JPH042667A - Lining refractory of molten steel vessel for dead soft steel - Google Patents
Lining refractory of molten steel vessel for dead soft steelInfo
- Publication number
- JPH042667A JPH042667A JP2099814A JP9981490A JPH042667A JP H042667 A JPH042667 A JP H042667A JP 2099814 A JP2099814 A JP 2099814A JP 9981490 A JP9981490 A JP 9981490A JP H042667 A JPH042667 A JP H042667A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- lining refractory
- carbon content
- lining
- steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 3
- 239000010452 phosphate Substances 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、連続鋳造設備におけるタンデイツシュや取鍋
、ＲＨ法に使用する真空槽、あるいは転炉等の溶鋼容器
、特にタンデイツシュの内張として使用される耐火物に
関する。Detailed Description of the Invention (Industrial Application Field) The present invention can be used as a lining for tundishes and ladles in continuous casting equipment, vacuum vessels used in the RH process, or molten steel vessels such as converters, especially as linings for tundishes. Regarding refractories.
（従来の技術）
従来、上述したような内張耐火物は、強度を向上させる
ため、また、嵩比重を低下させるために、１％以上の有
機繊維（紙バルブ）を含んでいた。(Prior Art) Conventionally, the above-mentioned lining refractories have contained 1% or more of organic fibers (paper bulbs) in order to improve strength and reduce bulk specific gravity.
そのため、耐火物の炭素含有率は１．０％ないし１．７
％程度にもおよんでいた。Therefore, the carbon content of refractories is 1.0% to 1.7%.
%.
しかしながら、通常炭素含有率が０．０１％以下である
極低炭素鋼用の溶鋼容器の内張として上述のような従来
の耐火物を吹き付は施工した場合、耐火物中の多くの炭
素成分が溶鋼中にピックアップされ、溶鋼の炭素含有率
に影響を与えていた。However, when conventional refractories such as those mentioned above are applied as linings for molten steel containers for ultra-low carbon steel, which usually have a carbon content of 0.01% or less, many carbon components in the refractories are was picked up in the molten steel and affected the carbon content of the molten steel.
（発明が解決しようとする課題）
そこで本発明は、極低炭素鋼の溶製時に溶鋼の炭素含有
率に影響を与えることが少ない、溶鋼容器の内張耐火物
を提供することを課題とする。(Problems to be Solved by the Invention) Therefore, an object of the present invention is to provide a refractory lining for a molten steel container that has little effect on the carbon content of molten steel during the production of ultra-low carbon steel. .
（課題を解決するための手段）
上記課題を解決すべく、本発明によれば、極低炭素鋼用
の溶鋼容器の内張として使用される耐火物であって、含
まれる繊維成分の主体が無機繊維であり、炭素の含有率
が０．５％以下であることを特徴とする内張耐火物が提
供される。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a refractory used as a lining for a molten steel container for ultra-low carbon steel, in which the main fiber component contained is A refractory lining is provided that is made of inorganic fibers and has a carbon content of 0.5% or less.
（作 用）
本発明の耐火物は、従来のものに比べて炭素含有率が低
く、０．５％以下であるため、極低炭素鋼用の溶鋼容器
の内張として使用した場合、溶鋼中にピックアップされ
る炭素量が比較的少なく、したがって溶鋼の炭素含有率
に与える影響も少ない。従来の耐火物において有機繊維
によって維持されていた強度は、本発明では無機繊維に
よって維持される。(Function) The refractory of the present invention has a lower carbon content than conventional ones, 0.5% or less, so when used as a lining for a molten steel container for ultra-low carbon steel, it The amount of carbon picked up by the steel is relatively small, and therefore the effect on the carbon content of the molten steel is small. The strength maintained by organic fibers in conventional refractories is maintained by inorganic fibers in the present invention.
（実施例）
本発明の耐火物においては、炭素含有率を０゜５％以下
にするために、強度を向上すべ〈従来使用していた有機
繊維（紙パルプ）の代わりに無機繊維（Ａ１２０ｓ−８
ｉ０２−ＣａＯ系）を主体的な繊維成分とした。(Example) In the refractory of the present invention, in order to reduce the carbon content to 0.5% or less, the strength must be improved. 8
i02-CaO system) was used as the main fiber component.
また、従来は有機バインダーを無機バインダーと併用し
ていたが、本発明ではこれを無機バインダーのみとした
。無機バインダーの例としては、第１表に示すように不
純物としてＣを含むリン酸塩の純度を高めるため１種の
リン酸塩を用いる等の方法がある。さらに、従来使用し
ていた炭酸塩を本発明では使用中止とし、耐火物中のＴ
−Ｃ（Ｔｏｔａｌ Ｃａｒｂｏｎ）を０．３０％程度と
した。Furthermore, although an organic binder and an inorganic binder have conventionally been used in combination, in the present invention, only an inorganic binder is used. As an example of the inorganic binder, as shown in Table 1, there is a method of using one type of phosphate to improve the purity of the phosphate containing C as an impurity. Furthermore, the use of conventionally used carbonates is discontinued in the present invention, and T in refractories is
-C (Total Carbon) was about 0.30%.
