JPH0791119B2 - Hot repair material - Google Patents
Hot repair materialInfo
- Publication number
- JPH0791119B2 JPH0791119B2 JP2323129A JP32312990A JPH0791119B2 JP H0791119 B2 JPH0791119 B2 JP H0791119B2 JP 2323129 A JP2323129 A JP 2323129A JP 32312990 A JP32312990 A JP 32312990A JP H0791119 B2 JPH0791119 B2 JP H0791119B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- repair material
- clinker
- content
- natural
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims description 5
- 239000010443 kyanite Substances 0.000 claims description 5
- 229910052850 kyanite Inorganic materials 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 239000010459 dolomite Substances 0.000 claims description 4
- 229910000514 dolomite Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000013535 sea water Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920003986 novolac Polymers 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 14
- 239000000395 magnesium oxide Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 239000010680 novolac-type phenolic resin Substances 0.000 description 2
- 241000252185 Cobitidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、製鉄業の各種窯炉に使用する炉壁の熱間補修
材に関する。TECHNICAL FIELD The present invention relates to a hot repair material for a furnace wall used in various kilns in the steel industry.
この種補修材としては、MgO質耐火原料に少量の粉末ピ
ッチ及び金属アルミニウム粉末を混和し、フェノール樹
脂を添加した組成物からなる焼付材が熱間補修材として
用いられているが、使用温度（1400℃前後）における残
存線膨張収縮率が比較的大きいために、施工部周縁から
の剥落現象が多くその改善が望まれている現状である。As this kind of repair material, a baking material made of a composition obtained by mixing a small amount of powder pitch and metallic aluminum powder into a MgO refractory raw material and adding a phenol resin is used as a hot repair material, but the operating temperature ( Since the residual linear expansion / shrinkage rate at around 1400 ° C) is relatively large, there are many phenomena of peeling from the peripheral edge of the construction area, and the improvement is desired.
前述の如き従来の熱間補修材の施工後の剥落現象を改善
するには、使用温度における残存線膨張収縮率を小とす
ることにある。In order to improve the exfoliation phenomenon after the conventional hot repair material is applied as described above, the residual linear expansion / shrinkage rate at the operating temperature is made small.
本発明者らは前記のような従来品の諸欠陥を改善するた
め種々検討かつ実験の結果、熱間補修材の残存線膨張収
縮率を減少させるために、ロー石、カイヤナイト等の膨
張性原料をこの種補修材に添加することにより改善する
ことに成功したものであり、本発明の技術的構成は MgO含有量85重量％以上の天然、海水又は電融MgOクリン
カー、CaO含有量70重量％以下の天然又は合成ドロマイ
トクリンカー、又はAl2O3含有量80重量％以上の天然、
焼結又は電融クリンカーの少なくとも１種からなり、10
mm以下の粒度である耐火原料 45〜86重量％、 ノボラック型フェノール樹脂である熱硬化性樹脂10〜20
重量％、 ピッチ粉末 ２〜５重量％、 金属粉末 １〜５重量％及び ロー石及びカイヤナイトの少なくとも１種１〜25重量％
の組成物からなる窯炉々壁の熱間補修材にある。As a result of various investigations and experiments to improve various defects of the conventional products as described above, the present inventors have found that in order to reduce the residual linear expansion / shrinkage ratio of the hot repair material, the expansion property of lozenge, kyanite, etc. It has succeeded in improving by adding raw materials to this kind of repair material, the technical constitution of the present invention is MgO content 85 wt% or more natural, seawater or electro-melting MgO clinker, CaO content 70 wt% % Or less natural or synthetic dolomite clinker, or Al 2 O 3 content 80% by weight or more natural,
Consisting of at least one of sintered or electrofused clinker, 10
45 to 86% by weight of refractory raw material with a particle size of mm or less, thermosetting resin which is a novolac type phenolic resin 10 to 20
% By weight, pitch powder 2-5% by weight, metal powder 1-5% by weight, and at least one kind of loastone and kyanite 1-25% by weight
It is a hot repair material for kiln furnace walls made of the composition of
本発明において前記耐火原料とは、MgO含有量85重量％
以上の天然、海水又は電融MgOクリンカー、CaO含有量70
重量％以下の天然又は合成ドロマイトクリンカー、又は
Al2O3含有量80重量％以上の天然、焼結又は電融クリン
カーの少なくとも１種であり、該耐火原料の粒度は10mm
以下とする。In the present invention, the refractory raw material has a MgO content of 85% by weight.
