JP7289841B2 - 耐火組成物および使用中に形成される耐酸化バリア層 - Google Patents
耐火組成物および使用中に形成される耐酸化バリア層 Download PDFInfo
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- JP7289841B2 JP7289841B2 JP2020542789A JP2020542789A JP7289841B2 JP 7289841 B2 JP7289841 B2 JP 7289841B2 JP 2020542789 A JP2020542789 A JP 2020542789A JP 2020542789 A JP2020542789 A JP 2020542789A JP 7289841 B2 JP7289841 B2 JP 7289841B2
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Description
4つの異なる耐火組成物の溶融試験を、4つの別々の区画に分けたワークライニングを有するるつぼ内で再溶融したAISI 1018鋼の25キログラムの熱間圧延された棒を使用して行った。以下の表1に示したように(耐火組成物の総質量に対するパーセントで)、ワークライニングのそれぞれの区画は、異なる耐火組成物を有した。区画2、3および4に対応する耐火組成物において、対応する3.0%、6.0%および9.0%二酸化チタンは、同量のアルミナを置き換えられている。4つの耐火組成物は、二酸化チタン含有量およびアルミナ含有量を除いて同一であった。4つ全ての耐火組成物は、二酸化チタン含有量に応じて約54~59%の粗粒板状アルミナ粒子および約26~36%の微粒板状アルミナ粒子を含有した。区画2、3および4の組成物の成分は、88%~97%のアルミナ、0.1%~1.1%のシリカ、0.25%~2.1%の酸化カルシウム、および0.25%~9.5%の二酸化チタンの範囲内である。酸化鉄は、組成物の、その他の成分内の偶発的な不純物であり、そしてそれ自体は添加剤成分ではない。区画2、3および4の組成物におけるアルミナ対二酸化チタンの比は、それぞれ、31.4、15.3、および9.8であり、および35~8の範囲内である。
本発明の種々の態様は、以下の番号をつけた項目を含むが、これらに限定されない。
1. 溶融金属用容器内にワークライニングを形成するための耐火組成物であって、耐火組成物の総質量に対するパーセントで、
少なくとも150マイクロメートル(+100メッシュ)の粒径を有する少なくとも20.0%の粗粒耐火物粒子であって、当該粗粒耐火物粒子は、アルミナ粒子、マグネシア粒子、アルミン酸マグネシウムスピネル粒子、ジルコニア粒子、もしくはドロマ粒子、またはそれらのいずれかの組み合わせを含み、
(i)少なくとも1.5%の酸化カルシウム添加剤、または
(ii)少なくとも5.0%の低酸化マグネシアで150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iii)少なくとも0.25%の酸化カルシウム添加剤および少なくとも5.0%の低酸化マグネシアで150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iv)少なくとも0.25%の二酸化チタン
のうちの1つまたは複数と、を含む、耐火組成物。
2. 耐火組成物の総質量に対するパーセントで、
少なくとも50.0%の粗粒耐火物粒子と、
少なくとも25.0%の低酸化マグネシアの微粒耐火物粒子と、を含む、項目1の耐火組成物。
3. 耐火組成物の総質量に対するパーセントで、
少なくとも55.0%の粗粒耐火物粒子と、
少なくとも30.0%の低酸化マグネシアの微粒耐火物粒子と、を含む、項目1または項目2の耐火組成物。
4. 耐火組成物の総質量に対するパーセントで、
少なくとも80.0%のアルミナと、
3.0%までのシリカと、
0.5%までの酸化鉄(III)と、
0.5~10.0%の酸化カルシウムと、
少なくとも0.1%のマグネシアと、
1.0%までのアルカリ酸化物と、
15.0%までの二酸化チタンと、を含む、項目1~3のいずれか1項の耐火組成物。
