JP2574681B2 - Blast furnace taphole plugging material - Google Patents
Blast furnace taphole plugging materialInfo
- Publication number
- JP2574681B2 JP2574681B2 JP32622087A JP32622087A JP2574681B2 JP 2574681 B2 JP2574681 B2 JP 2574681B2 JP 32622087 A JP32622087 A JP 32622087A JP 32622087 A JP32622087 A JP 32622087A JP 2574681 B2 JP2574681 B2 JP 2574681B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- plugging material
- blast furnace
- resistance
- amount
- 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
Links
- 239000000463 material Substances 0.000 title claims description 39
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 13
- 239000003575 carbonaceous material Substances 0.000 claims description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 12
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052627 muscovite Inorganic materials 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 8
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- WHRZCXAVMTUTDD-UHFFFAOYSA-N 1h-furo[2,3-d]pyrimidin-2-one Chemical compound N1C(=O)N=C2OC=CC2=C1 WHRZCXAVMTUTDD-UHFFFAOYSA-N 0.000 claims description 4
- 235000006173 Larrea tridentata Nutrition 0.000 claims description 4
- 244000073231 Larrea tridentata Species 0.000 claims description 4
- 229960002126 creosote Drugs 0.000 claims description 4
- 239000002893 slag Substances 0.000 description 11
- 238000010079 rubber tapping Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011335 coal coke Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、高炉出銑口の閉塞材に関する。Description: TECHNICAL FIELD The present invention relates to a plugging material for a blast furnace taphole.
従来の技術及びその問題点 近年高炉の大型化、操業条件の苛酷化に伴い、出銑口
閉塞材の溶銑及び溶滓に対する耐食性（耐滓性）、耐熱
性、耐摩耗性等の向上が強く望まれている。特に耐滓性
能が低いと、出銑後半の出滓量の増加によつて、出銑口
の急激な損耗及び拡大が起こり、拡大した出銑口から溶
銑及び溶滓とともに多量の炉内ガスが漏出するため、出
銑が充分に行われないうちに出銑口を再び閉塞しなけれ
ばならない。この様な出銑時間の短縮化は、必然的に出
銑回数を増加させ、出銑操業効率及び作業性を著しく低
下させる。Conventional technology and its problems In recent years, as the size of blast furnaces has increased and the operating conditions have become more severe, the improvement in the corrosion resistance (slag resistance), heat resistance, wear resistance, etc. of tap hole plugging materials against hot metal and slag has been strong. Is desired. In particular, when the slag resistance is low, the tapping hole rapidly wears out and expands due to an increase in the amount of slag in the latter half of tapping, and a large amount of gas in the furnace together with hot metal and slag from the expanded taphole. In order to leak, the tap hole must be closed again before tapping is not sufficiently performed. Such a reduction in tapping time inevitably increases the tapping frequency, and significantly lowers tapping operation efficiency and workability.
上記の如き問題点を解消するために、アルミナ含量を
増加させた閉塞材が使用されている。アルミナの増加
は、耐滓性の向上に有効である。しかしながら、アルミ
ナ含量を増加させた閉塞材は、通常の温度及び時間では
焼結し難いという欠点を有している。従つて、該閉塞材
を、常法に従い、マツドガンで出銑口に充填し、次いで
乾燥並びに焼成しても、十分な強度が発現しない。In order to solve the above problems, a plugging material having an increased alumina content is used. Increasing the alumina is effective in improving the slag resistance. However, the plugging material having an increased alumina content has a disadvantage that it is difficult to sinter at ordinary temperature and time. Therefore, even if the plugging material is filled in a taphole with a mat gun in accordance with a conventional method, and then dried and fired, sufficient strength is not exhibited.
また、炭化珪素、炭素材料等の含量を増加させた閉塞
材も使用されている。炭化珪素及び炭素材料の増量は、
耐滓性を向上させるには最適である。しかしながら、一
定量以上増量すると炭素材料がCOガス化する反応が増大
するため、粘土等の結合材の働きが弱まり、閉塞材の強
度及び耐滓性が低下する。Also, a plugging material having an increased content of silicon carbide, carbon material, or the like has been used. Increasing amounts of silicon carbide and carbon materials
Optimum for improving scum resistance. However, if the amount is increased beyond a certain amount, the reaction of carbonizing the carbon material into CO gas increases, so that the function of the binder such as clay is weakened, and the strength and scum resistance of the plugging material are reduced.
