JPH03141165A - Lining structure of molten metal container - Google Patents
Lining structure of molten metal containerInfo
- Publication number
- JPH03141165A JPH03141165A JP1280939A JP28093989A JPH03141165A JP H03141165 A JPH03141165 A JP H03141165A JP 1280939 A JP1280939 A JP 1280939A JP 28093989 A JP28093989 A JP 28093989A JP H03141165 A JPH03141165 A JP H03141165A
- Authority
- JP
- Japan
- Prior art keywords
- lining
- molten metal
- refractory
- zircon
- mullite
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 21
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 21
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 17
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 12
- -1 alkali metal salt Chemical class 0.000 claims abstract description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 description 9
- 150000004760 silicates Chemical class 0.000 description 9
- 239000011449 brick Substances 0.000 description 8
- 150000001340 alkali metals Chemical class 0.000 description 6
- 239000012266 salt solution Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000003313 weakening effect Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 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
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 229910001678 gehlenite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- SDKPSXWGRWWLKR-UHFFFAOYSA-M sodium;9,10-dioxoanthracene-1-sulfonate Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)[O-] SDKPSXWGRWWLKR-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel 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、流し込み内張り施工法による溶融金属容器の
裏張り耐火物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a refractory lining for molten metal containers using a pour lining construction method.
一般に、溶融金属容器の裏張り耐火物は、ロウ石質、ジ
ルコン質でライニングされ、万が一内張り耐火物が過剰
に溶損されても１チヤージは安全に使用でき、溶融金属
の漏れを防ぐ重要な耐火物である。Generally, the refractory lining of a molten metal container is lined with waxite or zircon, and even if the lining refractory is excessively eroded, it can be used safely for one charge, which is an important material to prevent leakage of molten metal. It is refractory.
近年、溶融金属容器の内張り耐火物として、耐火物原単
位の低減、施工性の容易さを狙って、流し込み材を使用
することが多くなっている。この内張り用流し込み材に
は、材料の流し込み作業を確保するため、可溶性アルカ
リ金属塩が多くの水と共に添加されている。In recent years, pouring materials have been increasingly used as refractory linings for molten metal containers with the aim of reducing the unit consumption of refractories and facilitating construction. A soluble alkali metal salt is added to this lining pouring material along with a large amount of water in order to ensure the pouring operation of the material.
従来の流し込み内張り施工法による溶融金属容器の裏張
り耐火物には、れんがで内張リライニングした溶融金属
容器の裏張り耐火物では全く見られなかった裏張り耐火
物脆弱化現象が多く見られる。そのため、裏張り耐火物
のライフが低下し、溶融金属の漏れにつながることがあ
るという問題があった。In the refractory lining of molten metal containers made using the conventional pour lining construction method, a phenomenon of weakening of the lining refractory, which was not observed at all in the refractory lining of molten metal containers relined with bricks, is often observed. . Therefore, there was a problem in that the life of the lining refractory was reduced, which could lead to leakage of molten metal.
しかしながら、従来のムライト、ジルコンを除く珪酸塩
を多く含む耐火物では、この間圧の解決は不可能であっ
た。However, with conventional refractories containing a large amount of silicates other than mullite and zircon, it has been impossible to solve this problem.
また、塩基性耐火物については、ドロマイト。Also, for basic refractories, dolomite.
石灰耐火物では消化の問題があり、使用することができ
ず、マグ−クロ、マグネシア、マグ−スピネル耐火物で
は熱膨張が高い。したがって、耐スポーリング、抜熱量
に劣り溶融金属容器の裏張り耐火物としては基本的に適
していない。Lime refractories have digestion problems and cannot be used, and magkuro, magnesia, and mag-spinel refractories have high thermal expansion. Therefore, it is inferior in spalling resistance and heat removal, and is basically unsuitable as a lining refractory for molten metal containers.
上記問題の発生原因を究明し、該原因を取り除く若しく
は原因となっている条件を変更することによりこの問題
を解決した。This problem was solved by investigating the cause of the above problem and removing the cause or changing the conditions causing the problem.
この裏張り耐火物の脆弱化の原因としては、溶融金属容
器予熱時もしくは溶融金属からの高熱によって高温のア
ルカリ金属塩溶液が可溶性金属塩含有流し込み材から発
生し、この高温のアルカリ金属塩溶液による熱水反応の
ため、裏張り耐火物中の珪酸塩が溶出することにあると
考えた。The cause of this weakening of the refractory lining is that a high-temperature alkali metal salt solution is generated from the pouring material containing soluble metal salts during preheating of the molten metal container or due to high heat from the molten metal. It was thought that the silicates in the refractory lining were eluted due to a hydrothermal reaction.
