪素以外の骨材は例えばアルミナ、高アルミナ、シ
リカ、アルミナ−シリカ、マグネシア、スピネル、ある
いはこれらを主材としたレンガ屑などから選ばれる１種
または２種以上とする。内張り層４はこれに結合剤とし
て例えばアルミナセメントを外掛けで１〜１０ｗｔ％程
度添加する。結合剤はアルミナセメントだけでなく、例
えばアルミナセメントとりん酸アルミニウムなどを組み
合わせて使用してもよい。また、鋳込み成形用耐火物の
添加物として知られている例えばファイバー類、アルミ
ナゾル、シリカゾル、耐火物超微粉、解こう剤、金属粉
、気泡剤、軽量骨材、炭素、窒化物などから選ばれる１
種または２種以上を適量添加してもよい。施工水分は外
掛けで、例えば５〜１０ｗｔ％とする。The aggregate other than silicon carbide may be one or more selected from, for example, alumina, high alumina, silica, alumina-silica, magnesia, spinel, or brick waste mainly composed of these materials. For the lining layer 4, approximately 1 to 10 wt % of alumina cement, for example, is added as a binder. As the binder, not only alumina cement but also a combination of alumina cement and aluminum phosphate may be used. In addition, additives for cast molding refractories are selected from fibers, alumina sol, silica sol, ultrafine refractory powder, peptizers, metal powders, foaming agents, lightweight aggregates, carbon, nitrides, etc. 1
Appropriate amounts of one or more seeds may be added. The moisture content during construction is external, for example, 5 to 10 wt%.
［実 施 例コ 以下に、本発明の実施例とその比較例を示す。[Example of implementation] Examples of the present invention and comparative examples thereof are shown below.
第１表は断熱層に使用した耐火組成物。第２表は内張り
層に使用した耐火組成物。そして第３表は、各実施例・
比較例の施工方法とその試験結果である。Table 1 shows the fireproof compositions used for the heat insulation layer. Table 2 shows the fireproof compositions used for the lining layer. Table 3 shows each example/
This is the construction method and test results of a comparative example.
実施例１〜５
鉄皮内側に断熱層を吹付は法で形成した後、その上に内
張り層を鋳込みによって形成した。Examples 1 to 5 A heat insulating layer was formed on the inside of the steel shell by a spraying method, and then a lining layer was formed thereon by casting.
比較例１．２ 断熱層を介在させることなく内張り層のみを形成した。Comparative example 1.2 Only the lining layer was formed without intervening a heat insulating layer.
比較例３．４ 断熱層、内張り層ともに鋳込みによって形成した。Comparative example 3.4 Both the heat insulating layer and the lining layer were formed by casting.
第 １ 表 断熱層の組成（ｗｔ９６） とその特性
第 ２ 表 内張り層の組成（ｗｔｋ） とその特性
〈第１．２表における特性試験方法〉
熱 伝 導 率 ： １４５０℃Ｘ３Ｈで加熱後、測
定した。Table 1: Composition of the heat insulating layer (wt96) and its properties Table 2: Composition of the lining layer (wtk) and its properties (Characteristics test method in Table 1.2) Thermal conductivity: Measured after heating at 1450°C for 3 hours did.
耐大ポーリング性 ・ −辺８０闘のサイコロ状に鋳込
んだ試片について、加熱（１４５０℃）−空冷（３０分
）を１０回くり返した後、キレッ発生状況を調べく第３
表における実機試験方法〉
施 工 性 ： 施工所要時間
鉄皮赤熱の有無 ： 肉眼観察によフて判断した。Large poling resistance - After repeating heating (1450℃) and air cooling (30 minutes) 10 times on a test piece cast in the shape of a dice with 80 sides, the third test was conducted to examine the occurrence of sharpness.
Actual test method in the table> Workability: Required construction time Presence or absence of red heat on steel skin: Judged by visual observation.
樋カバーの重量 ： 施工後、鉄皮も含めた総重量を測
定した。Weight of gutter cover: After construction, the total weight including the steel shell was measured.
耐 用 性 ： 何トンの通銑に耐用できたかを測
定した。Durability: Measured how many tons of iron it could withstand.
第３表の結果からも明らかなように、本発明の実施例に
よって得られた樋カバーは鉄皮の赤熱がなく、しかも軽
量、かつ耐用性に優れている。また、施工の所要時間が
短い。As is clear from the results in Table 3, the gutter covers obtained according to the examples of the present invention have no red heat of the iron skin, are lightweight, and have excellent durability. Also, the time required for construction is short.
