JPH01208362A - Aluminum nitride oxide and silicon nitride-containing refractory brick for treating molten iron - Google Patents
Aluminum nitride oxide and silicon nitride-containing refractory brick for treating molten ironInfo
- Publication number
- JPH01208362A JPH01208362A JP63028739A JP2873988A JPH01208362A JP H01208362 A JPH01208362 A JP H01208362A JP 63028739 A JP63028739 A JP 63028739A JP 2873988 A JP2873988 A JP 2873988A JP H01208362 A JPH01208362 A JP H01208362A
- Authority
- JP
- Japan
- Prior art keywords
- refractory brick
- silicon
- silicon nitride
- weight
- graphite
- 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
- 239000011449 brick Substances 0.000 title claims abstract description 32
- 229910052581 Si3N4 Inorganic materials 0.000 title claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 26
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 title claims description 22
- 229910052742 iron Inorganic materials 0.000 title claims description 13
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 title abstract 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 16
- 238000004901 spalling Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005011 phenolic resin Substances 0.000 abstract description 2
- 229920001568 phenolic resin Polymers 0.000 abstract description 2
- 229910003465 moissanite Inorganic materials 0.000 abstract 3
- 239000002893 slag Substances 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 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
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は鋼の清浄化、鋼の高級化並びに鋼の製造コスト
の低減を目的に実施される溶鉄処理用混銑車等の耐火れ
んかに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to refractory bricks for use in molten iron processing mixers, etc., which are implemented for the purpose of cleaning steel, upgrading steel, and reducing steel manufacturing costs. .
し従来の技術］
現在、溶鉄処理用耐火れんかに対し炉命の延長並びに炉
材の低熱伝導率化による熱損失の減少、鉄皮の温度上昇
の抑制といった要求がある。[Prior Art] Currently, there are demands for refractory bricks for processing molten iron to extend the life of the furnace, reduce heat loss by lowering the thermal conductivity of the furnace material, and suppress the temperature rise of the iron shell.
溶鉄処理用混銑車の炉材はＡ１２ｏ３・５ｉＣ−Ｃ系不
焼成耐火れんがが主体である。この耐火れんかにおける
各原料の役割は、アルミナは耐食性の向上、黒鉛はスラ
グ浸潤防止並びに耐スポーリング性の向上、炭化珪素は
黒鉛の酸化防止を目的として使用される。また、場合に
よって、黒鉛の酸化防止並びに組織の強化を目的として
アルミニウム、シリコン等の金属または炭化硼素が添加
される。The furnace material of the mixed pig iron car for processing molten iron is mainly A12o3.5iC-C unfired refractory bricks. The role of each raw material in this refractory brick is that alumina is used to improve corrosion resistance, graphite is used to prevent slag infiltration and improve spalling resistance, and silicon carbide is used to prevent oxidation of graphite. In some cases, metals such as aluminum and silicon or boron carbide are added for the purpose of preventing oxidation of graphite and strengthening the structure.
Ａ １２０３・５ｉｎ２・Ｃ系不焼成耐火れんがは溶鉄
処理スラグに対し優れた耐食性をもち、また、耐スポー
リング性も優れた炉材である。しかし、最近の処理率の
増加に対し、更に高耐食性の炉材の開発が望まれ、マク
ネシアやジルコニアなどの耐火原料を添加したものが開
発されている。また、耐スポーリング性を改善するため
黒鉛量を多くする傾向にある。A 1203.5in2.C series unfired refractory brick has excellent corrosion resistance against molten iron processing slag, and is also a furnace material with excellent spalling resistance. However, with the recent increase in processing rates, there is a desire to develop furnace materials with even higher corrosion resistance, and materials to which refractory raw materials such as macnesia and zirconia are added have been developed. Additionally, there is a tendency to increase the amount of graphite in order to improve spalling resistance.
