JP6781813B1 - Coke furnace Carbonization chamber How to suppress overhang of furnace wall - Google Patents

Coke furnace Carbonization chamber How to suppress overhang of furnace wall Download PDF

Info

Publication number
JP6781813B1
JP6781813B1 JP2019184028A JP2019184028A JP6781813B1 JP 6781813 B1 JP6781813 B1 JP 6781813B1 JP 2019184028 A JP2019184028 A JP 2019184028A JP 2019184028 A JP2019184028 A JP 2019184028A JP 6781813 B1 JP6781813 B1 JP 6781813B1
Authority
JP
Japan
Prior art keywords
refractory
carbonization chamber
overhang
coke oven
suppressing
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.)
Active
Application number
JP2019184028A
Other languages
Japanese (ja)
Other versions
JP2021059655A (en
Inventor
本田 和寛
和寛 本田
松延 健一
健一 松延
公大 安部
公大 安部
孝ニ 米本
孝ニ 米本
深澤 康裕
康裕 深澤
小野 賢治
賢治 小野
良太 菱沼
良太 菱沼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Krosaki Harima Corp
Original Assignee
Nippon Steel Corp
Krosaki Harima Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp, Krosaki Harima Corp filed Critical Nippon Steel Corp
Priority to JP2019184028A priority Critical patent/JP6781813B1/en
Application granted granted Critical
Publication of JP6781813B1 publication Critical patent/JP6781813B1/en
Publication of JP2021059655A publication Critical patent/JP2021059655A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

【課題】大きな手間を要することなく、空窯のコークス炉炭化室炉壁の張り出しを抑制することのできる方法を提供する。【解決手段】空窯のコークス炉炭化室炉壁1,1間に棒状の張り出し抑制用耐火物2を一又は複数個固定する際、張り出し抑制用耐火物2の端部に耐火粉末を溶射施工して固定する。【選択図】図1PROBLEM TO BE SOLVED: To provide a method capable of suppressing overhang of a furnace wall of a coke oven carbonization chamber of an empty kiln without requiring a large amount of time and effort. SOLUTION: When one or more rod-shaped refractory for suppressing overhang is fixed between furnace walls 1 and 1 of a coke oven carbonization chamber of an empty kiln, refractory powder is sprayed on the end of the refractory for suppressing overhang. And fix it. [Selection diagram] Fig. 1

Description

本発明は、コークス炉炭化室炉壁の張り出し抑制方法に関する。 The present invention relates to a method for suppressing overhang of a coke oven carbonization chamber wall.

コークス炉は、炉幅方向に、炭化室と、その炭化室に熱を供給する燃焼室とが交互に並んで配置されてなり、炭化室と燃焼室とを隔てる炭化室炉壁を介して、燃焼室から炭化室へ熱の供給が行われる。そして、コークス原料である石炭が炭化室に投入され、加熱されることでコークスに乾留され、その後、炭化室の一方の窯口から押し出される。
コークス炉が老朽化してくると、稼動しない(石炭が炭化室に投入されない)非稼動窯、すなわち空窯が増加する。また、各窯の炭化室炉壁の損傷範囲も拡大して補修日数が増加し、結果として補修開始までの空窯期間が長期化する。
The coke oven is formed by alternately arranging carbonization chambers and combustion chambers that supply heat to the carbonization chambers in the width direction of the furnace, and via a carbonization chamber furnace wall that separates the carbonization chambers and the combustion chambers. Heat is supplied from the combustion chamber to the carbonization chamber. Then, coal, which is a raw material for coke, is put into a carbonization chamber, and by heating, it is carbonized in coke and then extruded from one kiln opening of the carbonization chamber.
As the coke oven ages, the number of non-operating kilns (coal is not put into the carbonization chamber), that is, empty kilns, increases. In addition, the damage range of the carbonization chamber furnace wall of each kiln is expanded and the number of repair days is increased, and as a result, the empty kiln period until the start of repair is prolonged.

