JPH01294582A - Carbon-containing castable refractory - Google Patents
Carbon-containing castable refractoryInfo
- Publication number
- JPH01294582A JPH01294582A JP63124683A JP12468388A JPH01294582A JP H01294582 A JPH01294582 A JP H01294582A JP 63124683 A JP63124683 A JP 63124683A JP 12468388 A JP12468388 A JP 12468388A JP H01294582 A JPH01294582 A JP H01294582A
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- carbon
- weight
- parts
- boron carbide
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 title claims description 24
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 12
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 238000004898 kneading Methods 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims description 14
- 239000011823 monolithic refractory Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 11
- 238000007254 oxidation reaction Methods 0.000 abstract description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 239000011819 refractory material Substances 0.000 abstract description 4
- 229910052582 BN Inorganic materials 0.000 abstract description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910021383 artificial graphite Inorganic materials 0.000 abstract description 2
- 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 abstract description 2
- 239000000395 magnesium oxide Substances 0.000 abstract description 2
- 229910052863 mullite Inorganic materials 0.000 abstract description 2
- 230000009257 reactivity Effects 0.000 abstract description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011029 spinel Substances 0.000 abstract description 2
- 229910052596 spinel Inorganic materials 0.000 abstract description 2
- 229910052845 zircon Inorganic materials 0.000 abstract description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003575 carbonaceous material Substances 0.000 abstract 3
- 239000003082 abrasive agent Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000000843 powder Substances 0.000 description 7
- 239000002893 slag Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052810 boron oxide Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000013003 hot bending Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
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
−材として好適なものに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a carbon-containing monolithic refractory, particularly one suitable as a mud material or a kneader material.
（従来の技術〕
炭素原料を含む不定形耐火物は各種の溶融全屈容器等に
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。(Prior art) Monolithic refractories containing carbon raw materials are widely used in various melting vessels, etc., and exhibit excellent corrosion resistance against chemical attack by hot metal, molten steel, slag, etc. This is because carbon itself In particular, it is difficult to get wet with slag, which prevents slag from penetrating into 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。However, carbon oxidizes very easily in the presence of atmospheric oxygen. This oxidation causes the carbon-containing monolithic refractory to lose its excellent properties.
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。Therefore, in order to improve the durability of this type of refractory, it is necessary to prevent oxidation of carbon.
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, an object of the present invention is to provide a carbon-containing monolithic refractory that is excellent in oxidation resistance and hot strength, and has excellent durability.
〔課題を解決するための手段］
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のうちの少なくとも一
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。[Means for Solving the Problem] In accordance with the above-mentioned objective, the present inventor conducted various studies to develop a carbon-containing monolithic refractory that exhibits both oxidation resistance and hot strength properties, and found that among Al and Si, The inventors have discovered that a carbon-containing monolithic refractory prepared by adding at least one type of metal powder and boron carbide and kneading them together with an organic binder has excellent oxidation resistance and hot strength, and has 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０．３〜５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, in the present invention, 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 metals Al and Si, and 0.3 to 5 parts by weight of boron carbide are kneaded together with an organic binder. The present invention provides a carbon-containing monolithic refractory made of carbon-containing monolithic refractories.
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 refractory raw materials 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。Further, as the carbon raw material, in addition to natural graphite such as earthy graphite and scaly graphite, 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。The amount of these carbon raw materials used is preferably 3 to 30 parts by weight.
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。If the carbon raw material is less than 3 parts by weight, the property of carbon being difficult to wet with molten steel slag will not be fully exhibited, and the refractory as a whole will easily wet with slag, resulting in insufficient slag resistance. Moreover, when it exceeds 30 parts by weight, the strength decreases.
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０．３〜５重量部が好ましい。０．
３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 one 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 mentioned above, the blending ratio of boron carbide is preferably 0.3 to 5 parts by weight. 0.
If it is less than 3 parts by weight, the effect of adding it will be small, and if it exceeds 5 parts by weight, it will have oxidation resistance but its hot strength will decrease and its durability will decrease.
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。The reason why the amount of the metal powder selected from Al and Si is set to 1 to 7 parts by weight is that if it is less than 1 part by weight, the effect of adding it will be small, and if it exceeds 7 parts by weight, the corrosion resistance will decrease. be.