［発明が解決しようとする課題］
高耐食性を目的としたマグネシアの添加は炉材の熱膨張
を大きくし、耐スポーリング性を低下させるという欠点
がある。[Problems to be Solved by the Invention] Addition of magnesia for the purpose of high corrosion resistance has the drawback of increasing thermal expansion of the furnace material and reducing spalling resistance.
また、ジルコニアは体積安定性が悪く、安定した組織の
形成が難しく、ライムやマグネシアを添加した安定化ジ
ルコニアを使用した場合にも長期使用では未安定化し、
組織を劣化するといった問題がある。In addition, zirconia has poor volume stability, making it difficult to form a stable structure, and even when stabilized zirconia containing lime or magnesia is used, it becomes unstabilized after long-term use.
There is a problem of tissue deterioration.
また、耐スポーリング性向上のための黒鉛量の増加は熱
伝導率を高くし、熱損失、鉄皮の温度上昇といった意味
から好ましくない。Furthermore, increasing the amount of graphite to improve spalling resistance increases thermal conductivity, which is undesirable in terms of heat loss and an increase in the temperature of the iron skin.
［課題を解決するための手段］
本発明では、溶鉄処理用耐火れんかに窒化物系原料を使
用すると、該れんがの耐食性、耐酸化性を同時に向上さ
せることができることを見出した。[Means for Solving the Problems] In the present invention, it has been discovered that when a nitride-based raw material is used in a refractory brick for treating molten iron, the corrosion resistance and oxidation resistance of the brick can be simultaneously improved.
すなわち、本発明は酸窒化アルミニウム３〜５０重量％
、窒化珪素３〜１５重量％、炭化珪素０〜１２重量％、
黒鉛３〜７０重量％、アルミニウム、シリコン及び炭化
硼素から選択された１種または２種以上の成分を０〜６
重量％、及び残部がアルミナ系原料からなり且つ窒化珪
素と炭化珪素の合計量が１５重量％以下であることを特
徴とする溶鉄処理用酸窒化アルミニウム及び窒化珪素含
有耐火れんかに係る。That is, the present invention contains 3 to 50% by weight of aluminum oxynitride.
, silicon nitride 3-15% by weight, silicon carbide 0-12% by weight,
3 to 70% by weight of graphite, 0 to 6 of one or more components selected from aluminum, silicon, and boron carbide.
The present invention relates to an aluminum oxynitride and silicon nitride-containing refractory brick for molten iron treatment, characterized in that the balance is made of alumina-based raw materials and the total amount of silicon nitride and silicon carbide is 15% by weight or less.
［作 用］
本発明の溶鉄処理用酸窒化アルミニウム及び窒化珪素含
有耐火れんが（以下、本発明の耐火れんがと略称する）
では、酸窒化アルミニウムと窒化珪素を複合使用するこ
とによって耐食性、耐スポーリング性を大巾に向上させ
る。これは酸窒化アルミニウム及び窒化珪素の下記の特
性を活用したものである。[Function] Refractory brick containing aluminum oxynitride and silicon nitride for molten iron treatment of the present invention (hereinafter abbreviated as the refractory brick of the present invention)
By using aluminum oxynitride and silicon nitride in combination, corrosion resistance and spalling resistance are greatly improved. This utilizes the following characteristics of aluminum oxynitride and silicon nitride.
■酸窒化アルミニウムは酸化ナトリウム、酸化鉄などの
酸化作用をもつスラグと容易に反応し、アルミナとなっ
てスラグ中へ溶解する。その結果、スラグの溶融速度を
高くして粘性が大きくなるためスラグコートを容易とし
、耐食性を向上させる。■Aluminum oxynitride easily reacts with slag that has oxidizing properties such as sodium oxide and iron oxide, becoming alumina and dissolving into the slag. As a result, the melting rate of the slag increases and the viscosity increases, making slag coating easier and improving corrosion resistance.
■窒化珪素は炭化珪素に比し、熱膨張率が小さく、耐ス
ポーリング性を向上させる。■Silicon nitride has a lower coefficient of thermal expansion than silicon carbide and improves spalling resistance.