ところが、空窯においては図2に概念的に示すように、隣接する窯におけるコークスの押し出しの際に側圧を受けて炉幅が狭小化し、酷い場合は炉壁倒壊に繋がるという問題がある。
このため、長期間の空窯状態が予想されるときは、従来一般的に、空窯の窯口付近に炭化室の天井近くまで煉瓦を積み上げ、空窯の狭小化と炉壁の倒壊を防止するようにしていた。
なお、空窯の狭小化を抑制するために、炉壁煉瓦の非積替え部分を拘束板により拘束する技術も知られている(例えば特許文献1参照)。
However, in an empty kiln, as conceptually shown in FIG. 2, there is a problem that when coke is extruded in an adjacent kiln, the width of the furnace is narrowed due to lateral pressure, which in severe cases leads to the collapse of the furnace wall.
For this reason, when a long-term empty kiln condition is expected, bricks are generally piled up near the ceiling of the carbonization chamber near the kiln opening of the empty kiln to prevent the empty kiln from narrowing and the furnace wall from collapsing. I was trying to do it.
In addition, in order to suppress the narrowing of the empty kiln, a technique of restraining the non-transshipment portion of the furnace wall brick with a restraining plate is also known (see, for example, Patent Document 1).

特開2000−313882号公報Japanese Unexamined Patent Publication No. 2000-313882

しかし、炭化室の天井近くまで煉瓦を積み上げる施工の場合、煉瓦の積み上げ作業に非常に手間を要するという問題がある。また、特許文献1のように空窯の炭化室壁を拘束板により拘束する施工の場合、拘束板の設置作業に非常に手間を要するという問題がある。 However, in the case of the construction of stacking bricks near the ceiling of the carbonization chamber, there is a problem that the brick stacking work requires a great deal of time and effort. Further, in the case of the construction in which the carbonization chamber wall of the empty kiln is restrained by the restraint plate as in Patent Document 1, there is a problem that the installation work of the restraint plate requires a great deal of time and effort.

そこで、本発明が解決しようとする課題は、大きな手間を要することなく、空窯のコークス炉炭化室炉壁の張り出しを抑制することのできる方法を提供することにある。 Therefore, an object to be solved by the present invention is to provide a method capable of suppressing the overhang of the furnace wall of the coke oven carbonization chamber of an empty kiln without requiring a large amount of time and effort.

本発明の一観点によれば、次のコークス炉炭化室炉壁の張り出し抑制方法が提供される。
空窯のコークス炉炭化室炉壁間に棒状の張り出し抑制用耐火物を一又は複数個固定する際、前記張り出し抑制用耐火物の端部に耐火粉末を溶射施工して固定することを特徴とするコークス炉炭化室炉壁の張り出し抑制方法。
According to one aspect of the present invention, the following method for suppressing overhang of the coke oven carbonization chamber wall is provided.
When fixing one or more rod-shaped refractory for suppressing overhang between the walls of the coke oven carbonization chamber of an empty kiln, the feature is that the refractory powder is sprayed onto the end of the refractory for suppressing overhang. A method of suppressing overhang of the furnace wall of the coke oven carbonization chamber.

本発明によれば、溶射施工により張り出し抑制用耐火物を固定するので、従来の煉瓦を積み上げる施工や、特許文献1のように拘束板を設置する施工と比較して、非常に簡単に施工ができる。これにより、大きな手間を要することなく、空窯のコークス炉炭化室炉壁の張り出しを抑制することができる。 According to the present invention, since the refractory for suppressing overhang is fixed by thermal spraying, the construction is very easy as compared with the conventional construction of stacking bricks and the construction of installing a restraint plate as in Patent Document 1. it can. As a result, it is possible to suppress the overhang of the furnace wall of the coke oven carbonization chamber of the empty kiln without requiring a large amount of time and effort.

本発明のコークス炉炭化室炉壁の張り出し抑制方法において、空窯のコークス炉炭化室炉壁間に張り出し抑制用耐火物を固定する際の溶射施工の一実施形態を示す図。FIG. 5 is a diagram showing an embodiment of spraying work when fixing a refractory for suppressing overhang between the walls of a coke oven carbonization chamber of an empty kiln in the method for suppressing overhang of a coke oven carbonization chamber wall of the present invention. 空窯における問題点を示す概念的な横断面図。A conceptual cross-sectional view showing problems in an empty kiln.