問題点を解決するための手段 本発明者は、上記の如き従来技術の問題点を解消すべ
く、鋭意研究を重ねた結果、炭素材料、炭化珪素、アル
ミナ材料等に白雲母を加えてなる特定組成の閉塞材原料
に、特定の液状有機粘結剤を添加することによつて、炭
化材料のCOガス化反応が抑制され、優れた耐滓性及び強
度を有する高炉出銑口閉塞材が得られることを見出し、
本発明を完成した。Means for Solving the Problems The inventor of the present invention has conducted intensive studies in order to solve the above-mentioned problems of the prior art, and as a result, has been found that a specific composition obtained by adding muscovite to a carbon material, silicon carbide, alumina material, or the like. By adding a specific liquid organic binder to the plugging material raw material of the composition, the CO gasification reaction of the carbonized material is suppressed, and a blast furnace taphole plug with excellent slag resistance and strength is obtained. To be able to
The present invention has been completed.
即ち本発明は、（ａ）炭素材料60〜80重量％、炭化珪
素５〜15重量％、カーボンブラツク４〜15重量％、白雲
母４〜８重量％及びAl2O3−SiO2系耐火骨材５〜20重量
％からなる閉塞材原料100重量部及び（ｂ）フエノール
樹脂60〜90重量％と脱晶アントラセン油及び／又はクレ
オソート油10〜４重量％とからなる液状有機粘結剤15〜
20重量部を含有する高炉出銑口閉塞材に係る。That is, the present invention is, (a) the carbon material 60 to 80 wt% silicon carbide 5-15 wt%, carbon black 4 to 15 wt%, 4-8 wt% muscovite and Al 2 O 3 -SiO 2 -based refractory aggregate Organic binder 15 comprising 100 parts by weight of a plugging material raw material composed of 5 to 20% by weight of a material and (b) 60 to 90% by weight of a phenolic resin and 10 to 4% by weight of a crystallized anthracene oil and / or creosote oil. ~
It relates to a blast furnace tap hole plugging material containing 20 parts by weight.
本発明では、閉塞材原料として、炭素材料、炭化珪
素、カーボンブラツク、白雲母及びAl2O3−SiO2系耐火
骨材を使用する。In the present invention, a carbon material, silicon carbide, carbon black, muscovite and an Al 2 O 3 —SiO 2 refractory aggregate are used as the plugging material.
炭素材料としては、カーボンブラツクを除く通常のも
のがいずれも使用でき、例えば、土状黒鉛、鱗状黒鉛、
石炭コークス、石油コークス、電極粉砕物等を挙げるこ
とができる。炭素材料の配合量は、閉塞材原料中60〜80
重量％程度とするのがよい。60重量％未満では得られる
閉塞材の耐滓性が充分ではなく、80重量％を越えると得
られる閉塞材の強度が低下する。As the carbon material, any of ordinary materials except carbon black can be used, for example, earth graphite, scale graphite,
Coal coke, petroleum coke, electrode pulverized products, and the like can be given. The blending amount of the carbon material is 60 to 80
It is good to be about weight%. If the amount is less than 60% by weight, the obtained plug has insufficient slag resistance, and if it exceeds 80% by weight, the strength of the obtained plug decreases.
炭化珪素としても通常使用されているものを何れも使
用できる。炭化珪素の配合量は、閉塞材原料中５〜15重
量％程度とするのがよい。５重量％未満では、炭素系原
料が酸化して発生するCOガスによつて、炭化珪素が分解
し、発生するＣとSiO2との組織内充填度が低下し、耐滓
性及び強度が低下する。一方15重量％を越えると、発生
するSiO2の量が過多となり、耐滓性及び強度が低下す
る。As the silicon carbide, any of those commonly used can be used. The amount of silicon carbide is preferably about 5 to 15% by weight of the plugging material. If it is less than 5% by weight, silicon carbide is decomposed by the CO gas generated by oxidizing the carbon-based material, the degree of filling of the generated C and SiO 2 in the structure is reduced, and the scum resistance and strength are reduced. I do. On the other hand, if it exceeds 15% by weight, the amount of SiO 2 generated will be excessive, and the scum resistance and strength will decrease.
