JPH03223174A - Amorphous refractory containing cao - Google Patents
Amorphous refractory containing caoInfo
- Publication number
- JPH03223174A JPH03223174A JP2016883A JP1688390A JPH03223174A JP H03223174 A JPH03223174 A JP H03223174A JP 2016883 A JP2016883 A JP 2016883A JP 1688390 A JP1688390 A JP 1688390A JP H03223174 A JPH03223174 A JP H03223174A
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- silicone resin
- cao
- resin
- weight
- 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.)
- Pending
Links
- 229920002050 silicone resin Polymers 0.000 claims abstract description 19
- 239000011819 refractory material Substances 0.000 claims abstract description 9
- 239000011823 monolithic refractory Substances 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000000292 calcium oxide Substances 0.000 abstract description 12
- 235000012255 calcium oxide Nutrition 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 239000000395 magnesium oxide Substances 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 239000011230 binding agent Substances 0.000 description 11
- 238000005266 casting Methods 0.000 description 6
- 239000005011 phenolic resin Substances 0.000 description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 4
- 239000011822 basic refractory Substances 0.000 description 4
- 229920001568 phenolic resin Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- -1 magcalcia 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
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008096 xylene 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〉
この発明は溶鋼鋳造容器である溶鋼鍋、タンデイツシュ
などに用いられるＣａＯ含有不定形耐火物に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a CaO-containing monolithic refractory used in molten steel ladle, tundish, etc., which are molten steel casting containers.
〈従来の技術〉
溶鋼鍋の内張り材やタンデイツシュの内張り、ボード、
コーテイング材などの溶鋼鋳造用容器用不定形耐火物と
してはマグネシア、ドロマイト、カルシアなどの塩基性
耐火材料が用いられている。これらの塩基性耐火材料中
に存在する遊離のＣａＯはスレーキング現象を起こし耐
火物が崩壊することが知られているが、このスレーキン
グ現象を防止することは非常に困難である。<Conventional technology> Lining materials for molten steel pots, linings for tundish dishes, boards,
Basic refractory materials such as magnesia, dolomite, and calcia are used as monolithic refractories for containers for casting molten steel, such as coating materials. It is known that free CaO present in these basic refractory materials causes a slaking phenomenon and causes the refractory to collapse, but it is very difficult to prevent this slaking phenomenon.
従って、不定形耐火物としてＣａＯを含有する耐火材料
を使用する場合には水や水系バインダーは使用できず、
非水系バインダーを用いて行なわれている。この非水系
バインダーとしてはフェノール樹脂（例えば特開昭５９
−１９０２５５号公報など）やウレタン樹脂（例えば特
開昭６２−１１９１５４号公報など）が一般に用いられ
ている。Therefore, when using a refractory material containing CaO as an amorphous refractory, water or a water-based binder cannot be used.
This is done using a non-aqueous binder. As this non-aqueous binder, phenolic resin (for example, JP-A-59
-190255, etc.) and urethane resins (for example, JP-A-62-119154, etc.) are generally used.
〈発明が解決しようとする課題〉
しかし、溶鋼鍋やタンデイツシュなどの鋳造用容器に塩
基性耐火材料を不定形耐火物として使用する場合、バイ
ンダーにフェノール樹脂を用いると炭素結合を生じるた
め、その残成分が鋼中へ溶出し鋼を汚染するという問題
がある。この問題のためフェノール樹脂は溶鋼鍋やタン
デイツシュなどの鋳造容器用耐火物のバインダーとして
は使用できない。<Problems to be Solved by the Invention> However, when basic refractory materials are used as monolithic refractories in casting containers such as molten steel pots and tundishes, carbon bonds occur when phenolic resin is used as a binder. There is a problem that the components elute into the steel and contaminate the steel. Because of this problem, phenolic resin cannot be used as a binder for refractories for cast containers such as molten steel pots and tundishes.
