JP2673893B2 - Carbon-containing amorphous refractory - Google Patents
Carbon-containing amorphous refractoryInfo
- Publication number
- JP2673893B2 JP2673893B2 JP63124683A JP12468388A JP2673893B2 JP 2673893 B2 JP2673893 B2 JP 2673893B2 JP 63124683 A JP63124683 A JP 63124683A JP 12468388 A JP12468388 A JP 12468388A JP 2673893 B2 JP2673893 B2 JP 2673893B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- weight
- parts
- refractory
- containing amorphous
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は炭素含有不定形耐火物、特にマッド材、ニー
ダー材として好適なものに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a carbon-containing amorphous refractory material, particularly a mud material and a kneader material.
炭素原料を含む不定形耐火物は各種の溶融金属容器等
に広く用いられ、溶銑、溶鋼、スラグ等の化学的侵食に
対して優れた耐食性を示す。これは炭素自身が特にスラ
グ対して濡れがたく、そのため耐火物内へのスラグの侵
入が抑えられることによる。An amorphous refractory containing a carbon raw material is widely used in various molten metal containers and the like, and exhibits excellent corrosion resistance against chemical corrosion of hot metal, molten steel, slag and the like. This is because carbon itself is particularly hard to wet the slag, which prevents the slag from entering the refractory.
しかしながら炭素は、雰囲気中の酸素の存在下できわ
めて容易に酸化する。この酸化は炭素含有不定形耐火物
の前述の優れた特性を失わしめる。このことからこの種
耐火物の耐用性を向上させるためには、炭素の酸化を防
止することが必要である。However, carbon oxidizes very easily in the presence of oxygen in the atmosphere. This oxidation destroys the above-mentioned excellent properties of carbon-containing amorphous refractories. Therefore, in order to improve the durability of this type of refractory material, it is necessary to prevent carbon oxidation.
そこで本発明は、耐酸化性及び熱間強度の点で優れ、
耐用性に優れた炭素含有不定形耐火物を提供することを
目的とする。Therefore, the present invention is excellent in terms of oxidation resistance and hot strength,
An object is to provide a carbon-containing amorphous refractory material having excellent durability.
本発明者は前記目的にしたがい耐酸化性と熱間強度の
特性を同時に発揮する炭素含有不定形耐火物を開発すべ
く種々検討した結果、Al及びSiのうち少なくとも一種の
金属粉末と炭化硼素を添加し、有機バインダとともに混
練した炭素含有不定形耐火物は、耐酸化性と熱間強度の
点で優れていることを見出し、本発明を完成した。The present inventors have conducted various studies to develop a carbon-containing amorphous refractory that simultaneously exhibits the properties of oxidation resistance and hot strength according to the above-mentioned object, and at least one metal powder of Al and Si and boron carbide are selected. The carbon-containing amorphous refractory added and kneaded with an organic binder was found to be excellent in oxidation resistance and hot strength, and completed the present invention.
すなわち本発明は、耐火原料60〜97重量部、炭素原料
３〜30重量部、金属Al及びSiのうち少なくとも一種を１
〜７重量部および炭化硼素１〜５重量部を有機バインダ
とともに混練してなる炭素含有不定形耐火物を提供する
ものである。That is, the present invention comprises 60 to 97 parts by weight of a refractory raw material, 3 to 30 parts by weight of a carbon raw material, and at least one of Al and Si.
-7 parts by weight and 1-5 parts by weight of boron carbide are kneaded together with an organic binder to provide an amorphous refractory material containing carbon.
本発明において使用できる耐火原料としては、アルミ
ナ、ムライト、マグネシア、スピネル、シリカ、ジルコ
ン等の酸化物のほか、炭化珪素、窒化珪素、窒化硼素等
の非酸化物を例示できる。Examples of the refractory raw material that can be used in the present invention include oxides such as alumina, mullite, magnesia, spinel, silica, and zircon, as well as non-oxides such as silicon carbide, silicon nitride, and boron nitride.
また、炭素原料としては、土状黒鉛、鱗状黒鉛等の天
然黒鉛のほか、電極屑、石油コークス、カーボンブラッ
ク等の人造黒鉛が使用可能である。As the carbon raw material, natural graphite such as earth graphite and scaly graphite, as well as artificial graphite such as electrode scrap, petroleum coke and carbon black can be used.