炭素材料及び炭化珪素の粒径は特に制限されず、適宜
選択すればよいが、例えば夫々3000〜500μｍ程度のも
の及び210μｍ以下程度のものを適量混合して使用すれ
ばよい。The particle diameters of the carbon material and silicon carbide are not particularly limited, and may be appropriately selected. For example, those having a particle size of about 3000 to 500 μm and those having a particle size of about 210 μm or less may be mixed and used in an appropriate amount.
カーボンブラツクは、閉塞材の可塑性、結合性及び耐
滓性の向上に有効である。カーボブラツクとしては特に
限定されず通常のものがいずれも使用でき、例えば、炭
化水素類を不完全燃焼させて製造されたチヤンネルブラ
ツク、フアーネスブラツク、アセチレンブラツク等を挙
げることができる。カーボンブラツクの粒径は特に制限
されず、適宜選択可能であるが、例えば平均粒径74μｍ
以下程度のものを使用するのが好ましい。74μｍを越え
ると、凝集力が低下し、出銑口への充填に適した可塑性
が得られない場合がある。カーボンブラツクの配合量
は、閉塞材原料中４〜15重量％とするのがよい。４重量
％未満では、カーボンブラツクの特性が充分発揮され
ず、一方15重量％を越えると、可塑性が大きくなり過
ぎ、出銑口への充填が困難となる。The carbon black is effective in improving the plasticity, bonding property and slag resistance of the plugging material. The carb black is not particularly limited, and any conventional carb black can be used. Examples thereof include a channel black, a furnace black, and an acetylene black produced by incompletely burning hydrocarbons. The particle size of the carbon black is not particularly limited and can be appropriately selected. For example, the average particle size is 74 μm.
It is preferable to use the following. If it exceeds 74 μm, the cohesive strength is reduced, and plasticity suitable for filling a taphole may not be obtained. The compounding amount of the carbon black is preferably 4 to 15% by weight of the plugging material. If it is less than 4% by weight, the properties of the carbon black will not be sufficiently exhibited, while if it exceeds 15% by weight, the plasticity will be too large and it will be difficult to fill the taphole.
白雲母は、化学組成式がKAl2（AlSi3O10）（OH）で示
され、Si、Al、Ｋが原子レベルで混合したような構造を
有するものであり、広い温度域で閉塞材の耐滓性及び強
度の向上に有用な役割を果たしている。Muscovite has a chemical composition represented by KAl 2 (AlSi 3 O 10 ) (OH), and has a structure in which Si, Al, and K are mixed at the atomic level. It plays a useful role in improving scum resistance and strength.
即ち主に900〜1200℃程度の温度域においては、白雲
母は粘度の高い溶融状態となり、炭素材料の酸化による
COガス発生を抑制し、閉塞材組織を緻密化する。更に主
として1500℃前後では、白雲母とCOガスとの反応により
炭化珪素びSiO2が生成し、それと同時にCOガスの発生に
伴なって副生するN2ガスと白雲母中のAlとが反応して窒
化アルミニウムが生成する。炭化珪素及びSiO2は閉塞材
組織の緻密化に有効であり、また窒化アルミニウムも閉
塞材の耐滓性及び強度の向上に有効である。以上のよう
に、白雲母は、広い温度域において、閉塞材の耐滓性及
び強度の向上に有用な化合物を連続的に閉塞材組織中に
供給する作用を有している。白雲母の粒径は平均粒径74
μｍ以下程度のものを使用するのが好ましい。74μｍを
越えると、炭素材料の酸化抑制効果が低下し、これによ
って閉塞材組織の緻密化が低下するので好ましくない。That is, mainly in the temperature range of about 900 to 1200 ° C., the muscovite is in a molten state having a high viscosity, and is oxidized by the carbon material.