Above natural, seawater or fused MgO clinker, CaO content 70
Up to 10% by weight of natural or synthetic dolomite clinker, or
Al 2 O 3 content is at least 80% by weight of at least one of natural, sintered or electromelting clinker, and the particle size of the refractory raw material is 10 mm
Below.
前記熱硬化性樹脂はノボラック型フェノール樹脂であ
り、その含有量が10重量％未満では補修しようとする高
温下の炉内に投入、施工した場合、本発明組成物の流動
性が不良であって、炉壁損傷部に流入、密着しない欠点
があり、その含有量が20重量％を超えると該樹脂に含ま
れる溶剤の揮発に時間を要し（発煙時間が長い）、しか
も経済的でない。The thermosetting resin is a novolac type phenolic resin, and if the content thereof is less than 10% by weight, the composition of the present invention has poor fluidity when placed in a furnace under high temperature to be repaired and constructed. However, it has a drawback that it does not flow into and adhere to the damaged portion of the furnace wall, and if its content exceeds 20% by weight, it takes time for the solvent contained in the resin to volatilize (long fuming time), and it is not economical.
10〜20重量％の範囲内で用いると高温化の炉内で液体化
し、本発明熱間補修材が炉壁損傷部に流入、密着する。When it is used within the range of 10 to 20% by weight, it is liquefied in a high temperature furnace and the hot repair material of the present invention flows into and adheres to the damaged portion of the furnace wall.
ピッチ粉末は補修しようとする損傷部への本発明補修材
の接着性を良くするために添加するものであるが、２重
量％未満では接着効果が少なく、５重量％を超えて添加
すると施工時に発煙が多く、補修部分の硬化に時間を要
する。Pitch powder is added to improve the adhesion of the repair material of the present invention to the damaged portion to be repaired, but if it is less than 2% by weight, the adhesive effect is small, and if it is added in excess of 5% by weight at the time of construction. A lot of smoke is emitted and it takes time to cure the repaired part.
金属粉末は補修部分の熱間強度を大とするために添加
し、Al,Si,Mgの少なくとも１種の金属粉末か、またはこ
れら金属を含有する合金粉末を用いる。その含有量が１
重量％未満では、所望の熱間強度が得られず、５重量％
を超えても熱間強度は左程向上せず、コスト高を招来す
るだけである。The metal powder is added to increase the hot strength of the repaired portion, and at least one metal powder of Al, Si and Mg or an alloy powder containing these metals is used. Its content is 1
If it is less than 5% by weight, the desired hot strength cannot be obtained.
Even if it exceeds the above, the hot strength does not improve to the left and only the cost increases.
前述の如く、ロー石又は及びカイヤナイトは残存線膨張
収縮率を減少させるために添加するものであるが、その
添加量が１重量％未満では所期の収縮を抑えることがで
きず、25重量％を超えると補修部分の耐食性が劣化し好
ましくない。As mentioned above, loach and / or kyanite are added to reduce the residual linear expansion / shrinkage rate, but if the addition amount is less than 1% by weight, the desired shrinkage cannot be suppressed and 25% by weight. If it exceeds%, the corrosion resistance of the repaired portion is deteriorated, which is not preferable.
実施例 上記実施例は耐火原料として海水マグネシアについて説
明したが、他のMgO系クリンカー、ドロマイトクリンカ
ーまたはAl2O3系クリンカーの少なくとも１種を用いて
も、ほゞ同等の結果が得られた。Example Although seawater magnesia was described as the refractory raw material in the above-mentioned examples, almost the same results were obtained by using at least one other MgO-based clinker, dolomite clinker or Al 2 O 3 clinker.
