JPH04224061A - Refractory for continuous casting - Google Patents
Refractory for continuous castingInfo
- Publication number
- JPH04224061A JPH04224061A JP2407487A JP40748790A JPH04224061A JP H04224061 A JPH04224061 A JP H04224061A JP 2407487 A JP2407487 A JP 2407487A JP 40748790 A JP40748790 A JP 40748790A JP H04224061 A JPH04224061 A JP H04224061A
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- weight
- zirconia
- graphite
- refractory
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011819 refractory material Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 25
- 229910002804 graphite Inorganic materials 0.000 abstract description 17
- 239000010439 graphite Substances 0.000 abstract description 17
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000003405 preventing effect Effects 0.000 abstract description 6
- 229910002976 CaZrO3 Inorganic materials 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical group [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 238000004079 fireproofing Methods 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 8
- 238000004901 spalling Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- DJOYTAUERRJRAT-UHFFFAOYSA-N 2-(n-methyl-4-nitroanilino)acetonitrile Chemical compound N#CCN(C)C1=CC=C([N+]([O-])=O)C=C1 DJOYTAUERRJRAT-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 150000002222 fluorine compounds Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000019621 digestibility Nutrition 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 229910002319 LaF3 Inorganic materials 0.000 description 1
- 229910021570 Manganese(II) fluoride Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- CTNMMTCXUUFYAP-UHFFFAOYSA-L difluoromanganese Chemical compound F[Mn]F CTNMMTCXUUFYAP-UHFFFAOYSA-L 0.000 description 1
- 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 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 229910021480 group 4 element Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 235000011835 quiches Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035936 sexual power Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- BYMUNNMMXKDFEZ-UHFFFAOYSA-K trifluorolanthanum Chemical compound F[La](F)F BYMUNNMMXKDFEZ-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、特にアルミニウムを多
く含有し、アルミナ付着によるノズル閉塞を起こしやす
い鋼種の連続鋳造に適した耐火物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory suitable for continuous casting, especially of steels containing a large amount of aluminum and prone to nozzle clogging due to alumina deposition.
【０００２】0002
【従来の技術】従来から、溶鋼の連続鋳造用ノズルとし
てアルミナ−黒鉛質やジルコニア−黒鉛質の耐火物が使
用されている。BACKGROUND OF THE INVENTION Conventionally, alumina-graphite or zirconia-graphite refractories have been used as nozzles for continuous casting of molten steel.
【０００３】またアルミニウムを多く含有し、アルミナ
付着によるノズル閉塞を起こしやすい鋼種に対しては、
ノズル内孔面に通気性の高い材料を配置し、ノズル内部
に設けたスリットからＡｒ、Ｈｅ等の不活性ガスを溶鋼
中に吹き込むスリットノズルが使用されている。[0003] Also, for steel types that contain a large amount of aluminum and are prone to nozzle clogging due to alumina adhesion,
A slit nozzle is used in which a material with high air permeability is arranged on the inner surface of the nozzle and an inert gas such as Ar or He is blown into the molten steel through a slit provided inside the nozzle.