Suppresses CO gas generation and densifies the closing material structure. Furthermore, mainly at around 1500 ° C, the reaction between muscovite and CO gas produces silicon carbide and SiO 2 , and at the same time, the N 2 gas by-produced with the generation of CO gas reacts with Al in the muscovite. To form aluminum nitride. Silicon carbide and SiO 2 are effective in densifying the structure of the plugging material, and aluminum nitride is also effective in improving the scum resistance and strength of the plugging material. As described above, muscovite has the effect of continuously supplying a compound useful for improving the scum resistance and strength of the plugging material into the plugging material structure in a wide temperature range. The average particle size of muscovite is 74
It is preferable to use one having a size of about μm or less. If it exceeds 74 μm, the effect of suppressing the oxidation of the carbon material is reduced, and the densification of the closing material structure is reduced, which is not preferable.
白雲母の配合量は閉塞材原料中４〜８重量％程度とす
るのがよい。４重量％未満では上記効果が充分発揮され
ず、一方８重量％を越えると、原料中のカリウム量が過
剰となり、Al2O3−SiO2系耐火骨材の融点を低下させ、
しかも上記効果が充分に発現されない。The amount of muscovite is preferably about 4 to 8% by weight of the raw material of the plugging material. If the content is less than 4% by weight, the above effect is not sufficiently exerted. On the other hand, if the content exceeds 8% by weight, the amount of potassium in the raw material becomes excessive, lowering the melting point of the Al 2 O 3 —SiO 2 refractory aggregate,
Moreover, the above effects are not sufficiently exhibited.
Al2O3−SiO2系耐火骨材は、主に1500℃以上程度の高
温域において、耐滓性の向上及び閉塞材成分の酸化抑制
に有効である。Al2O3−SiO2系耐火骨材としては、特に
制限がなく、通常のものがいずれも使用できるが、例え
ば、Al2O3含量10〜20％、SiO2含量75〜85％のもの、Al2
O3含量85〜95％、SiO2含量５〜10％のもの等が特に好ま
しい。The Al 2 O 3 —SiO 2 refractory aggregate is effective in improving the scum resistance and suppressing the oxidation of the plugging material component mainly in a high temperature range of about 1500 ° C. or more. The Al 2 O 3 —SiO 2 refractory aggregate is not particularly limited, and any of ordinary ones can be used. For example, those having an Al 2 O 3 content of 10 to 20% and an SiO 2 content of 75 to 85% , Al 2
Particularly preferred are those having an O 3 content of 85 to 95% and an SiO 2 content of 5 to 10%.
Al2O3−SiO2系耐火骨材の配合量は、閉塞材原料中５
〜20重量％とするのがよい。５重量％未満では、高温域
における閉塞材成分の酸化抑制に効果がなく、一方20重
量％を越えると、耐滓性が低下する。The amount of the Al 2 O 3 —SiO 2 refractory aggregate is 5
It is good to be ~ 20% by weight. If it is less than 5% by weight, there is no effect in suppressing the oxidation of the plugging material component in the high temperature range, while if it exceeds 20% by weight, the scum resistance decreases.
本発明では、バインダーとして、フエノール樹脂を主
成分とし、脱晶アントラセン油及び／又はクレオソート
油を溶媒とする液状有機粘結剤を使用する。フエノール
樹脂としては、レゾール型又はノボラツク型の公知のも
のが何れも使用できる。液状有機粘結剤中におけるフエ
ノール樹脂の配合量は60〜90重量％程度とするのがよ
い。60重量％未満では、耐滓性及び強度の向上が不充分
となる。一方90重量％を越えると、出銑口閉塞時に閉塞
材が急激に硬化するという問題点がある。尚、脱晶アン
トラセン油とクレオソート油とを併用する場合には、そ
の混合割合は特に制限されず適宜選択すればよい。In the present invention, a liquid organic binder containing a phenol resin as a main component and a decrystallized anthracene oil and / or creosote oil as a solvent is used as a binder. As the phenol resin, any of known resol type or novolak type resins can be used. The amount of the phenol resin in the liquid organic binder is preferably about 60 to 90% by weight. If it is less than 60% by weight, the improvement of the scum resistance and the strength becomes insufficient. On the other hand, if it exceeds 90% by weight, there is a problem that the plugging material is rapidly hardened when the taphole is blocked. When the decrystallized anthracene oil and the creosote oil are used in combination, the mixing ratio is not particularly limited and may be appropriately selected.