本発明のコークス炉炭化室炉壁の張り出し抑制方法(以下、単に「張り出し抑制方法」という。)は、空窯のコークス炉炭化室炉壁間に棒状の張り出し抑制用耐火物を一又は複数個固定することにより、空窯のコークス炉炭化室炉壁の張り出しを抑制するものであり、その際、張り出し抑制用耐火物の端部に耐火粉末を溶射施工して固定することを特徴とするものである。
溶射施工としては、テルミット溶射施工を好適に用いることができる。ここで、テルミット溶射施工とは、耐火原料粉末及び金属粉末を含む耐火粉末(溶射材)を、酸素又は酸素を含有するガスを搬送ガスとして被施工部(本発明では張り出し抑制用耐火物の端部)に吹付け、金属粉末の燃焼発熱を利用して耐火粉末(溶射材)を溶融付着させる溶射施工である。
In the method for suppressing overhang of the coke oven carbonization chamber wall of the present invention (hereinafter, simply referred to as “overhang suppression method”), one or more rod-shaped refractories for suppressing overhang are provided between the walls of the coke oven carbonization chamber of an empty kiln. By fixing, the overhang of the furnace wall of the coke oven carbonization chamber of the empty kiln is suppressed, and at that time, the refractory powder is sprayed onto the end of the refractory for suppressing overhang and fixed. Is.
As the thermal spraying construction, the thermite thermal spraying construction can be preferably used. Here, the termit spraying construction refers to a part to be constructed (in the present invention, the edge of a refractory for suppressing overhang) using a refractory powder (spraying material) containing a refractory raw material powder and a metal powder as a transport gas of oxygen or a gas containing oxygen. This is a thermal spraying operation in which the refractory powder (thermal spray material) is melted and adhered by spraying it onto the part) and utilizing the heat generated by combustion of the metal powder.

図1に、本発明の張り出し抑制方法において、空窯のコークス炉炭化室炉壁間に張り出し抑制用耐火物を固定する際のテルミット溶射施工の一実施形態を示している。 FIG. 1 shows an embodiment of thermite thermal spraying construction when fixing a refractory for suppressing overhang between the walls of a coke oven carbonization chamber of an empty kiln in the overhang suppression method of the present invention.

本実施形態では、コークス炉炭化室炉壁1,1間に棒状の張り出し抑制用耐火物2をテルミット溶射施工により固定する。具体的には、張り出し抑制用耐火物2を治具3の先端に保持し、その治具3の操作により張り出し抑制用耐火物2をコークス炉炭化室炉壁1,1間の所定の位置に配置する。ここで、張り出し抑制用耐火物2の長さは、コークス炉炭化室炉壁1,1間の間隔よりわずかに短いものとする。そうすると、張り出し抑制用耐火物2はコークス炉炭化室炉壁1,1間を架橋するように配置される。
続いて、テルミット溶射用ランス4を用いて、張り出し抑制用耐火物2の両端部にそれぞれ耐火粉末をテルミット溶射施工して、その張り出し抑制用耐火物2をコークス炉炭化室炉壁1,1間に固定する。なお、本実施形態では、張り出し抑制用耐火物2の両端部にそれぞれ耐火粉末をテルミット溶射施工するようにしたが、張り出し抑制用耐火物2の一方の端部にのみ耐火粉末をテルミット溶射施工してもよい。このように張り出し抑制用耐火物2の一方の端部にのみ耐火粉末をテルミット溶射施工することによっても、その張り出し抑制用耐火物2をコークス炉炭化室炉壁1,1間に固定することができる。
In the present embodiment, the rod-shaped refractory material 2 for suppressing overhang is fixed between the furnace walls 1 and 1 of the coke oven carbonization chamber by thermite thermal spraying. Specifically, the refractory material 2 for suppressing overhang is held at the tip of the jig 3, and the refractory material 2 for suppressing overhang is placed at a predetermined position between the furnace walls 1 and 1 of the coke oven carbonization chamber by operating the jig 3. Deploy. Here, the length of the refractory material 2 for suppressing overhang is slightly shorter than the distance between the furnace walls 1 and 1 of the coke oven carbonization chamber. Then, the refractory material 2 for suppressing overhang is arranged so as to bridge between the furnace walls 1 and 1 of the coke oven carbonization chamber.
Subsequently, using the Termit thermal spraying lance 4, refractory powder is sprayed on both ends of the overhang suppression refractory 2, and the overhang refractory 2 is placed between the coke oven carbonization chamber furnace walls 1 and 1. Fix to. In the present embodiment, the refractory powder is sprayed on both ends of the refractory material 2 for suppressing overhang by thermal spraying, but the refractory powder is sprayed on only one end of the refractory material 2 for suppressing overhang. You may. By spraying the refractory powder only on one end of the overhang suppression refractory 2 in this way, the overhang suppression refractory 2 can be fixed between the coke oven carbonization chamber furnace walls 1 and 1. it can.