前記を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 binder include tar, pitch, phenol resin, and furan resin.
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−材として使用に供することができる。The carbon-containing monolithic refractory of the present invention is obtained by mixing a particle size-adjusted refractory raw material, the carbon raw material, the boron carbide, and the metal powder in a predetermined ratio, adding the binder to the mixture, and kneading the mixture. This can be packed into 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, refractory raw material, carbon, etc. by heating. Furthermore, a part of the surface of the boron carbide powder becomes boron oxide due to the oxygen contained in the pores of the refractory, which promotes sintering of the refractory raw material and forms a dense and strong connective tissue. Furthermore, in the use of refractories, boron carbide oxidizes to become boron oxide.
A highly viscous melt made of metal powder oxides and refractory raw materials is formed to coat the refractory surface and prevent carbon oxidation.
次に本発明の実施例につき説明する。 Next, examples 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、１
００ｋｇ／ｃイの成形圧で４０Ｘ４０Ｘ１６０ｍｍに成
形して５００°Ｃで５時間ベーキングした。得られた不
定形耐火物ニーグー材の特性を第１表に示す。本発明品
は比較例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 blended tar was added to the formulation shown in Table 1 (numbers in the table indicate parts by weight), and the resulting material was kneaded.
It was molded into a size of 40 x 40 x 160 mm using a molding pressure of 00 kg/cm and baked at 500°C for 5 hours. Table 1 shows the properties of the obtained monolithic refractory Nigu material. It can be seen that the product of the present invention has better oxidation resistance and better hot bending strength than the comparative example.
第１表
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、１
００ｋｇ／ ｃｆの成形圧で４０Ｘ４０Ｘ１６０ｍｍに
成形して５００°Ｃ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例に比し、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。Table 1 Example 2゜ 23 parts by weight of blended tar was added to the formulation shown in Table 2 (numbers indicate parts by weight), and the resulting material was kneaded with 1
It was molded into a size of 40x40x160mm using a molding pressure of 00kg/cf and baked at 500°C for 5 hours. The characteristics of the obtained monolithic refractory mud material and hot injection repair material were
Shown in the table. It can be seen that the product of the present invention has better oxidation resistance and hot bending strength than the comparative example.
第 ２ 表
〔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。Table 2 [Effects of the Invention] According to the present invention, it is possible to provide a carbon-containing monolithic refractory that is excellent in oxidation resistance and hot strength, and has excellent durability.
出願人 川 崎 炉 材 株式会社Applicant: Kawasaki Rozai Co., Ltd.
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０．３〜５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) 60 to 97 parts by weight of a refractory raw material, 3 to 30 parts by weight of a carbon raw material, and 1 to 7 parts of at least one of the metals Al and Si.
1. A carbon-containing monolithic refractory characterized by kneading parts by weight and 0.3 to 5 parts by weight of boron carbide with an organic binder.
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 true JPH01294582A (en) | 1989-11-28 |
| JP2673893B2 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) |
Cited By (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 |
| US8003557B2 (en) | 2008-06-13 | 2011-08-23 | Saint-Gobain Ceramics & Plastics, Inc. | Volume-change resistant silicon oxy-nitride or silicon oxy-nitride and silicon nitride bonded silicon carbide refractory |
| CN102674862A (en) * | 2012-05-25 | 2012-09-19 | 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 |
Citations (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 |
| JPS6311578A (en) * | 1986-07-01 | 1988-01-19 | 川崎炉材株式会社 | Blast furnace tap hole sealing material |
-
1988
- 1988-05-20 JP JP63124683A patent/JP2673893B2/en not_active Expired - Lifetime
Patent Citations (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 |
| JPS6311578A (en) * | 1986-07-01 | 1988-01-19 | 川崎炉材株式会社 | Blast furnace tap hole sealing material |
Cited By (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 |
| US8003557B2 (en) | 2008-06-13 | 2011-08-23 | Saint-Gobain Ceramics & Plastics, Inc. | Volume-change resistant silicon oxy-nitride or silicon oxy-nitride and silicon nitride bonded silicon carbide refractory |
| CN102674862A (en) * | 2012-05-25 | 2012-09-19 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2673893B2 (en) | 1997-11-05 |
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