本発明の耐火れんがは酸窒化アルミニウム３〜５０重量
％、窒化珪素３〜１５重量％、炭化珪素０〜１２重量％
及び残部がアルミナ系原料からなり、更に、窒化珪素と
炭化珪素の合計量が１５重量％以下である。また、場合
によっては、アルミニウム、シリコン、炭化硼素等を６
重量％まで添加することもできる。The refractory brick of the present invention contains 3 to 50% by weight of aluminum oxynitride, 3 to 15% by weight of silicon nitride, and 0 to 12% by weight of silicon carbide.
and the remainder consists of alumina-based raw materials, and furthermore, the total amount of silicon nitride and silicon carbide is 15% by weight or less. In some cases, aluminum, silicon, boron carbide, etc.
It is also possible to add up to % by weight.
なお、酸窒化アルミニウム、窒化珪素、炭化珪素、黒鉛
、及びアルミニウム、シリコン及び炭化硼素等の成分の
使用量を上述の如く限定したのは次の理由による：
■酸窒化アルミニウムの使用量が３重量％未満であると
耐食性向上の効果がなく、５０重量％を超えると耐食性
が低下する；
■窒化珪素の使用量が３重量％未満であると耐スポーリ
ング性向上の効果が少なく、１５重量％を超えると耐食
性の低下が見られる：
■炭化珪素の使用量が窒化珪素の使用量との合計量で１
５重量％を超えると耐食性が低下する；■黒鉛の使用量
が３重量％より少ないと耐スポーリング性が著しく低下
し、２０重量％を超えると耐食性が低下する；
■アルミニウム、シリコン及び炭化硼素から選択された
１種または２種以上の成分の使用量が６重量％を超える
と耐食性が低下する。The usage amounts of aluminum oxynitride, silicon nitride, silicon carbide, graphite, and components such as aluminum, silicon, and boron carbide are limited as described above for the following reasons: ■The usage amount of aluminum oxynitride is 3 weight. If the amount of silicon nitride used is less than 3% by weight, there is no effect of improving corrosion resistance, and if it exceeds 50% by weight, the corrosion resistance decreases; If the amount of silicon nitride used is less than 3% by weight, there is little effect of improving spalling resistance, which is 15% by weight. A decrease in corrosion resistance is seen when the amount exceeds: ■The total amount of silicon carbide used and the amount of silicon nitride used is 1.
If the amount of graphite used is less than 3% by weight, the spalling resistance will be significantly reduced, and if it exceeds 20% by weight, the corrosion resistance will be reduced; ■Aluminum, silicon and boron carbide If the amount of one or more components selected from the following exceeds 6% by weight, corrosion resistance will decrease.
本発明の耐火れんがは、上述の酸窒化アルミニウムが酸
化ナトリウム、酸化鉄などの強力な酸化作用をもつスラ
グ成分によって容易に分解され、酸化アルミニウムとな
ってスラグ中へ溶出し、スラグの粘性を高める効果を利
用して粘性の高いスラグで稼働面をコーティングし、耐
食性の向上を図っている。In the refractory brick of the present invention, the above-mentioned aluminum oxynitride is easily decomposed by slag components having a strong oxidizing action such as sodium oxide and iron oxide, and becomes aluminum oxide and is eluted into the slag, increasing the viscosity of the slag. Taking advantage of this effect, the operating surfaces are coated with highly viscous slag to improve corrosion resistance.
また、同時に、本発明の耐火れんかに熱膨張率の小さい
窒化珪素を添加することによって耐スポーリング性の向
上も図り、耐火れんがのもつ基本特性の内、耐食性と耐
スポーリング性の２点を同時に改善するものである。At the same time, by adding silicon nitride, which has a small coefficient of thermal expansion, to the refractory brick of the present invention, the spalling resistance is improved, and two of the basic properties of the refractory brick are corrosion resistance and spalling resistance. At the same time, it improves the
本発明の耐火れんかに使用する酸窒化アルミニウムは■
粒、中粒または微粒のものである。The aluminum oxynitride used in the refractory brick of the present invention is ■
Grained, medium-grained or fine-grained.