ここで、溶射施工する張り出し抑制用耐火物2の「端部」とは、溶射施工の施工性を考慮すると、張り出し抑制用耐火物2端部の底面及び手前側の側面の少なくとも一部であるが、これには限定されず、張り出し抑制用耐火物2端部の表面に溶射施工することもできる。 Here, the "end portion" of the refractory material 2 for suppressing overhang to be subjected to thermal spraying is at least a part of the bottom surface and the side surface on the front side of the end portion of the refractory material 2 for suppressing overhang, in consideration of the workability of the thermal spraying work. However, the present invention is not limited to this, and thermal spraying can be applied to the surface of the two ends of the refractory for suppressing overhang.

また、張り出し抑制用耐火物2を固定する位置もコークス炉炭化室炉壁1,1間であれば特に限定されない。ただし、前述した空窯の狭小化や炉壁の倒壊といった問題は、損傷の激しい窯口近傍(例えば窯口から3m以内の領域)において発生しやすいことから、張り出し抑制用耐火物2は窯口近傍のコークス炉炭化室炉壁1,1間に固定することが有効であり、また、コークス炉炭化室炉壁1,1間の高さ方向に沿って所定の間隔(例えば1m程度の間隔)をおいて張り出し抑制用耐火物2を複数個固定することも有効である。 Further, the position where the refractory for suppressing overhang 2 is fixed is not particularly limited as long as it is between the coke oven carbonization chamber furnace walls 1 and 1. However, since the above-mentioned problems such as narrowing of the empty kiln and collapse of the furnace wall are likely to occur in the vicinity of the kiln opening (for example, within 3 m from the kiln opening), the refractory material 2 for suppressing overhang is the kiln opening. It is effective to fix between the coke oven carbonization chamber furnace walls 1 and 1 in the vicinity, and a predetermined interval (for example, an interval of about 1 m) along the height direction between the coke oven carbonization chamber furnace walls 1 and 1. It is also effective to fix a plurality of refractory materials 2 for suppressing overhang.

本実施形態においてテルミット溶射施工用の耐火粉末としては、シリカ質原料、アルミナ質原料及びアルミナ−シリカ質原料から選択される少なくとも一種と、金属粉末とを含有するものを好適に用いることができる。
シリカ質原料としては、珪石粉、珪砂、天然石英粉、溶融シリカ粉、あるいはこれらの成分を主体とした耐火物粉などが挙げられる。
アルミナ質原料としては、電融アルミナ、焼結アルミナ、ボーキサイト、仮焼アルミナなどが挙げられる。
アルミナ−シリカ質原料としては、コージェライト、ムライト、ろう石、シリマナイト、シャモット、粘土、アンダリュサイト、カイヤナイト、焦宝石などが挙げられる。
これらシリカ質原料、アルミナ質原料及びアルミナ−シリカ質原料は、コークス炉炭化室炉壁の材質(シリカ質又はアルミナ−シリカ質)と同系の材質であるため、テルミット溶射施工によりコークス炉炭化室炉壁1,1間に張り出し抑制用耐火物2を良好かつ強固に固定することができる。
なお、テルミット溶射施工用の耐火粉末に用いる金属粉末としてはSi粉末を好適に用いることができるが、Si粉末以外にも、Al粉、Al−Mg合金粉、Mg粉、Fe−Si合金粉、Ca−Si合金粉などの金属粉末を単独又はSi粉末と併用で用いることができる。
In the present embodiment, as the fire-resistant powder for thermite spraying construction, a powder containing at least one selected from a siliceous raw material, an alumina-based raw material and an alumina-silica raw material, and a metal powder can be preferably used.
Examples of the siliceous raw material include silica stone powder, silica sand, natural quartz powder, molten silica powder, and refractory powder mainly containing these components.
Examples of the alumina raw material include fused alumina, sintered alumina, bauxite, and calcined alumina.
Alumina-silica raw materials include cordierite, mullite, pyrophyllite, sillimanite, chamotte, clay, andalucite, cayanite, charcoal gemstone and the like.
Since these siliceous raw materials, alumina-based raw materials, and alumina-silica raw materials are the same materials as the material (silica or alumina-silica) of the corkscrew furnace wall, the coke oven carbonization chamber furnace is subjected to thermit spraying. The refractory material 2 for suppressing overhang can be fixed well and firmly between the walls 1 and 1.
Si powder can be preferably used as the metal powder used for the fireproof powder for thermit spraying, but in addition to Si powder, Al powder, Al-Mg alloy powder, Mg powder, Fe-Si alloy powder, etc. Metal powder such as Ca—Si alloy powder can be used alone or in combination with Si powder.