この考えを実証する為に以下の通りゲーレナイト、粘土
シャモット、長石、ロウ石、ムライト。To demonstrate this idea, the following examples are used: gehlenite, clay chamotte, feldspar, waxite, and mullite.
ジルコンについて金嘱塩溶液中での煮沸実験を実施した
。A boiling experiment was conducted on zircon in a gold salt solution.
く実験条件〉
原料条件： ０．１０５ｍｍ 〜０．０４４ｍｍアルカ
リ溶液：水酸化す） ＩＪウム５％水溶液煮沸時間：２
４時間
（８時間毎に減員分だけ温水を追加）
結果を次の表１に示す。Experimental conditions> Raw material conditions: 0.105 mm ~ 0.044 mm Alkaline solution: hydroxide) IJum 5% aqueous solution Boiling time: 2
4 hours (hot water was added every 8 hours to compensate for the reduced number of people) The results are shown in Table 1 below.
表 １
粘土シャモット、ロウ石はムライトを一部含むため、ア
ルカリ金属塩溶液への溶解量が減少した。Table 1 Clay chamotte and waxite contain some mullite, so the amount dissolved in the alkali metal salt solution decreased.
ムライト、ジルコンでは溶解しなかった。Mullite and zircon were not dissolved.
上記実験結果により、原料について裏張り耐火物の脆弱
化の原因がムライト、ジルコンを除く珪酸塩の高温アル
カリ金属溶液中への溶解にあるとの考えは実証された。The above experimental results demonstrate the idea that the cause of brittleness of the lining refractories is the dissolution of silicates other than mullite and zircon into the high-temperature alkali metal solution.
上記実験により究明された本課題の原因に基づき更に詳
細に調査すべく以下の通リムライト、ジ？レコンを除く
珪酸塩の含有レベルの異なる耐火物をアルカリ金属塩溶
液中で煮沸し、強度の劣化度合を調査する実験を行った
。その結果を第１図に示す。Based on the cause of this problem determined by the above experiment, we will investigate the following in more detail: An experiment was conducted to investigate the degree of strength deterioration by boiling refractories containing different levels of silicate, except for Recon, in an alkali metal salt solution. The results are shown in FIG.
く実験条件〉
試料寸法： ５０ Ｘ５０ Ｘ５０ｍｍアルカリ溶液：
水酸化ナトリウム５％水溶液煮沸時間；２４時間
（８時間毎にアルカリ溶液取替え）
この実験により、アルカリ金属塩溶液による熱水反応に
よってムライト、ジルコンを除く珪酸塩が溶出し、耐火
物の強度劣化が大きくなる、つまり脆弱化が進行するこ
とが判った。Experimental conditions> Sample dimensions: 50 x 50 x 50 mm Alkaline solution:
Boiling time for 5% sodium hydroxide aqueous solution: 24 hours (replace alkaline solution every 8 hours) This experiment showed that silicates other than mullite and zircon were eluted by the hydrothermal reaction with the alkali metal salt solution, and the strength of refractories deteriorated. It was found that the size increases, which means that the weakening progresses.
耐火物中のムライト、ジルコンを除く珪酸塩の含有量を
１０重量％以下にすれば、耐火物の強度劣化を大幅に少
なくすること、つまり脆弱化を防止することが可能なこ
とが判った。It has been found that by reducing the content of silicates other than mullite and zircon in the refractory to 10% by weight or less, it is possible to significantly reduce the deterioration in strength of the refractory, that is, to prevent brittleness.
従って本課題を解決する為に耐火物中のムライト、ジル
コンを除く珪酸塩の含有量が１０重１％以下で、ムライ
ト、ジルコンを含むＡｆ２０゜３ｉ０２若しくはＡ（１
２０ｓ −３ｉｏｚ −ＺｒＣｈ若しくはＺｒ０ｔ
Ｓ＋０２系耐火物でライニングする。Therefore, in order to solve this problem, the content of silicates excluding mullite and zircon in the refractory is 1% by weight or less, and Af20°3i02 or A(1
20s -3ioz -ZrCh or Zr0t
Lining with S+02 series refractory.
溶融金属容器の内張りを可溶性アルカリ金属塩含有流し
込み施工法により行い、裏張り耐火物としてムライト、
ジルコンを除く珪酸塩が１０重量％以下である耐火物で
ライニングする。The lining of the molten metal container is carried out using a pouring method containing soluble alkali metal salts, and mullite, mullite, etc. are used as the lining refractory.
Lining with a refractory containing 10% by weight or less of silicates excluding zircon.