第１表は、連続鋳造設備のタンデイツシュの内張となる
耐火物の成分等を、従来品と本発明品とで比較した表で
ある。かかる従来品と本発明品とを用いてタンデイツシ
ュ内での炭素ピックアツプ量を比較したところ、従来品
では約６ ｐｐｍ５本発明品では約２ ｐｐｍとなり、
本発明品を用いた場合には炭素ピックアツプ量を約３分
の１に低減できることがわかった（第１図を参照）。Table 1 is a table comparing the components of the refractory material lining the tundish for continuous casting equipment between the conventional product and the product of the present invention. When comparing the amount of carbon picked up in the tundish using the conventional product and the product of the present invention, the amount of carbon picked up in the tundish was approximately 6 ppm for the conventional product, approximately 2 ppm for the product of the present invention, and
It was found that when the product of the present invention was used, the amount of carbon pick-up could be reduced to about one-third (see Figure 1).
実施例の条件を以下に示す。The conditions of the example are shown below.
（１）対象鋼； 自動車用深絞り鋼板
（２）成分；Ｃ≦２０ｐｐｍ、 Ｓ≦０．０５ｗｔ−％
Ｍｎ≦０．１５ｗｔ−％、Ｐ≦０．０１０ｗｔ−％、Ｓ
ｉＳ２．００５ｗｔ−％、ＡＩ≦０．０６０ｗｔ−％、
ＴｉＳ２．０５０ｗｔ−％、Ｎ≦０．００２０ｗｔ−％
（３）吹付条件；
（ａ）吹付方法；
コンプレッサでエアーをノズル部に送
り、エアー圧で吹き付ける乾式吹付法。(1) Target steel; Deep drawn steel plate for automobiles (2) Ingredients: C≦20ppm, S≦0.05wt-%
Mn≦0.15wt-%, P≦0.010wt-%, S
iS2.005wt-%, AI≦0.060wt-%,
TiS2.050wt-%, N≦0.0020wt-%
(3) Spraying conditions; (a) Spraying method; Dry spraying method in which a compressor sends air to the nozzle and sprays with air pressure.
（ｂ）作業条件；
厚 さ 約３０ｍｍ
時 間 ４５分
壁面温度 ８０〜１３０℃
第１表
（効 果）
本発明による耐火物は、炭素含有率が０．５％以下と低
いので、炭素含有率が通常０．０１％以下である極低炭
素鋼の溶製時に溶鋼容器の内張として吹き付は施工して
も、溶鋼中にピックアップされる炭素量が少ないので、
溶鋼の炭素含有率に影響を与えることが少ない。耐火物
の強度は、有機繊維にとってかわり主体的な繊維成分と
なる無機繊維によって十分に維持される。(b) Working conditions: Thickness: Approximately 30 mm Time: 45 minutes Wall temperature: 80 to 130°C Table 1 (Effects) The refractory according to the present invention has a low carbon content of 0.5% or less, so the carbon content is low. Even if spraying is used as a lining for the molten steel container during the melting of ultra-low carbon steel, which usually has a carbon content of 0.01% or less, the amount of carbon picked up in the molten steel is small.
It has little effect on the carbon content of molten steel. The strength of refractories is sufficiently maintained by inorganic fibers, which replace organic fibers and become the main fiber component.
第１図は本発明による耐火物（本発明品）と従来の耐火
物（従来品）とをそれぞれタンデイツシュの内張として
用いたときの溶鋼中への炭素ピックアツプ量を比較する
ため、タンデイツシュの入口側と出口側とでそれぞれ炭
素含有率を測定してまとめたグラフであり、△印が発明
品を示し、Ｏ印が従来品を示す。Figure 1 shows the inlet of the tundish to compare the amount of carbon picked up into molten steel when the refractory according to the present invention (the present invention) and the conventional refractory (the conventional product) are used as the lining of the tundish. This is a graph in which the carbon content was measured and summarized on the side and the outlet side, where △ indicates the invented product and O indicates the conventional product.
Claims (1)
物であって、含まれる繊維成分の主体が無機繊維であり
、炭素の含有率が０．５％以下であることを特徴とする
内張耐火物。A refractory used as a lining for molten steel containers for ultra-low carbon steel, characterized in that the fiber components contained are mainly inorganic fibers and the carbon content is 0.5% or less. Lining refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099814A JP2508880B2 (en) | 1990-04-16 | 1990-04-16 | Refractory lining for molten steel container for ultra low carbon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099814A JP2508880B2 (en) | 1990-04-16 | 1990-04-16 | Refractory lining for molten steel container for ultra low carbon steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH042667A true JPH042667A (en) | 1992-01-07 |
| JP2508880B2 JP2508880B2 (en) | 1996-06-19 |
Family
ID=14257317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2099814A Expired - Lifetime JP2508880B2 (en) | 1990-04-16 | 1990-04-16 | Refractory lining for molten steel container for ultra low carbon steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508880B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183516A (en) * | 2013-04-10 | 2013-07-03 | 济南钢铁集团耐火材料有限责任公司 | Machine pressing carbon-free lining brick for steel ladles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179078A (en) * | 1981-04-24 | 1982-11-04 | Aikoh Co | Refractory sealing material |
| JPH01148757A (en) * | 1987-12-04 | 1989-06-12 | Kawasaki Refract Co Ltd | Patching repairing material |
-
1990
- 1990-04-16 JP JP2099814A patent/JP2508880B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179078A (en) * | 1981-04-24 | 1982-11-04 | Aikoh Co | Refractory sealing material |
| JPH01148757A (en) * | 1987-12-04 | 1989-06-12 | Kawasaki Refract Co Ltd | Patching repairing material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183516A (en) * | 2013-04-10 | 2013-07-03 | 济南钢铁集团耐火材料有限责任公司 | Machine pressing carbon-free lining brick for steel ladles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508880B2 (en) | 1996-06-19 |
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