黒鉛としては天然のグラファイト、鱗状黒鉛、土状黒５
９、人造黒鉛、石油コークス、カーボンブラック、電極
屑等を使用することができる。Graphite includes natural graphite, scaly graphite, and earthy black 5.
9. Artificial graphite, petroleum coke, carbon black, electrode scraps, etc. can be used.
窒化珪素はｌ ｔａｎ以下程度の粒度である。Silicon nitride has a particle size of about l tan or less.
炭化珪素は黒鉛の酸化防止な目的とするために使用する
もので微粉形態のものを使用することができる。Silicon carbide is used to prevent oxidation of graphite, and can be used in the form of fine powder.
アルミニウム、シリコン及び炭化硼素は黒鉛の酸化防止
並びに耐火れんがの組織の強化をもくていとして使用す
るもので、これらは１種または２種以上を併用すること
ができ、これらは０ 、１ ａｍ以下程度の粒度をもつ
形態が好ましい。Aluminum, silicon, and boron carbide are used to prevent oxidation of graphite and strengthen the structure of refractory bricks, and these can be used alone or in combination of two or more, and these can be used to prevent oxidation of graphite and strengthen the structure of refractory bricks. A form having a particle size of about 100% is preferable.
アルミナ系原料としては人造品または天然品を使用する
ことができ、粗粒、中粒または微粒のものを使用するこ
とが好ましい。As the alumina-based raw material, artificial products or natural products can be used, and it is preferable to use coarse, medium or fine grains.
本発明の耐火れんがは不焼成品であり、上述の配合をも
つ原料混合物を常法に従って混練成形し、次に、乾燥し
て耐火れんがとすることができる。The refractory brick of the present invention is an unfired product, and can be made into a refractory brick by kneading and molding the raw material mixture having the above-mentioned composition in accordance with a conventional method and then drying it.
［実 施 例］ 以下に実施例を挙げ、本発明を更に説明する。[Example] The present invention will be further explained with reference to Examples below.
夫ＭｊＬ
以下の第１表に記載する配合割合をもつ原料混合物にフ
ェノール樹脂を３重量％（外掛け）添加した混Ｍ物を１
０００ ｋｇ／ ０ｍ２の成形圧で２３０×１、 ］、
４ Ｘ ６５＋＊ｎに成形し、１５０℃で５時間乾燥
することにより本発明の耐火れんが（本発明品１〜４）
を得た。Husband MjL A mixture of 3% by weight (external) of phenolic resin is added to the raw material mixture having the blending ratio shown in Table 1 below.
230×1 at a molding pressure of 000 kg/0 m2, ],
The refractory bricks of the present invention (products 1 to 4 of the present invention) of the present invention are obtained by molding into a size of 4 x 65+*n and drying at 150°C for 5 hours.
I got it.
得られた耐火れんがの特性を第１表に併記する。The properties of the obtained refractory bricks are also listed in Table 1.
ル暫涯
以下の第１表に記載する配合割合をもつ原料混合物を実
施例と同様の方法で比穀品の耐火れんがを得た。Refractory bricks were obtained using raw material mixtures having the blending ratios shown in Table 1 below in the same manner as in the examples.
得られた耐火れんがの特性を第１表に併記する。The properties of the obtained refractory bricks are also listed in Table 1.
／
し発明の効果］
本発明の耐火れんがは酸窒化アルミニウムを添加するこ
とにより耐火れんがの耐食性を向上すると同時に窒化珪
素を添加することにより耐火れんがの耐スポーリング性
を向上したものであり、混銑車炉材及び溶鉄処理を目的
とする鍋等の溶鉄処理用耐火れんがとして満足できる性
能を具備するものである。/ Effect of the invention] The refractory brick of the present invention improves the corrosion resistance of the refractory brick by adding aluminum oxynitride, and at the same time improves the spalling resistance of the refractory brick by adding silicon nitride. It has satisfactory performance as a refractory brick for processing molten iron, such as car furnace materials and pots for processing molten iron.