可溶性アルカリ金属塩を１．５重量％含むジルコン質流
し込み材で内張リライニングした３００を取鍋にムライ
ト、ジルコンを除く珪酸塩を５５重量％含むロウ石れん
がをスラグラインより下に、同じくムライト、ジルコン
を除く珪酸塩を１４重量％含むジルコンれんがをスラグ
ライン部（こ裏弓長りした。300 relined with zircon based pouring material containing 1.5% by weight of soluble alkali metal salts, mullite in the ladle, and waxite bricks containing 55% by weight of silicates excluding zircon below the slag line, also in mullite. A zircon brick containing 14% by weight of silicate excluding zircon was used to lengthen the slag line section.
この従来からの裏張りライニングは１００回使用位から
脆弱化が進行し、３００回使用で交替となった。This conventional lining began to become brittle after 100 uses, and had to be replaced after 300 uses.
かつて使用してしンだ内張リライニングにジルコンれん
がを用い、上記の従来からの裏張りライニングを施した
物は１０００回使用で安全性の面から取り替えていた。In the past, zircon bricks were used for the inner relining, and the conventional back lining was replaced after 1000 uses for safety reasons.
可溶性アルカリ金属塩を１．５重量％含むジルコン質流
し込み材で内張リライニングした３００を取鍋に本発明
のムライト、ジルコンを除く珪酸塩を８重量％含むジル
コンれんがと、４重量％含むアルミナれんが（Ａｌ１０
３ ＝６２重量％）を円周方向に半張りで裏張りした。Mullite of the present invention, a zircon brick containing 8% by weight of silicates excluding zircon, and alumina containing 4% by weight are placed in a 300 ladle lined with a zircon casting material containing 1.5% by weight of soluble alkali metal salts. Brick (Al10
3 = 62% by weight) was lined with half tension in the circumferential direction.
これは従来のれんが内張リライニングを用いていた時取
り替えていた１０００回使用時点になってもれんがの脆
弱化はほとんどみられなかった。This shows that the bricks showed almost no weakening even after 1,000 uses, which was the time when conventional brick relining was used.
本発明による溶融金属容器ライニング構造は以上のよう
な構成であるから、次のような効果を奏する。Since the molten metal container lining structure according to the present invention has the above-described configuration, it has the following effects.
■ 溶融金属容器のライフが向上し交換までの使用回数
を伸ばすことができ、コスト低減となる。■ The life of the molten metal container is improved and the number of times it can be used before replacement can be extended, resulting in cost reduction.
■ また、溶融金属の漏れという事故につながる危険性
を大幅に減らすことが可能になる。■ It also becomes possible to significantly reduce the risk of accidents resulting in leakage of molten metal.
■ 上記効果を損なうことなく、施工性で有利でありか
つ原単価性に優れた流し込み内張り施工法を行うことが
できる。- A pour-in lining construction method that is advantageous in terms of workability and excellent cost per unit can be performed without impairing the above-mentioned effects.
第１図はムライト、ジルコンを除く珪酸塩の含有量の異
なる耐火物をアルカリ金属塩溶液中で煮沸した場合の該
耐火物の強度の劣化度合を示すグラフである。FIG. 1 is a graph showing the degree of deterioration in strength of refractories with different silicate contents, excluding mullite and zircon, when the refractories are boiled in an alkali metal salt solution.
Claims (1)
よる溶融金属容器の裏張り耐火物としてムライト，ジル
コンを除く珪酸塩が１０重量％以下で、ムライト，ジル
コンを含むＡｌ＿２Ｏ＿３−ＳｉＯ＿２若しくはＡｌ＿
２Ｏ＿３−ＳｉＯ＿２−ＺｒＯ＿２若しくはＺｒＯ＿２
−ＳｉＯ＿２系耐火物でライニングしたことを特徴とす
る溶融金属容器ライニング構造。1. As a lining refractory for molten metal containers using a pour lining method containing soluble alkali metal salts, silicate excluding mullite and zircon is 10% by weight or less, and Al_2O_3-SiO_2 or Al_ containing mullite and zircon.
2O_3-SiO_2-ZrO_2 or ZrO_2
-A molten metal container lining structure characterized by being lined with a SiO_2-based refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280939A JPH03141165A (en) | 1989-10-27 | 1989-10-27 | Lining structure of molten metal container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280939A JPH03141165A (en) | 1989-10-27 | 1989-10-27 | Lining structure of molten metal container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03141165A true JPH03141165A (en) | 1991-06-17 |
Family
ID=17632024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280939A Pending JPH03141165A (en) | 1989-10-27 | 1989-10-27 | Lining structure of molten metal container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03141165A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2532658B (en) * | 2013-09-20 | 2017-07-26 | Honda Motor Co Ltd | Protective cover for welding gun |
-
1989
- 1989-10-27 JP JP1280939A patent/JPH03141165A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2532658B (en) * | 2013-09-20 | 2017-07-26 | Honda Motor Co Ltd | Protective cover for welding gun |
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