一方、張り出し抑制用耐火物2としては、Al成分及びSiO成分の少なくとも一方を主成分とするものを好適に用いることができる。言い換えれば、張り出し抑制用耐火物2は、シリカ質、アルミナ質又はアルミナ−シリカ質の耐火物を好適に用いることができる。
ここで、「Al成分及びSiO成分の少なくとも一方を主成分とする」とは、Al成分及びSiO成分の含有率が単独又は合計で50質量%以上であることをいう。
On the other hand, as the refractory material 2 for suppressing overhang, a refractory having at least one of the Al 2 O 3 component and the SiO 2 component as main components can be preferably used. In other words, as the overhang suppression refractory 2, a siliceous, alumina-based or alumina-silica refractory can be preferably used.
Here, "having at least one of the Al 2 O 3 component and the SiO 2 component as the main component" means that the content of the Al 2 O 3 component and the SiO 2 component is 50% by mass or more alone or in total. Say.

以上の本実施形態によれば、溶射施工により張り出し抑制用耐火物を固定するので、従来の煉瓦を積み上げる施工や、特許文献1のように拘束板を設置する施工と比較して、非常に簡単に施工ができる。これにより、大きな手間を要することなく、空窯のコークス炉炭化室炉壁の張り出しを抑制することができる。
また、従来の煉瓦を積み上げる施工と比較して、煉瓦の使用量を大幅に削減することができる。
更に、従来の煉瓦を積み上げる施工では、基本的に作業者が煉瓦を積み上げることから、作業者が作業できる程度にまでコークス炉炭化室を冷却する必要があり、それまでの待ち時間も要していたが、本実施形態によればテルミット溶射用ランス4を用いて施工できることから、コークス炉炭化室を冷却せずに施工が可能となり、その分も含めて施工時間を大幅に削減することができる。また、コークス炉炭化室を冷却しないで済むということは、エネルギー損失の低減の観点からも有効である。
また、本実施形態によれば、溶射施工としてテルミット溶射施工を用いており、これにより、金属粉末の燃焼発熱を利用して耐火原料粉末(シリカ質原料、アルミナ質原料及びアルミナ−シリカ質原料から選択される少なくとも一種)が溶融して接着作用を発揮するので、張り出し抑制用耐火物2をコークス炉炭化室炉壁1,1間に強固に固定することができる。
ただし、本発明の張り出し抑制方法において溶射施工はテルミット溶射施工に限定されるものではなく、例えば火炎溶射施工を用いることもできる。
According to the above embodiment, since the refractory for suppressing overhang is fixed by thermal spraying construction, it is very easy as compared with the conventional construction of stacking bricks and the construction of installing a restraint plate as in Patent Document 1. Can be constructed. As a result, it is possible to suppress the overhang of the furnace wall of the coke oven carbonization chamber of the empty kiln without requiring a large amount of time and effort.
In addition, the amount of bricks used can be significantly reduced as compared with the conventional construction of stacking bricks.
Furthermore, in the conventional construction of stacking bricks, since the worker basically piles up the bricks, it is necessary to cool the coke oven carbonization chamber to the extent that the worker can work, and the waiting time until then is also required. However, according to the present embodiment, since the construction can be performed using the Termit spraying lance 4, the construction can be performed without cooling the coke oven carbonization chamber, and the construction time can be significantly reduced including that amount. .. Further, it is effective from the viewpoint of reducing energy loss that it is not necessary to cool the coke oven carbonization chamber.
Further, according to the present embodiment, the thermit spraying construction is used as the spraying construction, whereby the refractory raw material powder (silica raw material, alumina raw material and alumina-silica raw material) can be used by utilizing the heat generated by combustion of the metal powder. Since at least one selected) melts and exerts an adhesive action, the refractory material 2 for suppressing overhang can be firmly fixed between the furnace walls 1 and 1 of the coke oven carbonization chamber.
However, in the overhang suppression method of the present invention, the thermal spraying work is not limited to the thermite thermal spraying work, and for example, flame thermal spraying work can also be used.