5. 耐火組成物の総質量に対するパーセントで、
少なくとも90.0%のアルミナと、
1.1%までのシリカと、
0.3%までの酸化鉄(III)と、
0.5~9.9%の酸化カルシウムと、
7.0%までのマグネシアと、
0.5%までのアルカリ酸化物と、
0.1~9.5%の二酸化チタンと、を含む、項目1~4のいずれか1項の耐火組成物。
6. 粗粒耐火物粒子が、シリカを実質的に含まない、項目1~5のいずれか1項の耐火組成物。
7. 組成物が、酸化鉄を実質的に含まない、項目1~6のいずれか1項の組成物。
8. 粗粒耐火物粒子が、酸化カルシウム、橄欖石、およびシリカを実質的に含まない、項目1~7のいずれか1項の耐火組成物。
9. 粗粒耐火物粒子が、少なくとも300マイクロメートル(+48メッシュ)の粒径を有するアルミナ粒子を含む、項目1~8のいずれか1項の耐火組成物。
10. 耐火組成物の総質量に対するパーセントで、0.25%~15.0%の二酸化チタンを含む、項目1~9のいずれか1項の耐火組成物。
11. 耐火組成物の総質量に対するパーセントで、90.0%~99.0%の合計されたアルミナおよびチタン二酸化物を含む、項目1~10のいずれか1項の耐火組成物。
12. 耐火組成物の総質量に対するパーセントで、25.0%~55.0%の低酸化マグネシアの、微粒耐火物粒子を含む、項目1~11のいずれか1項の耐火組成物。
13. 耐火組成物の総質量に対するパーセントで、30.0%~40.0%の低酸化マグネシアの、微粒耐火物粒子を含む、項目12の耐火組成物。
14. 低酸化マグネシア、微粒耐火物粒子が、150マイクロメートルより小さい(-100メッシュ)平均粒子径を有するアルミナ粒子を含む、項目1~13のいずれか1項の耐火組成物。
15. 耐火組成物の総質量に対するパーセントで、少なくとも80.0の%アルミナ粒子、好ましくは少なくとも90%のアルミナ粒子を含む、項目1~14のいずれか1項の耐火組成物。
16. アルミナ粒子の総質量の少なくとも35.0%が、少なくとも150マイクロメートル(+100メッシュ)の粒径を有し、好ましくはアルミナ粒子の総質量の少なくとも30.0%が、少なくとも300マイクロメートル(+48メッシュ)の粒径を有し、かつアルミナ粒子の総質量の少なくとも35.0%が、150マイクロメートルより小さい(-100メッシュ)粒径を有する、項目15の耐火組成物。
17. アルミナ粒子の総質量の少なくとも30.0%が、300~600マイクロメートル(+48メッシュ;-28メッシュ)の粒径を有し、かつアルミナ粒子の総質量の少なくとも35.0%が、150マイクロメートルより小さい(-100メッシュ)粒径を有する、項目15~16のいずれか1項の耐火組成物。
18. 耐火組成物の総質量に対するパーセントで:
少なくとも25.0%の低酸化マグネシアの、微粒耐火物粒子と、
0.5~10.0%の酸化カルシウム添加剤と、を含む、項目1~17のいずれか1項の耐火組成物。
19. 耐火組成物の総質量に対するパーセントで:
少なくとも25.0~55.0%の低酸化マグネシアの、微粒耐火物粒子と、
1.0~5.0%の酸化カルシウム添加剤と、を含む、項目1~18のいずれか1項の耐火組成物。
20. 耐火組成物の総質量に対するパーセントで、45~75%の粗粒耐火物粒子を含む、項目1~19のいずれか1項の耐火組成物。
21. 溶融金属用容器の溶融接触表面の少なくとも一部の上に項目1~20のいずれか1項の耐火組成物を形成することを含む溶融金属用容器内に単回使用ワークライニングを形成するための方法であって、耐火組成物が、スプレー、吹き付け、ショットクリーチング、振動、キャスティング、こて塗り、もしくは耐火組成物から形成される予備成形された耐火物形状の配置、またはそのいずれかの組み合わせによって形成される、方法。
22. 項目1~20のいずれか1項の耐火組成物から形成される溶融金属用容器用のワークライニングであって、
粗粒耐火物粒子を含む耐火物相と、
耐火物相の粗粒耐火物粒子を濡らし、かつ浸潤する鉄または鋼を含む金属相と、を含む、ワークライニング。
23. ワークライニングが、単回使用ワークライニングである、項目22のワークライニング。
24. 溶融金属用容器であって、