これに対し比較例２は、断熱層を介在させていないので
実機試験において鉄皮の赤熱が早期に認められ、耐用性
に劣っていた。比較例３は断熱層を鋳込み形成したこと
で、断熱層の硬化が遅く、施工所要時間が長い。比較例
４は断熱層の熱伝導率が高く、赤熱防止の効果が得られ
ない。比較例１は内張り層の炭化珪素の含有量が少なく
、耐用性に劣る。On the other hand, in Comparative Example 2, since no heat insulating layer was interposed, the red heat of the iron skin was observed early in the actual machine test, and the durability was poor. In Comparative Example 3, the heat insulating layer was formed by casting, so the hardening of the heat insulating layer was slow and the construction time was long. In Comparative Example 4, the thermal conductivity of the heat insulating layer is high, and the effect of preventing red heat cannot be obtained. Comparative Example 1 has a low silicon carbide content in the lining layer and is inferior in durability.
［効 果］
本発明は以上のとおり、吹付けによる断熱層の形成と炭
化珪素質の内張り層との組み合わせによって、施工性お
よび耐用性に優れた樋カバーを得ることができる。した
がって、今後ますます使用条件の苛酷化が予想される樋
カバーにおいて、本発明の施工方法はその価値がきわめ
て大きい。[Effects] As described above, according to the present invention, a gutter cover with excellent workability and durability can be obtained by combining the formation of a heat insulating layer by spraying and a silicon carbide lining layer. Therefore, the construction method of the present invention is extremely valuable for gutter covers whose usage conditions are expected to become increasingly severe in the future.
る直角の断面図を示す。
１・・・鉄皮 ２・・・スタッド３・・・
断熱層 ４・・・内張り１他４名
第 １ 図
１、鉄皮
２：スタット
３：断熱層
４：内張り層A right-angle cross-sectional view is shown. 1... Iron skin 2... Stud 3...
Insulation layer 4...Inner lining 1 and 4 other people 1 Figure 1, Iron skin 2: Stat 3: Insulation layer 4: Inner lining layer
Claims (1)
ｋｃａｌ／ｍ・ｈ・℃以下の断熱層を吹付けによって形
成した後、さらにその内側に、骨材の４０ｗｔ％以上を
炭化珪素で構成する内張り層を鋳込みによって形成する
高炉出銑樋カバーの内張り施工方法。1 Thermal conductivity is 3.0 inside the steel shell with many studs.
After forming a heat insulating layer of kcal/m・h・℃ or less by spraying, a lining layer containing 40 wt% or more of the aggregate made of silicon carbide is further formed by casting inside the layer. Construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2300294A JP2510352B2 (en) | 1990-11-06 | 1990-11-06 | Blast furnace tap iron cover covering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2300294A JP2510352B2 (en) | 1990-11-06 | 1990-11-06 | Blast furnace tap iron cover covering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04173911A true JPH04173911A (en) | 1992-06-22 |
| JP2510352B2 JP2510352B2 (en) | 1996-06-26 |
Family
ID=17883057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2300294A Expired - Fee Related JP2510352B2 (en) | 1990-11-06 | 1990-11-06 | Blast furnace tap iron cover covering method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510352B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1003885C2 (en) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Gutter for a hot melt and gutter system. |
| JP2012052211A (en) * | 2010-09-03 | 2012-03-15 | Nippon Steel Corp | Transfer gutter for molten metal |
| CN114685174A (en) * | 2022-04-27 | 2022-07-01 | 长兴明天炉料有限公司 | High-strength light tapping channel and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075899U (en) * | 1983-10-31 | 1985-05-28 | 川崎製鉄株式会社 | Cover for protecting high heat objects |
| JPS61164244U (en) * | 1985-03-30 | 1986-10-11 | ||
| JPH0277510A (en) * | 1988-09-13 | 1990-03-16 | Nippon Steel Corp | Refractory for covering iron tapping trough in blast furnace |
-
1990
- 1990-11-06 JP JP2300294A patent/JP2510352B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075899U (en) * | 1983-10-31 | 1985-05-28 | 川崎製鉄株式会社 | Cover for protecting high heat objects |
| JPS61164244U (en) * | 1985-03-30 | 1986-10-11 | ||
| JPH0277510A (en) * | 1988-09-13 | 1990-03-16 | Nippon Steel Corp | Refractory for covering iron tapping trough in blast furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1003885C2 (en) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Gutter for a hot melt and gutter system. |
| WO1998008982A1 (en) * | 1996-08-27 | 1998-03-05 | Hoogovens Technical Services Europe B.V. | Runner for a hot melt, runner system and method for conveying a hot melt |
| US6090340A (en) * | 1996-08-27 | 2000-07-18 | Hoogovens Technical Services Europe Bv | Runner for a hot melt, runner system and method for conveying a hot melt |
| CN1066200C (en) * | 1996-08-27 | 2001-05-23 | 霍戈文斯技术服务欧洲有限公司 | Runner for hot melt, runner system and method for conveying hot melt |
| JP2012052211A (en) * | 2010-09-03 | 2012-03-15 | Nippon Steel Corp | Transfer gutter for molten metal |
| CN114685174A (en) * | 2022-04-27 | 2022-07-01 | 长兴明天炉料有限公司 | High-strength light tapping channel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2510352B2 (en) | 1996-06-26 |
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