ここで、本発明の張り出し抑制方法は、図2に示したような隣接する窯でのコークスの押し出しの際に受ける側圧による空窯の狭小化や炉壁倒壊の抑制のために好適に適用されるが、これ以外にも、例えば空窯を部分的に補修する際に、補修しない健全部分の狭小化や炉壁倒壊の抑制のために適用することもできる。 Here, the overhang suppression method of the present invention is suitably applied to narrowing the empty kiln and suppressing the collapse of the furnace wall due to the lateral pressure received when coke is extruded in the adjacent kiln as shown in FIG. However, in addition to this, for example, when partially repairing an empty kiln, it can be applied to narrow the healthy part that is not repaired and to suppress the collapse of the furnace wall.

本発明の張り出し抑制方法の実施例として、高さ:約7m、幅;約500mmの空窯の窯口近傍(窯口から約1mの位置)のコークス炉炭化室炉壁間に、高さ方向に沿って約1mの間隔をおいて7個の張り出し抑制用耐火物の両端部を溶射施工により固定する施工を実施し、その施工時間を計測した。
また、比較例として、同じサイズの空窯の窯口近傍(窯口から約1mの位置)に天井近くまで煉瓦を約70段積み上げる施工を実施し、その施工時間を計測した。
As an example of the overhang suppression method of the present invention, in the height direction between the furnace walls of the coke oven carbonization chamber near the kiln opening of an empty kiln (position of about 1 m from the kiln opening) having a height of about 7 m and a width of about 500 mm. At intervals of about 1 m, both ends of the seven refractory materials for suppressing overhang were fixed by spraying, and the construction time was measured.
In addition, as a comparative example, about 70 layers of bricks were piled up near the ceiling near the kiln opening of an empty kiln of the same size (at a position of about 1 m from the kiln opening), and the construction time was measured.

表1に、実施例の施工方法の詳細と、実施例及び比較例の施工時間を示している。 Table 1 shows the details of the construction method of the example and the construction time of the example and the comparative example.

Figure 0006781813
Figure 0006781813

表1に示しているように、従来の煉瓦積み施工である比較例では12hを要したのに対し、溶射施工を用いた実施例1〜3では2〜3hで施工が完了し、施工時間を大幅に削減することができた。 As shown in Table 1, while the comparative example of the conventional brickwork construction required 12 hours, the construction was completed in 2 to 3 hours in Examples 1 to 3 using the thermal spraying construction, and the construction time was reduced. We were able to reduce it significantly.

1 コークス炉炭化室炉壁
2 張り出し抑制用耐火物
3 治具
4 テルミット溶射用ランス
1 Coke furnace Carbonization chamber Furnace wall 2 Refractory for suppressing overhang 3 Jig 4 Thermite thermal spray lance

Claims (4)

