JPS637419Y2 - - Google Patents
Info
- Publication number
- JPS637419Y2 JPS637419Y2 JP1983119082U JP11908283U JPS637419Y2 JP S637419 Y2 JPS637419 Y2 JP S637419Y2 JP 1983119082 U JP1983119082 U JP 1983119082U JP 11908283 U JP11908283 U JP 11908283U JP S637419 Y2 JPS637419 Y2 JP S637419Y2
- Authority
- JP
- Japan
- Prior art keywords
- brick
- carbon
- bricks
- ladle
- lining
- 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
Links
- 239000011449 brick Substances 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000012790 confirmation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910052845 zircon Inorganic materials 0.000 description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 7
- 239000011819 refractory material Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011822 basic refractory Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
〔産業上の利用分野〕
本考案は取鍋ライニング用れんがの残存の程度
を確認するためのれんがの構造に関する。
〔従来技術〕
近年取鍋用耐火物の使用条件は連続鋳造比率の
増加および特殊精錬処理などにより過酷化の一途
をたどつており、ライニングの溶損判定について
は、従来に増して的確さが要求されている。しか
し現在のところ定常修理時における冷間の状態で
の目視観察による残存確認が主であり、連続操業
時における熱間での目視観察では溶損による残存
確認は不可能に近い。
通常、取鍋用ライニングには、第1表に示すよ
うなろう石質、ジルコン質、セルジルコン質、高
アルミナ質、それに、マグネシア質、マグクロ
質、クロマグ質のような塩基性耐火物が用いられ
ており、これらを適宜組合せて、輝度の差による
溶損の判定を行つている。
しかしながら、これらのれんがの熱伝導率は、
第1表に示すように、1.0〜3.0Kcal/m,hr,℃
(1400℃以下)であり、接触反応による異常溶損
を別にすると、どの組合せを行つても輝度の差に
よる溶損判定れんがの露出を的確に判断すること
は非常に難しい。また、これられんがの稼動面側
にスラグや地金が付着することによつて、さら
に、判断を難しくしている。
〔考案の目的〕
本考案の目的は、溶損判定用れんがの熱伝導率
が高く、しかもスラグや地金が付着し難く、これ
によつて、ライニングれんがの溶損を明確に判定
することができる溶損判定用れんがを提供するこ
とにある。
〔考案の構成〕
本考案の取鍋ライニング残存確認れんがは、熱
伝導率が1〜3Kcal/m,hr,℃のれんがの片面
の少なくとも一部に、輝度の比較を明確にするた
め熱伝導率が5〜30Kcal/m,hr,℃のカーボ
ン含有耐火物を一体に成形して埋め込んでなるも
の、あるいはモルタル等を介して成形後貼り合せ
たものである。
カーボン含有量は、5〜40重量%であることが
必要で、5重量%以下では輝度の比較が難しく、
40重量%以上ではれんが背面部の酸化とれんが成
形上、更には、コスト面で好ましくない。
次に本考案を実施例につき詳細に説明する。
〔実施例〕
第1表に示す取鍋用ライニングれんがに用いる
耐火物の中のジルコン質耐火物に、カーボン含有
耐火物を組合せて本考案に係る取鍋ライニング残
存確認れんがを作成した。第1図〜第4図は、そ
のれんがの構造の例を示すもので、ジルコン質れ
んが1の片面に、第2表の各実施例に示すカーボ
ン含有耐火物2を一体に成形してなるものであ
る。
第2表は、使用したカーボン含有耐火物の配合
物組成と、同配合物の硬化後の物体とを示す。同
表において、回転侵食テストは、1650℃で溶鋼中
で行つたもので、ジルコン質耐火物の被食率を20
%とし、指数100とした場合の各炭素含有耐火物
の被食率指数を示すものである。これらのライニ
ング残存確認れんがをカーボン含有耐火物2の面
を裏側にして185t取鍋に3段、4個所に配列させ
取鍋に使用したところ、70チヤージ目に実施例1
のカーボン含有耐火物が表われ地金付着もなく、
ジルコン質れんが1との輝度の相違が明らかに確
認できた。それ以後10〜20チヤージ使用したの
ち、解体を実施した。
[Industrial Application Field] The present invention relates to the structure of bricks for checking the extent of remaining bricks for ladle lining. [Prior art] In recent years, the conditions for using refractories for ladle have become increasingly severe due to the increase in continuous casting ratio and special refining treatment, etc., and the evaluation of lining corrosion damage has become more accurate than before. requested. However, at present, the main method is to visually observe the residual material in cold conditions during routine repairs, and it is nearly impossible to confirm the residual state due to melting damage through visual observation in the hot state during continuous operation. Normally, ladle linings are made of waxite, zircon, cell zircon, high alumina, as shown in Table 1, and basic refractories such as magnesia, maguro, and chromamag. These are appropriately combined to determine melting loss based on the difference in brightness. However, the thermal conductivity of these bricks is
As shown in Table 1, 1.0-3.0Kcal/m, hr, °C
(below 1400°C), and apart from abnormal melting due to contact reactions, it is extremely difficult to accurately judge the exposure of bricks for melting due to differences in brightness, no matter which combination is used. In addition, slag and base metal adhere to the working surface of these bricks, making it even more difficult to judge. [Purpose of the invention] The purpose of the invention is to provide bricks for use in determining melt damage that have high thermal conductivity and are difficult to attract slag or base metal, thereby making it possible to clearly determine melt damage of lining bricks. The purpose of the present invention is to provide a brick for use in determining corrosion damage. [Structure of the invention] The ladle lining remaining confirmation brick of the present invention has a thermal conductivity of 1 to 3 Kcal/m, hr, °C on at least a part of one side of the brick, in order to clearly compare the brightness. It is made by integrally molding and embedding a carbon-containing refractory material having a temperature of 5 to 30 Kcal/m, hr, °C, or it is pasted together after molding using mortar or the like. The carbon content must be between 5 and 40% by weight, and if it is less than 5% by weight, it is difficult to compare the brightness.