【０００４】またアルミナ付着を軽減する材料として例
えば特開昭５７−７１８６０号公報によれば、ノズルを
構成する耐火物にＣａＯを含有させることにより、優れ
たノズル閉塞効果が得られることが開示されている。ま
た特開昭６２−２８８１６１号公報には、ノズルを構成
する耐火物にＣａＺｒＯ３ （カルシウムジルコネート
）のように元素周期律表の３族及び４族元素の酸化物の
一種又は二種以上を０．５〜５％含有せしめることによ
って、ノズル閉塞の防止効果に優れ、しかもＣａＯ特有
の消化性を抑制できることが開示されている。[0004] Furthermore, as a material for reducing alumina adhesion, for example, JP-A-57-71860 discloses that an excellent nozzle clogging effect can be obtained by incorporating CaO into the refractory constituting the nozzle. ing. Furthermore, JP-A-62-288161 discloses that the refractory constituting the nozzle contains one or more oxides of Group 3 and Group 4 elements of the Periodic Table of the Elements, such as CaZrO3 (calcium zirconate). It is disclosed that by containing CaO in an amount of .5 to 5%, the effect of preventing nozzle clogging is excellent and the digestibility peculiar to CaO can be suppressed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ＣａＯ
を添加したノズルでは、ＣａＯによるアルミナの低融物
化はアルミナに対してかなりのＣａＯ量を必要とし、溶
鋼中のアルミナを溶流させることが十分にできないこと
が多い。しかも、添加したＣａＯが空気中の水分と反応
し消化現象を起こし、また、ＣａＯの膨張がアルミナや
ジルコニアに比較して４０％以上大きく容積安定性に欠
け、さらには、熱衝撃に対する耐スポーリング性が著し
く低下するという問題がある。[Problem to be solved by the invention] However, CaO
In a nozzle containing CaO, a considerable amount of CaO is required to lower the melting point of alumina compared to the alumina, and it is often not possible to sufficiently melt the alumina in the molten steel. Moreover, the added CaO reacts with moisture in the air and causes a digestion phenomenon, and the expansion of CaO is more than 40% compared to alumina and zirconia, resulting in a lack of volumetric stability and poor spalling resistance against thermal shock. There is a problem that sexual performance is significantly reduced.
【０００６】また、かかるＣａＯの消化性を解消するた
めに配合されるＣａＺｒＯ３ の熱膨張はジルコニアと
同程度ではあるがＣａＯとは原料クリンカー中に３５重
量％までしか含有することができないという欠点もある
。[0006]Although the thermal expansion of CaZrO3, which is blended to solve the digestibility of CaO, is on the same level as zirconia, it also has the disadvantage that CaO can only be contained up to 35% by weight in the raw clinker. be.
【０００７】本発明において解決すべき課題は、従来か
ら使用されてきたＣａＯとＣａＺｒＯ３ とに代わるべ
きアルミナ付着防止材を見出すことにある。[0007] The problem to be solved by the present invention is to find an alumina adhesion prevention material that can replace CaO and CaZrO3, which have been conventionally used.
【０００８】[0008]
【課題を解決するための手段】本発明の連続鋳造用耐火
物は黒鉛を５〜４０重量％を含有するジルコニア質から
なる耐火材に弗化物を添加した配合組成を有することを
特徴とする。[Means for Solving the Problems] The continuous casting refractory of the present invention is characterized by having a composition in which a fluoride is added to a zirconia refractory material containing 5 to 40% by weight of graphite.
【０００９】弗化物としてはＣａＦ２ （融点＝１４１
８℃）、ＭｇＦ２ （融点＝１２４８℃）、ＭｎＦ２
（融点＝９２９．５℃）、ＡｌＦ３ （融点：１２９１
℃）、ＬａＦ３ （融点：１４９０℃）、ＬｉＦ（融点
＝８４８℃）等を使用でき、その配合量は配合物全量に
対して１〜２０重量％である。[0009] As a fluoride, CaF2 (melting point = 141
8℃), MgF2 (melting point = 1248℃), MnF2
(melting point = 929.5°C), AlF3 (melting point: 1291
), LaF3 (melting point: 1490°C), LiF (melting point = 848°C), etc., and the blending amount thereof is 1 to 20% by weight based on the total amount of the compound.
【００１０】ジルコニア質からなる耐火材として、シリ
コン、炭化珪素、窒化珪素の中の１種又は２種以上を１
０重量％までを含有することができる。[0010] As the refractory material made of zirconia, one or more of silicon, silicon carbide, and silicon nitride are used.
It can contain up to 0% by weight.