一方、ウレタン樹脂は残炭のないバインダーとして知ら
れているが、ウレタン樹脂は加熱によるバインダー飛散
後の組織強度が低下することと、ウレタンの分解の際に
有害ガスが発生し、作業環境上の問題があるという欠点
を持っている。また、ウレタン樹脂は大気中の水分を吸
って次第に硬化するので作業時間が制限されるという問
題もある。On the other hand, urethane resin is known as a binder with no residual carbon, but urethane resin has a tendency to reduce the structural strength after the binder scatters due to heating, and generates harmful gases when urethane decomposes, resulting in poor work environment. It has the disadvantage of having problems. Another problem is that urethane resin absorbs moisture from the atmosphere and gradually hardens, which limits the working time.
〈課題を解決するための手段〉
本発明者らは溶鋼鍋やタンデイツシュなどの鋳造用容器
に塩基性耐火材料を不定形耐火物として使用する場合の
バインダーについて種々検討の結果、シリコン樹脂を使
用することにより、施工体の強度が保持され、しかも残
炭がほとんどなく鋼の清浄化に対する問題を解決し、ま
た有害ガスの発生のない施工体を得ることに成功し本発
明を完成させたものである。<Means for Solving the Problems> The present inventors have conducted various studies on binders when basic refractory materials are used as monolithic refractories in casting containers such as molten steel pots and tundishes, and as a result, they have decided to use silicone resin. As a result, the strength of the construction body is maintained, and there is almost no residual carbon, which solves the problem of cleaning the steel, and the present invention has been completed by successfully obtaining a construction body that does not generate harmful gases. be.
即ち、この発明はＣａＯ含有耐火材料１００重量部に対
してシリコン樹脂０．５〜１５重量部を含有することを
特徴とするＣａＯ含有不定形耐火物を提供するものであ
る。That is, the present invention provides a CaO-containing monolithic refractory characterized by containing 0.5 to 15 parts by weight of silicone resin per 100 parts by weight of CaO-containing refractory material.
〈発明の構成および作用〉
この発明に用いられるＣａＯ含有耐火材料とじてはカル
シア、マグカルシア、ドロマイト、マグドロなどであり
、これらの単味あるいは混合物、さらにマグネシア質原
料やその他既知の耐火材料との併用が可能である。<Structure and operation of the invention> The CaO-containing refractory materials used in this invention include calcia, magcalcia, dolomite, magdro, etc., and these can be used alone or in combination with magnesia raw materials or other known refractory materials. is possible.
シリコン樹脂としては各種のシリコン樹脂が使用可能で
ある。このシリコン樹脂は施工後加熱されると、分解し
て有機成分は飛散し、Ｓｉ成分は活性なＳｉＯ□となる
。この反応性の高いＳｉＯ□は耐火材料の組織強度の向
上に効果がある。Various silicone resins can be used as the silicone resin. When this silicone resin is heated after application, it decomposes, the organic component is scattered, and the Si component becomes active SiO□. This highly reactive SiO□ is effective in improving the structural strength of refractory materials.
シリコン樹脂として液状のシリコン樹脂は通常キシレン
などを溶媒として使用しており、乾燥時に溶媒が飛散し
て作業環境への悪影響の恐れがあるので粉末のものがよ
り好ましい。また、残炭がある程度許されるならば、シ
リコン樹脂とフェノール樹脂などとの併用も可能である
。シリコン樹脂の使用量は耐火材料１００重量部に対し
て０．５〜１５重量部であり、０．５重量部以下では結
合強度が不十分であり、１５重量部以上では耐食性が低
下する原因となりいずれも好ましくない。Liquid silicone resins usually use xylene or the like as a solvent, and since the solvent may scatter during drying and have an adverse effect on the working environment, powdered silicone resins are more preferable. Further, if a certain amount of residual carbon is allowed, a combination of silicone resin and phenol resin is also possible. The amount of silicone resin used is 0.5 to 15 parts by weight per 100 parts by weight of the fireproof material; if it is less than 0.5 parts by weight, the bonding strength will be insufficient, and if it is more than 15 parts by weight, it will cause a decrease in corrosion resistance. Neither is preferable.
尚、粉末シリコン樹脂を使用する場合には、その使用量
を０．５〜８重量部とすることがより好ましい。In addition, when using powdered silicone resin, it is more preferable that the amount used is 0.5 to 8 parts by weight.