これら炭素原料の使用量は３〜30重量部が好ましい。
炭素原料が３重量部未満では、炭素の溶鋼スラグに対す
る濡れにくいという特性が十分発揮されず、耐火物全体
としてスラグに濡れやすくなり、耐スラグ性も不十分と
なる。また、30重量部をこえると強度が低下する。The amount of these carbon raw materials used is preferably 3 to 30 parts by weight.
If the amount of the carbon raw material is less than 3 parts by weight, the characteristic that carbon is difficult to wet the molten steel slag is not sufficiently exerted, and the refractory as a whole easily wets the slag, and the slag resistance becomes insufficient. Further, if it exceeds 30 parts by weight, the strength is reduced.
前記炭化硼素としては、研磨材として一般に使用され
ているものをいずれも使用でき、粒度は反応性及び分散
性の点から0.15mm以下が好ましい。炭化硼素の配合割合
は既述のとおり１〜５重量部が好ましい。１重量部未満
では添加する効果が少なく、また、５重量部をこえる
と、耐酸化性はあるが熱間強度が低下し耐用性が低下す
る。As the boron carbide, any of those commonly used as an abrasive can be used, and the particle size is preferably 0.15 mm or less from the viewpoint of reactivity and dispersibility. As described above, the blending ratio of boron carbide is preferably 1 to 5 parts by weight. If it is less than 1 part by weight, the effect of addition is small, and if it exceeds 5 parts by weight, it has oxidation resistance but lowers hot strength and durability.
また、Al、Siのうちから選ばれる前記金属粉末の使用
量を１〜７重量部とした理由は、１重量部未満では添加
する効果が少なく、７重量部をこえると耐食性が低下す
るからである。Further, the reason why the amount of the metal powder selected from Al and Si is 1 to 7 parts by weight is that the addition effect is small if it is less than 1 part by weight, and the corrosion resistance decreases if it exceeds 7 parts by weight. is there.
前記有機バインダとしては、タール、ピッチ、フェノ
ール樹脂、フラン樹脂などを例示できる。Examples of the organic binder include tar, pitch, phenol resin, furan resin and the like.
本発明炭素含有不定形耐火物は、粒度調整した耐火原
料、前記炭素原料、前記炭化硼素及び前記金属粉末を所
定割合で混合し、これに前記バインダを加えて混練して
得られ、要すれば、これをポリエチレン袋等に詰め、マ
ッド材、ニーダー材として使用に供することができる。The carbon-containing amorphous refractory of the present invention is obtained by mixing the refractory raw material having a particle size adjusted, the carbon raw material, the boron carbide and the metal powder in a predetermined ratio, kneading the mixture with the binder, and if necessary. It can be packed in a polyethylene bag or the like and used as a mud material or a kneader material.
本発明耐火物の微粉部分は加熱によって金属粉末と炭
化硼素及び耐火原料、炭素等と強固な結合を形成する。
また、炭化硼素粉末表面の一部は耐火物の気孔中に含ま
れる酸素によって酸化硼素となり、耐火原料の焼結を促
進し、緻密で強固な結合組織を形成する。さらに耐火物
の使用面において炭化硼素は酸化して、酸化硼素とな
り、金属粉末の酸化物および耐火原料等からなる粘性の
高い融液を形成して耐火物表面を被覆し、炭素の酸化を
防止する。The fine powder portion of the refractory of the present invention forms a strong bond with the metal powder, boron carbide, the refractory raw material, carbon, etc. by heating.
Further, a part of the surface of the boron carbide powder becomes boron oxide due to oxygen contained in the pores of the refractory material, which promotes sintering of the refractory raw material and forms a dense and strong bond structure. In addition, boron carbide oxidizes to form boron oxide on the surface of refractory use, forming a highly viscous melt composed of oxides of metal powder and refractory raw materials to coat the refractory surface and prevent carbon oxidation. To do.
次に本発明の実施例につき説明する。 Next, embodiments of the present invention will be described.