【００１１】さらに、ジルコニア質からなる耐火材とし
てジルコニアの２０重量％以下をジルコンで置換するこ
とができる。Furthermore, as a refractory material made of zirconia, 20% by weight or less of zirconia can be replaced with zircon.
【００１２】0012
【作用】黒鉛−ジルコニア質からなる耐火材に弗化物を
含有させることでアルミナを容易に低融物化させ溶鋼中
のアルミナを溶流させることができる。弗化物の添加量
が１重量％より少ないと溶鋼中のアルミナの溶流が十分
ではなくアルミナ付着を十分に防止できない。２０重量
％を超えると低融物の量が多くなってノズルの耐食性が
不足する。[Operation] By incorporating fluoride into the graphite-zirconia refractory material, it is possible to easily reduce the melting point of alumina and cause the alumina in molten steel to melt. If the amount of fluoride added is less than 1% by weight, the flow of alumina in the molten steel will not be sufficient and alumina adhesion cannot be sufficiently prevented. If it exceeds 20% by weight, the amount of low-melting substances increases and the corrosion resistance of the nozzle becomes insufficient.
【００１３】黒鉛は耐スポーリング性、耐スラグ性を付
与するために使用するが、５重量％より少ないと耐スポ
ーリング性に劣り、４０重量％を超えると溶鋼への溶解
の問題や、黒鉛の柔らかい性質からくる摩擦損傷の問題
が生じる。黒鉛の種類としては、鱗状黒鉛、土状黒鉛、
人造黒鉛、キッシュ黒鉛等が使用可能であるが、耐スポ
ーリング性、耐食性の観点から、鱗状黒鉛を使用するこ
とが望ましい。また、耐食性低下の危険性はあるが、メ
ソフェースピッチ粉末、窒素含有レジン粉末等のカーボ
ンもしくは焼成中にカーボンになる粉末で黒鉛粉末を置
換して耐スポーリング性向上を狙うことも可能である。Graphite is used to impart spalling resistance and slag resistance, but if it is less than 5% by weight, the spalling resistance will be poor, and if it exceeds 40% by weight, there will be problems with dissolution in molten steel and graphite The problem of friction damage arises due to the soft nature of the material. Types of graphite include scale graphite, earthy graphite,
Artificial graphite, Quiche graphite, etc. can be used, but from the viewpoint of spalling resistance and corrosion resistance, it is desirable to use scaly graphite. Although there is a risk of reducing corrosion resistance, it is also possible to improve spalling resistance by replacing graphite powder with carbon, such as mesoface pitch powder or nitrogen-containing resin powder, or powder that becomes carbon during firing. .
【００１４】シリコン、炭化珪素、窒化珪素の１種もし
くは２種以上を添加することは酸化防止の観点から可能
である。しかし理由は良くわからないが１０重量％を超
えて添加するとアルミナ付着防止効果が低下してしまう
。From the viewpoint of preventing oxidation, it is possible to add one or more of silicon, silicon carbide, and silicon nitride. However, although the reason is not well understood, if it is added in an amount exceeding 10% by weight, the effect of preventing alumina adhesion decreases.
【００１５】弗化物を１重量％から２０重量％まで含有
させるため骨材は弗化物に強いジルコニアの使用が適し
ている。ジルコニアの中、その２０重量％より少ない置
換量であれば安いジルコンの使用も可能である。ジルコ
ニアの未安定品は膨張において異常が見られるため、ま
た、完全安定品は膨張が大きいため、部分安定品の使用
が望ましい。ジルコニアの安定化剤はＣａＯ、ＭｇＯ、
Ｙ２ Ｏ３ 等があるがいずれも使用可能であり耐食性
、コスト等のバランスを考えて使用することが望ましい
。また、ジルコニアの代わりにカルシウムジルコネート
を使用することも可能である。[0015] In order to contain fluoride from 1% by weight to 20% by weight, it is suitable to use zirconia, which is resistant to fluoride, as the aggregate. In zirconia, it is possible to use cheap zircon as long as the amount of substitution is less than 20% by weight. Since unstabilized zirconia products exhibit abnormal expansion, and completely stable products have large expansion, it is desirable to use partially stabilized products. Stabilizers for zirconia include CaO, MgO,
There are Y2 O3 and the like, but any of them can be used, and it is desirable to use them in consideration of the balance between corrosion resistance, cost, etc. It is also possible to use calcium zirconate instead of zirconia.