施工体の強度補強の目的でシリコン樹脂と共に無機結合
剤として粘度、ガラス、珪酸塩、塩化物などの無機塩を
添加することもできる。無機結合剤を添加する場合は耐
火材料１００重量部に対して５重量部以下とすることが
望ましい。For the purpose of reinforcing the strength of the construction body, an inorganic salt such as viscosity, glass, silicate, or chloride may be added as an inorganic binder together with the silicone resin. When adding an inorganic binder, it is desirable to add 5 parts by weight or less to 100 parts by weight of the fireproof material.
この発明のＣａＯ含有不定形耐火物は流込み材、スタン
プ材、モルタル、焼付材、乾式吹付材などにいずれも非
水系として使用可能であり、施工に際してはそれぞれ既
知の方法で行なうことができる。The CaO-containing monolithic refractory of the present invention can be used as a non-aqueous material for casting materials, stamping materials, mortar, baking materials, dry spraying materials, etc., and can be applied by known methods.
〈実施例〉 以下、実施例によりこの発明を説明する。<Example> The present invention will be explained below with reference to Examples.
第１表に示す配合により施工した。Construction was carried out using the formulations shown in Table 1.
実施例１．２および比較例１は乾式振動成形、実施例３
および比較例２は乾式スタンプ、実施例４は流込み施工
の例である。Example 1.2 and Comparative Example 1 are dry vibration molding, Example 3
Comparative Example 2 is an example of dry stamping, and Example 4 is an example of pouring construction.
施工体の２００℃および１０００℃で熱処理した後の物
性および１０００℃熱処理後の残炭量も同じく第１表に
示した。The physical properties of the constructed body after heat treatment at 200°C and 1000°C and the amount of residual carbon after heat treatment at 1000°C are also shown in Table 1.
第
表
〈発明の効果〉
以上説明したように、シリコン樹脂を使用したものはい
ずれも２００℃熱処理後の強度においてはフェノール樹
脂やウレタン樹脂を使用した比較例に及ばないが、１０
００℃の熱処理後においてはフェノール樹脂やウレタン
樹脂の使用では樹脂の分解により強度はほとんどな（な
るが、この発明のシリコン樹脂を使用した場合には低温
での強度が高温になっても殆んど低下せずに保たれてい
ることが分かる。これはシリコン樹脂の効果とシリコン
樹脂が分解して生成する活性な５ｉＯｚの効果によるも
のであり、さらに、無機結合剤を併用すれば（実施例２
）−層効果のあることがわかる。Table <Effects of the Invention> As explained above, all products using silicone resin are not as strong as the comparative examples using phenol resin or urethane resin in terms of strength after heat treatment at 200°C.
After heat treatment at 00°C, when using phenolic resin or urethane resin, the strength is almost negligible due to decomposition of the resin (However, when using the silicone resin of this invention, the strength at low temperature is almost unchanged even at high temperature). This is due to the effect of the silicone resin and the effect of active 5iOz produced by decomposition of the silicone resin.Furthermore, if an inorganic binder is used in combination (Example 2
) - It can be seen that there is a layer effect.
又、シリコン樹脂を使用すると残炭はほとんどな（なり
、この発明の不定形耐火物をタンデイツシュなどの鋳造
容器に使用しても鋼を汚染する心配のないことがわかる
。Furthermore, when silicone resin is used, there is almost no residual carbon, which means that there is no risk of contaminating steel even when the monolithic refractory of the present invention is used in casting containers such as tundishes.
Claims (1)
脂０．５〜１５重量部を含有することを特徴とするＣａ
Ｏ含有不定形耐火物。Ca characterized by containing 0.5 to 15 parts by weight of silicone resin per 100 parts by weight of CaO-containing refractory material.
O-containing monolithic refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016883A JPH03223174A (en) | 1990-01-26 | 1990-01-26 | Amorphous refractory containing cao |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016883A JPH03223174A (en) | 1990-01-26 | 1990-01-26 | Amorphous refractory containing cao |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03223174A true JPH03223174A (en) | 1991-10-02 |
Family
ID=11928573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016883A Pending JPH03223174A (en) | 1990-01-26 | 1990-01-26 | Amorphous refractory containing cao |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03223174A (en) |
-
1990
- 1990-01-26 JP JP2016883A patent/JPH03223174A/en active Pending
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