空窯のコークス炉炭化室炉壁間に棒状の張り出し抑制用耐火物を一又は複数個固定する際、前記張り出し抑制用耐火物の端部に耐火粉末を溶射施工して固定することを特徴とするコークス炉炭化室炉壁の張り出し抑制方法。 When fixing one or more rod-shaped refractory for suppressing overhang between the walls of the coke oven carbonization chamber of an empty kiln, the feature is that the refractory powder is sprayed onto the end of the refractory for suppressing overhang. A method of suppressing overhang of the furnace wall of the coke oven carbonization chamber. 空窯のコークス炉炭化室炉壁間に棒状の張り出し抑制用耐火物を一又は複数個固定する際、前記張り出し抑制用耐火物の端部に耐火粉末をテルミット溶射施工して固定することを特徴とするコークス炉炭化室炉壁の張り出し抑制方法。 When fixing one or more rod-shaped refractory for suppressing overhang between the walls of the coke oven carbonization chamber of an empty kiln, the refractory powder is sprayed on the end of the refractory for suppressing overhang and fixed. A method of suppressing overhang of the furnace wall of the coke oven carbonization chamber. 前記耐火粉末は、シリカ質原料、アルミナ質原料及びアルミナ−シリカ質原料から選択される少なくとも一種と、金属粉末とを含有する、請求項2に記載のコークス炉炭化室炉壁の張り出し抑制方法。 The method for suppressing overhang of a coke oven carbonization chamber wall according to claim 2, wherein the refractory powder contains at least one selected from a siliceous raw material, an alumina raw material, and an alumina-silica raw material, and a metal powder. 前記張り出し抑制用耐火物は、Al成分及びSiO成分の少なくとも一方を主成分とする、請求項1から3のいずれか一項に記載のコークス炉炭化室炉壁の張り出し抑制方法。 The method for suppressing overhang of a coke oven carbonization chamber wall according to any one of claims 1 to 3, wherein the refractory for suppressing overhang contains at least one of an Al 2 O 3 component and a SiO 2 component as main components.
JP2019184028A 2019-10-04 2019-10-04 Coke furnace Carbonization chamber How to suppress overhang of furnace wall Active JP6781813B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019184028A JP6781813B1 (en) 2019-10-04 2019-10-04 Coke furnace Carbonization chamber How to suppress overhang of furnace wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019184028A JP6781813B1 (en) 2019-10-04 2019-10-04 Coke furnace Carbonization chamber How to suppress overhang of furnace wall

Publications (2)

Publication Number Publication Date
JP6781813B1 true JP6781813B1 (en) 2020-11-04
JP2021059655A JP2021059655A (en) 2021-04-15

Family

ID=73022513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019184028A Active JP6781813B1 (en) 2019-10-04 2019-10-04 Coke furnace Carbonization chamber How to suppress overhang of furnace wall

Country Status (1)

Country Link
JP (1) JP6781813B1 (en)

Also Published As

Publication number Publication date
JP2021059655A (en) 2021-04-15

Similar Documents

Publication Publication Date Title
JP4838619B2 (en) Alumina-silica brick for CDQ
JP5671648B1 (en) Thermal spray material
SE468328B (en) SETTING ON THE REMOVAL OR REMOVAL OF AN ELFABLE CONSTRUCTION AND COMPOSITION INTENDED TO BE USED IN THE PROCEDURE
JP2006219330A (en) Monolithic refractory for spray repairing and repairing method
JP2020147477A (en) Method for producing mullite brick
US20050053892A1 (en) Refractory for furnace and furnace and method for surface treating furnace wall
JP6781813B1 (en) Coke furnace Carbonization chamber How to suppress overhang of furnace wall
US9453679B2 (en) Industrial furnace cover
JP4714662B2 (en) How to use irregular refractories
JP4109663B2 (en) Thermal spraying material for industrial kiln repair
US5961371A (en) Cutting refractory material
CN105906351A (en) A wear resistant castable resisting chemical corrosion
JP6775462B2 (en) Anchor brick
JP2016179482A (en) High-temperature container manufacturing method
JP2021004160A (en) Brick for hot metal ladle, and hot metal ladle lined with the same
JP4441056B2 (en) Refractory block, manufacturing method thereof and molten metal container
JP6098834B2 (en) Amorphous refractories for molten aluminum alloys
JP2007246960A (en) Molten iron trough for blast furnace
CN106839777A (en) High temperature furnace wall protection system
JP4516934B2 (en) Refining vessel repair method
JP3659627B2 (en) Wet spray construction method
JP4361048B2 (en) Lightweight castable refractories for molten aluminum and aluminum alloys
JP2005336001A (en) Thermal spraying material
JP3756500B2 (en) Castable for tundish lining
RU2403520C1 (en) Trolley for tunnel furnace

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200722

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20200722

TRDD Decision of grant or rejection written
A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20200909

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200923

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20201016

R150 Certificate of patent or registration of utility model

Ref document number: 6781813

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250