【００１６】ノズル用原料としてジルコニアより熱膨張
が低く、耐スポーリング性の点からジルコニアより適し
ていると考えられているアルミナ、ムライト、スピネル
、溶融石英等の酸化物は弗化物に対する耐食性に劣り使
用できない。Oxides such as alumina, mullite, spinel, and fused silica, which are considered to be more suitable as raw materials for nozzles than zirconia in terms of their thermal expansion and spalling resistance, have poor corrosion resistance against fluorides. I can not use it.
【００１７】また、この配合物は結合材を用いて混練し
成形した後、非酸化性雰囲気で焼成してノズル等の連続
鋳造用耐火物とすることができる。[0017] Furthermore, this compound can be kneaded using a binder, molded, and then fired in a non-oxidizing atmosphere to produce refractories for continuous casting such as nozzles.
【００１８】[0018]
【実施例】本発明を実施例に基づいて説明する。表１、
表２及び表３に本発明に係る配合組成を比較例とともに
示す。EXAMPLES The present invention will be explained based on examples. Table 1,
Tables 2 and 3 show the compounding compositions according to the present invention together with comparative examples.
【００１９】[0019]
【表１】[Table 1]
【００２０】[0020]
【表２】[Table 2]
【００２１】[0021]
【表３】[Table 3]
【００２２】比較例１は特開昭６２−２８８１６１号公
報に記載されている範囲のもの、比較例２はアルミナ−
黒鉛質である。比較例３から比較例８までは本発明と同
様の組成を有するものではあるが範囲外である。比較例
９はＣａＯを主成分とする石灰−黒鉛質である。[0022] Comparative Example 1 is a product within the range described in JP-A No. 62-288161, and Comparative Example 2 is alumina.
It is graphitic. Comparative Examples 3 to 8 have compositions similar to those of the present invention, but are outside the range. Comparative Example 9 is lime-graphite containing CaO as a main component.
【００２３】各表に示す組成を有する配合物に適量の有
機樹脂を添加し混練した後、１２００ｋｇ／ｃｍ２ で
Ｃ．Ｉ．Ｐ成形し、還元雰囲気で焼結した後、品質とア
ルミナの付着の状況を観測した。その結果を各表に示す
。After adding an appropriate amount of organic resin to the formulation having the composition shown in each table and kneading it, C.I. I. After P molding and sintering in a reducing atmosphere, quality and alumina adhesion were observed. The results are shown in each table.
【００２４】比較例１と比較例２に示すようにカルシウ
ムジルコネートクリンカー使用品も、従来技術品もアル
ミナの付着が起こり、耐付着性は不十分である。比較例
３と実施例１を比較すると弗化物が１重量％以上でない
とアルミナの付着が起こり、耐付着性は十分でないこと
が分かる。As shown in Comparative Examples 1 and 2, alumina adheres to both the products using calcium zirconate clinker and the prior art products, and the adhesion resistance is insufficient. Comparing Comparative Example 3 and Example 1, it can be seen that unless the fluoride content is 1% by weight or more, alumina will adhere and the adhesion resistance will not be sufficient.
【００２５】実施例２と比較例４を比較すると弗化物が
２０重量％未満でないと弗化物が多くなりすぎて耐食性
が低下し、不足することが分かる。Comparing Example 2 and Comparative Example 4, it can be seen that unless the fluoride content is less than 20% by weight, the fluoride content becomes too large and the corrosion resistance decreases, leading to a shortage.