If it exceeds 40% by weight, it is unfavorable in terms of oxidation of the back side of the brick, molding of the brick, and cost. Next, the present invention will be explained in detail with reference to examples. [Example] A ladle lining residual confirmation brick according to the present invention was created by combining a carbon-containing refractory with a zircon refractory among the refractories used for ladle lining bricks shown in Table 1. Figures 1 to 4 show examples of the structure of the brick, in which a carbon-containing refractory 2 shown in each example in Table 2 is integrally molded on one side of a zircon brick 1. It is. Table 2 shows the formulation composition of the carbon-containing refractories used and the objects after curing of the same formulation. In the same table, the rotary erosion test was conducted in molten steel at 1650℃, and the corrosion rate of the zircon refractory was 20%.
% and indicates the corrosion rate index of each carbon-containing refractory when the index is 100. When these lining residual confirmation bricks were arranged in 3 tiers in 4 places in a 185t ladle with the carbon-containing refractory 2 side facing back and used in the ladle, Example 1 was obtained at the 70th charge.
The carbon-containing refractories are visible and there is no base metal adhesion.
The difference in brightness from zircon brick 1 was clearly confirmed. After that, it was dismantled after using 10 to 20 charges.
【表】【table】
【表】【table】
【表】【table】
【表】【table】
本考案によれば熱間においてライニング用れん
がの残存確認が可能となり、取鍋操業の安全率を
大幅に向上させ得るという利点がある。
According to the present invention, it is possible to confirm the presence of lining bricks in hot conditions, and there is an advantage that the safety factor of ladle operation can be greatly improved.
第1図は本考案れんがの斜視図、第2図は同じ
く側面図、第3図、第4図は他の1例側面図であ
る。
1……ジルコン質れんが、2……カーボン含有
耐火物。
FIG. 1 is a perspective view of the brick of the present invention, FIG. 2 is a side view of the same, and FIGS. 3 and 4 are side views of another example. 1... Zircon brick, 2... Carbon-containing refractory.
Claims (1)
1〜3Kcal/m,hr,℃のれんが材の片面の少な
くとも一部に5〜40重量%のカーボンを添加した
熱伝導率が5〜30Kcal/m,hr,℃のカーボン
含有耐火物を一体にして成ることを特徴とする取
鍋ライニング残存確認れんが。 Bricks for ladle lining have a thermal conductivity of 1 to 3 Kcal/m, hr, and a brick material with a thermal conductivity of 5 to 30 Kcal/m, 5 to 40% by weight of carbon added to at least a part of one side of the brick material. A ladle lining residual confirmation brick characterized by being integrally made of a carbon-containing refractory of hr, °C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11908283U JPS6028956U (en) | 1983-07-29 | 1983-07-29 | Ladle lining remaining confirmation brick |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11908283U JPS6028956U (en) | 1983-07-29 | 1983-07-29 | Ladle lining remaining confirmation brick |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6028956U JPS6028956U (en) | 1985-02-27 |
JPS637419Y2 true JPS637419Y2 (en) | 1988-03-02 |
Family
ID=30273444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11908283U Granted JPS6028956U (en) | 1983-07-29 | 1983-07-29 | Ladle lining remaining confirmation brick |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6028956U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7006759B1 (en) | 2020-11-25 | 2022-01-24 | Jfeスチール株式会社 | Press molding method |
JP6966729B1 (en) | 2020-11-25 | 2021-11-17 | Jfeスチール株式会社 | Press molded product |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54128415A (en) * | 1978-03-29 | 1979-10-05 | Sumitomo Metal Ind Ltd | Direct reduction furnace |
-
1983
- 1983-07-29 JP JP11908283U patent/JPS6028956U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54128415A (en) * | 1978-03-29 | 1979-10-05 | Sumitomo Metal Ind Ltd | Direct reduction furnace |
Also Published As
Publication number | Publication date |
---|---|
JPS6028956U (en) | 1985-02-27 |
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