底および底から延びる側面と、
溶融金属用容器の底および側面の少なくとも一部の上に形成された、項目22または項目23のワークライニングと、を備える、溶融金属用容器。
25. 溶融金属用容器が、連続鋳造タンデッシュを備える、項目24の溶融金属用容器。
26. 溶融金属用容器用のワークライニングであって、
少なくとも150マイクロメートル(+100メッシュ)の粒径を有する粗粒耐火物粒子を含む耐火物相であって、粗粒耐火物粒子が、アルミナ粒子、マグネシア粒子、アルミン酸マグネシウムスピネル粒子、ジルコニア粒子、もしくはドロマ粒子、またはそのいずれかの組み合わせを含む、耐火物相と、
耐火物相の粗粒耐火物粒子を濡らし、かつ浸潤する鉄または鋼を含む金属相と、を含む、ワークライニングであって、
耐火組成物の総質量に対するパーセントで、
少なくとも20.0%の粗粒耐火物粒子と、
(i)少なくとも1.5%の酸化カルシウム添加剤、または
(ii)少なくとも5.0%の低酸化マグネシアの、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iii)少なくとも0.25%の酸化カルシウム添加剤および少なくとも5.0%の低酸化マグネシアの、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iv)少なくとも0.25%の二酸化チタンのうちの1つまたは複数と、を含む耐火組成物から形成される、ワークライニング。
27. 溶融金属用容器の溶融接触表面の少なくとも一部の上に耐火組成物を形成することを含む方法であって、耐火組成物が、スプレー、吹き付け、ショットクリーチング、振動、キャスティング、こて塗り、もしくは耐火組成物から形成される予備成形された耐火物形状の配置、またはそのいずれかの組み合わせによって形成される、項目26のワークライニングを形成するための方法。
28. 耐火組成物が、少なくとも22%の見掛けの開孔率を有する形成された耐火層を形成する、項目27の方法。
29. 耐火層が、25~55%の見掛けの開孔率を有する、項目28の方法。
30. 耐火層が、スプレーによって形成される、項目27~29のいずれか1項の方法。
31. 溶融金属用容器であって、
底および底から延びる側面と、
溶融金属用容器の底および側面の少なくとも一部の上に形成された項目26のワークライニングと、を備える、溶融金属用容器。
32. 溶融金属用容器が、連続鋳造タンデッシュを備える、項目31の溶融金属用容器。
* * * *
Claims (10)
- 溶融金属用容器においてワークライニングを形成するための耐火組成物であって、前記耐火組成物が、前記耐火組成物の総質量に対するパーセントで、
少なくとも150マイクロメートル(+100メッシュ)の粒径を有する少なくとも20.0%の粗粒耐火物粒子であって、
当該粗粒耐火物粒子は、アルミナ粒子、マグネシア粒子、アルミン酸マグネシウムスピネル粒子、ジルコニア粒子、もしくはドロマ粒子、またはそれらのいずれかの組み合わせを含み、
(i)少なくとも0.5%の酸化カルシウム添加剤であって、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(ii)少なくとも5.0%の低酸化マグネシアであって、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iii)少なくとも0.25%の酸化カルシウム添加剤および少なくとも5.0%の低酸化マグネシアであって、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iv)少なくとも0.25%の二酸化チタン
のうちの1つまたは複数と、を含み、
さらに、前記耐火組成物の総質量に対するパーセントで、
少なくとも80.0%のアルミナと、
3.0%までのシリカと、
0.5%までの酸化鉄(III)と、
0.5~5.0%の酸化カルシウムと、
少なくとも0.1%のマグネシアと、
1.0%までのアルカリ酸化物と、
15.0%までの二酸化チタンと、
を含む、耐火組成物。 - 前記耐火組成物の総質量に対するパーセントで、
少なくとも50.0%の粗粒耐火物粒子と、