【００２６】実施例３、４、５より天然の弗化物の代表
例として蛍石、ＣａＦ２ 、ＭｇＦ２ が他の弗化物と
同様に使用可能であることが分かる。From Examples 3, 4, and 5, it can be seen that fluorite, CaF2, and MgF2 as representative examples of natural fluorides can be used in the same way as other fluorides.
【００２７】比較例５と実施例６の比較により黒鉛量が
５重量％超でないと、黒鉛添加量が少な過ぎて、耐スポ
ーリング性不足である。A comparison between Comparative Example 5 and Example 6 shows that unless the amount of graphite exceeds 5% by weight, the amount of graphite added is too small and the spalling resistance is insufficient.
【００２８】実施例７と比較例６の比較により黒鉛量が
４０重量％未満でないと、黒鉛添加量が多過ぎて、耐食
性が不足する。A comparison between Example 7 and Comparative Example 6 shows that unless the amount of graphite is less than 40% by weight, the amount of graphite added is too large and the corrosion resistance is insufficient.
【００２９】実施例４、７、８、９、１０、１１よりシ
リコン、炭化珪素、窒化珪素の１種又は２種以上が添加
可能である。実施例１１と比較例７の比較によりその添
加量が１０重量％未満でないと、アルミナの付着が起こ
り、耐付着性不足となる。From Examples 4, 7, 8, 9, 10, and 11, one or more of silicon, silicon carbide, and silicon nitride can be added. A comparison between Example 11 and Comparative Example 7 shows that unless the amount added is less than 10% by weight, alumina will adhere, resulting in insufficient adhesion resistance.
【００３０】実施例１２と比較例８の比較によりジルコ
ンへのジルコニア置換量が２０重量％を超えると、ジル
コン中のＳｉＯ２ 成分量が多くなり過ぎ、アルミナの
付着が起こり、耐付着性が不足する。A comparison between Example 12 and Comparative Example 8 shows that when the amount of zirconia substituted in zircon exceeds 20% by weight, the amount of SiO2 component in zircon becomes too large, causing alumina to adhere, resulting in insufficient adhesion resistance. .
【００３１】比較例９より石英−黒鉛質は耐スポーリン
グ性、耐消化性に劣っている。According to Comparative Example 9, quartz-graphite is inferior in spalling resistance and digestion resistance.
【００３２】実施例１３よりカルシウムジルコネートの
使用も可能である。From Example 13, it is also possible to use calcium zirconate.
【００３３】[0033]
【発明の効果】本発明の連続鋳造用耐火物は、アルミナ
付着防止効果に優れるため、アルミナ付着によるノズル
閉塞を起こし易い鋼種に適用しても長時間にわたり安定
した使用が可能となる。[Effects of the Invention] The continuous casting refractory of the present invention has an excellent effect of preventing alumina adhesion, so it can be used stably for a long period of time even when applied to steel types that are prone to nozzle clogging due to alumina adhesion.
Claims (4)
５〜４０重量％、ジルコニアクリンカーを４０〜９４重
量％含有する配合組成物からなる連続鋳造用耐火物。1. A refractory for continuous casting comprising a blended composition containing 1 to 20% by weight of fluoride, 5 to 40% by weight of graphite powder, and 40 to 94% by weight of zirconia clinker.
クリンカーの１０重量％以下をシリコン、炭化珪素、窒
化珪素の中の１種又は２種以上で置換した連続鋳造用耐
火物。2. The refractory for continuous casting according to claim 1, wherein 10% by weight or less of the zirconia clinker is replaced with one or more of silicon, silicon carbide, and silicon nitride.
て、ジルコニアクリンカーの中の２０重量％以下をジル
コンで置換した連続鋳造用耐火物。3. The refractory for continuous casting according to claim 1 or 2, wherein 20% by weight or less of the zirconia clinker is replaced with zircon.