実施例1. 第１表に示す配合物（表中、数字は重量部を示す）に
調合タール26重量部を添加し、混練して得た材料を、10
0kg/cm2の成形圧で40×40×160mmに成形して500℃で５
時間ベーキングした。得られた不定形耐火物ニーダー材
の特性を第１表に示す。本発明品は比較的に比し耐酸化
性を有し、且つ、熱間曲げ強さに優れていることがわか
る。Example 1 26 parts by weight of compounding tar was added to the composition shown in Table 1 (in the table, the numbers indicate parts by weight), and the resulting material was kneaded to obtain 10 parts by weight.
Mold at 40 × 40 × 160 mm at a molding pressure of 0 kg / cm 2 and 5 at 500 ℃
Baking for hours. The properties of the obtained amorphous refractory kneader material are shown in Table 1. It can be seen that the product of the present invention is relatively resistant to oxidation and is excellent in hot bending strength.
実施例2. 第２表に示す配合物（表中、数字は重量部を示す）に
調合タール23重量部を添加し、混練して得た材料を、10
0kg/cm2の成形圧で40×40×160mmに成形して500℃で５
時間ベーキングした。得られた不定形耐火物マッド材及
び熱間投入補修材の特性を第２表に示す。この本発明品
は比較的比し、耐酸化性を有し且つ熱間曲げ強さに優れ
ていることがわかる。 Example 2 23 parts by weight of compounded tar was added to the composition shown in Table 2 (in the table, the numbers indicate parts by weight), and the resulting material was kneaded to obtain 10 parts by weight.
Mold at 40 × 40 × 160 mm at a molding pressure of 0 kg / cm 2 and 5 at 500 ℃
Baking for hours. Table 2 shows the characteristics of the obtained irregular refractory mud material and hot-filled repair material. It can be seen that this product of the present invention is relatively resistant to oxidation and excellent in hot bending strength.
〔発明の効果〕 本発明によると、耐酸化性及び熱間強度の点で優れ、
耐用性に優れた炭素含有不定形耐火物を提供することが
できる。 [Effect of the Invention] According to the present invention, it is excellent in terms of oxidation resistance and hot strength,
A carbon-containing amorphous refractory having excellent durability can be provided.
Claims (1)
量部、金属Al及びSiのうち少なくとも一種を１〜７重量
部および炭化硼素１〜５重量部を有機バインダとともに
混練してなることを特徴とする炭素含有不定形耐火物。1. Kneading 60 to 97 parts by weight of a refractory raw material, 3 to 30 parts by weight of a carbon raw material, 1 to 7 parts by weight of at least one of metal Al and Si and 1 to 5 parts by weight of boron carbide together with an organic binder. A carbon-containing amorphous refractory characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124683A JP2673893B2 (en) | 1988-05-20 | 1988-05-20 | Carbon-containing amorphous refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124683A JP2673893B2 (en) | 1988-05-20 | 1988-05-20 | Carbon-containing amorphous refractory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01294582A JPH01294582A (en) | 1989-11-28 |
| JP2673893B2 true JP2673893B2 (en) | 1997-11-05 |
Family
ID=14891490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63124683A Expired - Lifetime JP2673893B2 (en) | 1988-05-20 | 1988-05-20 | Carbon-containing amorphous refractory |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2673893B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100299459B1 (en) * | 1998-12-19 | 2001-09-12 | 홍상복 | Mlagnesia-Carbon Based Castable Having Superior Anti-Oxidation |
| EP2310339B1 (en) | 2008-06-13 | 2016-04-20 | Saint-Gobain Ceramics & Plastics Inc. | Volume-change resistant silicon oxynitride bonded silicon carbide - based product |
| CN102674862B (en) * | 2012-05-25 | 2013-06-26 | 无锡市南方耐材有限公司 | High-temperature antioxidation antifriction lubricant and preparation method thereof |
| CN108911764A (en) * | 2018-06-19 | 2018-11-30 | 佘春霞 | A kind of fast gravity die blast furnace crucibe repairing material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6086080A (en) * | 1983-10-17 | 1985-05-15 | 品川白煉瓦株式会社 | Carbon-containing basic castable refractories |
| JPH07110793B2 (en) * | 1986-07-01 | 1995-11-29 | 川崎炉材株式会社 | Blast furnace tap closure |
-
1988
- 1988-05-20 JP JP63124683A patent/JP2673893B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01294582A (en) | 1989-11-28 |
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