少なくとも25.0%の低酸化マグネシアの微粒耐火物粒子と、を含む、請求項1に記載の耐火組成物。 - 前記耐火組成物の総質量に対するパーセントで、0.25%~15.0%の二酸化チタンを含む、請求項1に記載の耐火組成物。
- 前記耐火組成物の総質量に対するパーセントで、90.0%~99.0%の合計されたアルミナおよびチタン二酸化物を含む、請求項1に記載の耐火組成物。
- 前記耐火組成物の総質量に対するパーセントで、25.0%~55.0%の低酸化マグネシアの、微粒耐火物粒子を含む、請求項1に記載の耐火組成物。
- 前記耐火組成物の総質量に対するパーセントで、少なくとも80.0%のアルミナ粒子を含む、請求項1に記載の耐火組成物。
- 前記耐火組成物の総質量に対するパーセントで、
少なくとも150マイクロメートル(+100メッシュ)の粒径を有する少なくとも20.0%の粗粒耐火物粒子であって、当該粗粒耐火物粒子は、アルミナ粒子、マグネシア粒子、アルミン酸マグネシウムスピネル粒子、ジルコニア粒子、もしくはドロマ粒子、またはそれらのいずれかの組み合わせを含み、
少なくとも0.25%の二酸化チタンと、
さらに、
(i)少なくとも1.5%の酸化カルシウム添加剤、または
(ii)少なくとも5.0%の低酸化マグネシアで、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、または
(iii)少なくとも0.25%の酸化カルシウム添加剤および少なくとも5.0%の低酸化マグネシアで、150マイクロメートルより小さい(-100メッシュ)粒径を有する微粒耐火物粒子、
のうちの1つまたは複数と、を含む、請求項1に記載の耐火組成物。 - 溶融金属用容器の溶融接触表面の少なくとも一部に請求項1に記載の前記耐火組成物を形成することを含む溶融金属用容器において単回使用ワークライニングを形成するための方法であって、前記耐火組成物が、スプレー、吹き付け、ショットクリーチング、振動、キャスティング、こて塗り、もしくは前記耐火組成物から形成される予備成形された耐火物形状の配置、またはそれらのいずれかの組み合わせによって形成される、方法。
- 請求項1に記載の前記耐火組成物から形成される溶融金属用容器のための単回使用ワークライニングであって、
前記粗粒耐火物粒子を含む耐火物相と、
前記低酸化マグネシアの、微粒耐火物粒子を少なくとも部分的に置き換える鉄または鋼を含み、前記耐火物相の前記粗粒耐火物粒子を濡らし、かつ前記ワークライニングを浸潤する金属相と、を含む、ワークライニング。 - 溶融金属用容器であって、
底および前記底から延びる側面と、
前記溶融金属用容器の前記底および前記側面の少なくとも一部の上に形成された、請求項9に記載の前記単回使用のワークライニングと、を備える、溶融金属用容器。
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EP3749474A1 (en) | 2020-12-16 |
CA3088205A1 (en) | 2019-08-15 |
AR114359A1 (es) | 2020-08-26 |
US20210002176A1 (en) | 2021-01-07 |
CN110128118A (zh) | 2019-08-16 |
US11746053B2 (en) | 2023-09-05 |
TW201936542A (zh) | 2019-09-16 |
MX2020008329A (es) | 2020-09-21 |
CN110128118B (zh) | 2023-02-28 |
BR112020015497A2 (pt) | 2020-12-08 |
WO2019156845A1 (en) | 2019-08-15 |
KR20200118802A (ko) | 2020-10-16 |
KR102649884B1 (ko) | 2024-03-21 |
BR112020015497B1 (pt) | 2024-01-30 |
EP3749474A4 (en) | 2022-01-19 |
JP2021513498A (ja) | 2021-05-27 |
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