JP7247172B2 - 耐火性バッチ、当該バッチから不定形耐火セラミック製品を製造するための方法、当該方法によって得られる不定形耐火セラミック製品 - Google Patents
耐火性バッチ、当該バッチから不定形耐火セラミック製品を製造するための方法、当該方法によって得られる不定形耐火セラミック製品 Download PDFInfo
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Description
マグネシアをベースとする1つ又は複数の原料を含む基本成分;
1つ又は複数の炭素担体を含む炭素成分;
1つ又は複数の金属アルミニウム担体を含むアルミニウム成分;
水性結合剤;及び、
水100g当たり少なくとも15gの溶解度を有する、1つ又は複数の硫酸塩。
バッチを供給するステップ;
鋼を加工するための設備に溶鋼を受容するための容器を供給するステップ;
設備内で容器を使用する際に溶鋼と接触する容器の領域上に、バッチを鋳造するステップ;
当該領域上に鋳造されたバッチが、不定形耐火セラミック製品を形成するように、容器を加熱するステップ。
スラグ区域の領域における取鍋の内側輪郭のための鋳型を供給するステップ;
鋳型を取鍋内に、鋳型と取鍋との間に隙間が形成されるように配置するステップであって、当該隙間の境界を形成する鋳型の表面が、スラグ区域の領域における取鍋の内側輪郭に対応するステップ。
ペリクレース;
マグネシアスピネル;及び、
アルミニウムオキシカーバイド。
かさ密度:2.55g/cm3~2.70g/cm3;
開放多孔率:16体積%~22体積%;
冷間曲げ強さ:0.5MPa~5MPa;
冷間圧縮強さ:15MPa~40MPa;
熱間曲げ強さ(1400℃、還元雰囲気下):5MPa~8MPa;
熱間曲げ強さ(1500℃、還元雰囲気下):4MPa~7MPa。
焼結マグネシアから成る基本成分:82質量%;
微結晶グラファイトの形における炭素成分:5.5質量%;
AlSi合金の形におけるアルミニウム成分:3.8質量%;
水性結合剤:7質量%;
水溶性硫酸塩:0.5質量%;
マイクロシリカ:1質量%;及び、
分散剤:0.2質量%。
MgO:89.8質量%
Al2O3:6.6質量%
SiO2:2.3質量%
CaO:0.8質量%
Fe2O3:0.5質量%
かさ密度:2.64g/cm3
開放多孔率:14体積%
冷間曲げ強さ:8MPa
冷間圧縮強さ:34MPa。
かさ密度:2.60g/cm3
開放多孔率:20体積%
冷間曲げ強さ:2MPa
冷間圧縮強さ:20MPa。
かさ密度:2.57g/cm3
開放多孔率:21体積%
冷間曲げ強さ:3MPa
冷間圧縮強さ:20MPa
熱間曲げ強さ(1400℃、還元雰囲気下):6.5MPa;
熱間曲げ強さ(1500℃、還元雰囲気下):5.5MPa。
焼結マグネシアから成る基本成分:81質量%;
微結晶グラファイト及びカーボンブラックの形における炭素成分:7質量%;
AlSi合金の形におけるアルミニウム成分:4質量%;
金属ケイ素:0.5質量%;
水性結合剤:7.2質量%;
水溶性硫酸塩:0.3質量%。
焼結マグネシアから成る基本成分:82質量%;
微結晶グラファイト及びカーボンブラックの形における炭素成分:6.5質量%;
金属ケイ素:2質量%;
マイクロシリカ:2.5質量%;
水性結合剤:7質量%。
まず、炉が設置され、炉の耐火性ライニングは、壁側が、石材から形成された。後のスラグ区域では、製品V1及びV2の石材から、ライニングが形成された。耐火性ライニングは、シリンダ形の炉空間を囲んでおり、当該炉空間には、適切なシリンダ形の金属インサート(60kgの鋼)が配置された。当該金属インサートは、ライニングの外側周囲に環状に誘導されたコイルを通じて、1700℃まで加熱され、溶融された。溶鋼の上に、スラグ粉末(表2に示された化学組成を有する3kgのスラグ粉末で、CaO/SiO2の比は0.7)が加えられ、当該スラグ粉末は溶融し、腐食性のスラグを有するスラグ区域を形成した。スラグは、当該スラグ区域で、石材V1及びV2と反応し、それによって、これらに腐食によって損傷を与えた。これらの石材は、全部で約4時間、スラグによって腐食を受け、当該スラグは、それぞれ30分後、60分後及び90分後に、それぞれ5質量%のホタル石によって、並びに、120分後、150分後、180分後及び210分後には、それぞれ10%のホタル石によって補充された。次に、ライニングが取り外され、石材V1及びV2において、腐食の程度、すなわち摩耗深さ及び摩耗面積が試験された。
Claims (7)
- 以下の成分:
1つ又は複数のマグネシアベースの原料を含む基本成分;
1つ又は複数の炭素担体を含む炭素成分;
1つ又は複数の金属アルミニウムの担体を含むアルミニウム成分;
水性結合剤;
硫酸アルミニウム、
を含み、
前記硫酸アルミニウムが、0.05質量%から1.0質量%までの範囲の割合で存在している耐火性バッチ。 - 前記基本成分が、少なくとも90質量%の割合でマグネシアから構成されている、請求項1に記載のバッチ。
- 前記基本成分が、以下のマグネシアベースの原料:焼結マグネシア又は溶融マグネシア、の内の1つ又は複数から構成されている、請求項1または2に記載のバッチ。
- 前記基本成分が、少なくとも75質量%の割合で存在している、請求項1から3のいずれか一項に記載のバッチ。
- 前記アルミニウム成分が、以下の金属アルミニウム担体:金属アルミニウム又は少なくとも1つのアルミニウムを含む金属合金、の内の1つ又は複数から構成されている、請求項1から4のいずれか一項に記載のバッチ。
- 前記水性結合剤が、4.0質量%から15.0質量%までの範囲の割合で存在している、請求項1から5のいずれか一項に記載のバッチ。
- 不定形耐火セラミック製品を製造するための方法であって、以下のステップ:
請求項1から6のいずれか一項に記載のバッチを供給するステップ;
鋼を加工するための設備に溶鋼を受容するための容器を供給するステップ;
前記設備内で前記容器を使用する際に溶鋼と接触する前記容器の領域上に、前記バッチを鋳造するステップ;
前記領域上に鋳造されたバッチが、不定形耐火セラミック製品を形成するように、前記容器を加熱するステップ、
を含む方法。
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PCT/EP2018/080585 WO2019120737A1 (de) | 2017-12-19 | 2018-11-08 | Feuerfester versatz, ein verfahren zur herstellung eines ungeformten feuerfesten keramischen erzeugnisses aus dem versatz sowie ein durch das verfahren erhaltenes ungeformtes feuerfestes keramisches erzeugnis |
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