また、金属粉末としてSi,Mg又はAl,Si,Mgを含有する合
金粉末を用いても、ほゞ同様の結果が得られた。Further, almost the same result was obtained even when an alloy powder containing Si, Mg or Al, Si, Mg was used as the metal powder.
（１）溶銑予備処理等の低温炉の炉壁補修材として特に
有効である。(1) It is particularly effective as a furnace wall repair material for low-temperature furnaces such as hot metal pretreatment.
（２）製鋼炉の如き高温炉においても、ロー石及びカイ
ヤナイトの添加量を調整することに適用しうることが認
められる。(2) It is recognized that it can be applied to adjusting the addition amounts of loachite and kyanite even in a high temperature furnace such as a steelmaking furnace.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小南 孝教 兵庫県加古川市別府町別府720―５ (56)参考文献 特開 昭54−21410（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takanori Konan 720-5 Beppu, Beppu Town, Kakogawa City, Hyogo Prefecture (56) Reference JP-A-54-21410 (JP, A)
Claims (2)
電融MgOクリンカー、CaO含有量70重量％以下の天然又は
合成ドロマイトクリンカー、又はAl2O3含有量80重量％
以上の天然、焼結又は電融クリンカーの少なくとも１種
からなり、10mm以下の粒度である耐火原料 45〜86重量
％、 ノボラック型フェノール樹脂である熱硬化性樹脂10〜20
重量％、 ピッチ粉末 ２〜５重量％、 金属粉末 １〜５重量％及び ロー石及びカイヤナイトの少なくとも１種１〜25重量％ の組成物からなる窯炉々壁の熱間補修材。1. A natural, seawater or electrofused MgO clinker having an MgO content of 85% by weight or more, a natural or synthetic dolomite clinker having a CaO content of 70% by weight or less, or an Al 2 O 3 content of 80% by weight.
45 to 86% by weight of refractory raw material having a particle size of 10 mm or less, and thermosetting resin 10 to 20 which is a novolac type phenol resin, which is made of at least one of the above natural, sintered or electromelting clinker
A hot repair material for a kiln furnace wall, which comprises a composition of 1 wt%, 2 to 5 wt% of pitch powder, 1 to 5 wt% of metal powder, and 1 to 25 wt% of at least one kind of rock stone and kyanite.
種、またはこれら金属を含有する合金である請求項１記
載の窯炉々壁の熱間補修材。2. The metal powder is at least 1 of Al, Si and Mg.
The hot repair material for kiln furnace walls according to claim 1, which is a seed or an alloy containing these metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2323129A JPH0791119B2 (en) | 1990-11-28 | 1990-11-28 | Hot repair material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2323129A JPH0791119B2 (en) | 1990-11-28 | 1990-11-28 | Hot repair material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04198063A JPH04198063A (en) | 1992-07-17 |
| JPH0791119B2 true JPH0791119B2 (en) | 1995-10-04 |
Family
ID=18151413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2323129A Expired - Lifetime JPH0791119B2 (en) | 1990-11-28 | 1990-11-28 | Hot repair material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791119B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101486792B1 (en) * | 2013-02-19 | 2015-01-29 | (주)포스코켐텍 | Basic hot reparing material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4865636B2 (en) * | 2007-05-18 | 2012-02-01 | 品川リフラクトリーズ株式会社 | Baking repair material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421410A (en) * | 1977-07-19 | 1979-02-17 | Nippon Steel Corp | Mud for closing tap hole of blast furnace |
-
1990
- 1990-11-28 JP JP2323129A patent/JPH0791119B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101486792B1 (en) * | 2013-02-19 | 2015-01-29 | (주)포스코켐텍 | Basic hot reparing material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04198063A (en) | 1992-07-17 |
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