いて、ジルコニアクリンカーの中のＣａＯ成分が２〜３
５％である連続鋳造用耐火物。4. According to any one of claims 1 to 3, the CaO component in the zirconia clinker is 2 to 3.
5% continuous casting refractories.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2407487A JPH04224061A (en) | 1990-12-27 | 1990-12-27 | Refractory for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2407487A JPH04224061A (en) | 1990-12-27 | 1990-12-27 | Refractory for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04224061A true JPH04224061A (en) | 1992-08-13 |
Family
ID=18517057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2407487A Pending JPH04224061A (en) | 1990-12-27 | 1990-12-27 | Refractory for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04224061A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05309457A (en) * | 1992-05-08 | 1993-11-22 | Nippon Steel Corp | Refractory for continuous casting |
| CN1060752C (en) * | 1997-02-27 | 2001-01-17 | 宝山钢铁(集团)公司 | Production method of refractory material for immersed sprue |
| CN1062248C (en) * | 1995-03-13 | 2001-02-21 | 无锡市南方耐火材料厂 | Refractory for continuous casting and immersion type riser |
| CN1070465C (en) * | 1996-12-10 | 2001-09-05 | 济南钢铁集团总公司钢铁研究所 | Gate material for continuous casting and preparing process thereof |
| CN1076718C (en) * | 1996-12-10 | 2001-12-26 | 济南钢铁集团总公司钢铁研究所 | Hydration-proof zirconium oxide-calcium oxide material and its preparing process |
| CN100447107C (en) * | 2006-06-28 | 2008-12-31 | 宝山钢铁股份有限公司 | Immersion type water gap noumenon material containing calcium oxide |
| CN106470958A (en) * | 2014-07-14 | 2017-03-01 | 里弗雷克特里知识产权两合公司 | Refractory product, the purposes of zirconium dioxide, zirconium dioxide, be used for the method manufacturing refractory product and the refractory product being produced from |
| CN106986654A (en) * | 2017-03-28 | 2017-07-28 | 常州大学 | A kind of preparation method of slag corrosion resistance type refractory for continuous casting |
-
1990
- 1990-12-27 JP JP2407487A patent/JPH04224061A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05309457A (en) * | 1992-05-08 | 1993-11-22 | Nippon Steel Corp | Refractory for continuous casting |
| CN1062248C (en) * | 1995-03-13 | 2001-02-21 | 无锡市南方耐火材料厂 | Refractory for continuous casting and immersion type riser |
| CN1070465C (en) * | 1996-12-10 | 2001-09-05 | 济南钢铁集团总公司钢铁研究所 | Gate material for continuous casting and preparing process thereof |
| CN1076718C (en) * | 1996-12-10 | 2001-12-26 | 济南钢铁集团总公司钢铁研究所 | Hydration-proof zirconium oxide-calcium oxide material and its preparing process |
| CN1060752C (en) * | 1997-02-27 | 2001-01-17 | 宝山钢铁(集团)公司 | Production method of refractory material for immersed sprue |
| CN100447107C (en) * | 2006-06-28 | 2008-12-31 | 宝山钢铁股份有限公司 | Immersion type water gap noumenon material containing calcium oxide |
| CN106470958A (en) * | 2014-07-14 | 2017-03-01 | 里弗雷克特里知识产权两合公司 | Refractory product, the purposes of zirconium dioxide, zirconium dioxide, be used for the method manufacturing refractory product and the refractory product being produced from |
| JP2017528400A (en) * | 2014-07-14 | 2017-09-28 | リフラクトリー・インテレクチュアル・プロパティー・ゲー・エム・ベー・ハー・ウント・コ・カーゲー | Refractory product, use of zirconium dioxide, zirconium dioxide, method for producing refractory product, and refractory product produced using the same |
| CN106986654A (en) * | 2017-03-28 | 2017-07-28 | 常州大学 | A kind of preparation method of slag corrosion resistance type refractory for continuous casting |
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