また、窒化珪素添加による耐スポーリング性の向上は黒
鉛量の低減することを可能にし、窒化珪素自体のもつ低
熱伝導性という特性と相まって炉材の低熱伝導率化を可
能にするものである。Furthermore, the improvement in spalling resistance due to the addition of silicon nitride makes it possible to reduce the amount of graphite, which, in combination with the low thermal conductivity characteristic of silicon nitride itself, makes it possible to lower the thermal conductivity of the furnace material.
特許出願人 品川白煉瓦株式会社 同 上 株式会社神戸製鋼所Patent applicant Shinagawa White Brick Co., Ltd. Same as above Kobe Steel, Ltd.
Claims (1)
重量％、炭化珪素０〜１２重量％、黒鉛３〜７０重量％
、アルミニウム、シリコン及び炭化硼素から選択された
１種または２種以上の成分を０〜６重量％、及び残部が
アルミナ系原料からなり且つ窒化珪素と炭化珪素の合計
量が１５重量％以下であることを特徴とする溶鉄処理用
酸窒化アルミニウム及び窒化珪素含有耐火れんが。Aluminum oxynitride 3-50% by weight, silicon nitride 3-15%
Weight%, silicon carbide 0-12% by weight, graphite 3-70% by weight
, 0 to 6% by weight of one or more components selected from aluminum, silicon, and boron carbide, and the remainder is an alumina-based raw material, and the total amount of silicon nitride and silicon carbide is 15% by weight or less. A refractory brick containing aluminum oxynitride and silicon nitride for treating molten iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63028739A JPH01208362A (en) | 1988-02-12 | 1988-02-12 | Aluminum nitride oxide and silicon nitride-containing refractory brick for treating molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63028739A JPH01208362A (en) | 1988-02-12 | 1988-02-12 | Aluminum nitride oxide and silicon nitride-containing refractory brick for treating molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01208362A true JPH01208362A (en) | 1989-08-22 |
Family
ID=12256792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63028739A Pending JPH01208362A (en) | 1988-02-12 | 1988-02-12 | Aluminum nitride oxide and silicon nitride-containing refractory brick for treating molten iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01208362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018123726A1 (en) * | 2016-12-28 | 2018-07-05 | 黒崎播磨株式会社 | Brick for blast furnace hearths and blast furnace hearth using same, and method for producing brick for blast furnace hearths |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61101454A (en) * | 1984-10-23 | 1986-05-20 | 日本坩堝株式会社 | Aluminum oxynitride-containing refractories |
| JPS627671A (en) * | 1985-07-01 | 1987-01-14 | 日本坩堝株式会社 | Nozzle for steel continuous casting |
-
1988
- 1988-02-12 JP JP63028739A patent/JPH01208362A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61101454A (en) * | 1984-10-23 | 1986-05-20 | 日本坩堝株式会社 | Aluminum oxynitride-containing refractories |
| JPS627671A (en) * | 1985-07-01 | 1987-01-14 | 日本坩堝株式会社 | Nozzle for steel continuous casting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018123726A1 (en) * | 2016-12-28 | 2018-07-05 | 黒崎播磨株式会社 | Brick for blast furnace hearths and blast furnace hearth using same, and method for producing brick for blast furnace hearths |
| JPWO2018123726A1 (en) * | 2016-12-28 | 2019-10-31 | 黒崎播磨株式会社 | Brick for blast furnace hearth, blast furnace hearth using the same, and method for producing brick for blast furnace hearth |
| EP3564201A4 (en) * | 2016-12-28 | 2020-08-19 | Krosakiharima Corporation | Brick for blast furnace hearths and blast furnace hearth using same, and method for producing brick for blast furnace hearths |
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