液状有機粘結剤の配合量は、閉塞材原料100重量部に
対し、15〜20重量部程度とするのがよい。15重量部未満
では、閉塞材原料が均一に混合されないためマツドガン
での押入れに必要な可塑性が得られない。20重量部を越
えると、流動性過多となって組織が不均一化し、耐滓性
及び強度が低下する。しかも出銑口を充分に閉塞できな
い。The amount of the liquid organic binder is preferably about 15 to 20 parts by weight based on 100 parts by weight of the plugging material. If the amount is less than 15 parts by weight, the plugging material is not uniformly mixed, so that the plasticity required for pushing with a mat gun cannot be obtained. If the amount exceeds 20 parts by weight, the fluidity becomes excessive, the structure becomes uneven, and the scum resistance and strength decrease. Moreover, the taphole cannot be sufficiently closed.
本発明閉塞材は、上記各原料の所定量を混練すること
によつて製造できる。The plugging material of the present invention can be produced by kneading a predetermined amount of each of the above raw materials.
本発明閉塞材を用いて高炉出銑口を閉塞するに当って
は、公知の方法が何れも採用できる。In closing the blast furnace taphole using the plugging material of the present invention, any known method can be adopted.
発明の効果 本発明高炉出銑口閉塞材は、溶銑及び溶滓に対して優
れた耐滓性、耐熱性、耐摩耗性及び強度を有するため、
出銑時間を延長して出銑回数を減らし、作業性を著しく
安定化させることができる。Effect of the Invention The blast furnace taphole plug material of the present invention has excellent slag resistance, heat resistance, abrasion resistance and strength for hot metal and slag,
The tapping time can be prolonged to reduce the number of taps, thereby significantly stabilizing workability.
実 施 例 以下に実施例を及び比較例を挙げ、本発明をより一層
明瞭なものとする。第１〜３表に、実施例で使用した原
料の化学成分等を示す。フエノール樹脂としては、粘度
16000cps、不揮発成分80％のものを用いた。EXAMPLES The following examples and comparative examples are given to further clarify the present invention. Tables 1 to 3 show the chemical components and the like of the raw materials used in the examples. As phenol resin, viscosity
16000 cps, 80% non-volatile components were used.
実施例１〜３及び比較例1,2 第４表に示す配合割合で、閉塞材原料100重量部にバ
インダーを添加し、よく混練し、本発明閉塞材（実施例
１〜３）及び従来の閉塞材（比較例1,2）を製造した。
得られた各種閉塞材を成形し、次いで1500℃で焼成した
後、性能試験に供した。結果を第４表に示す。 Examples 1 to 3 and Comparative Examples 1 and 2 At a mixing ratio shown in Table 4, a binder was added to 100 parts by weight of the plugging material and kneaded well, and the plugging material of the present invention (Examples 1 to 3) and the conventional Obstruction materials (Comparative Examples 1 and 2) were produced.
The obtained various plugging materials were molded, then fired at 1500 ° C., and then subjected to a performance test. The results are shown in Table 4.
線膨張収縮率は、JISR−2576に準じ、見掛気孔率はJI
SR−2205に準じ、圧縮強さはJISR−2575に準じて夫々測
定した。耐滓性は実施例１のものを100として表わし
た。The linear expansion and contraction rate conforms to JISR-2576, and the apparent porosity is JI
According to SR-2205, the compressive strength was measured according to JISR-2575, respectively. The scum resistance was expressed as 100 in Example 1.
第４表から、本発明品が、従来品に比べ、著しく優れ
た耐滓性及び強度を有することがわかる。 Table 4 shows that the product of the present invention has remarkably excellent scum resistance and strength as compared with the conventional product.
本発明品（実施例２）及び従来品（比較例１）をＡ社
大型高炉（4500m3）の出銑口の閉塞に使用したところ、
従来品の平均出銑時間が165〜217分、平均出銑時間195
分、平均出銑口長さ2950mmであつたのに対し、本発明品
は夫々205〜241分、231分、3230mmであり、従来のもの
より長く使用できた。また出銑回数も８回／日から6.2
回／日に減少し、作業性が向上した。When the product of the present invention (Example 2) and the conventional product (Comparative Example 1) were used for plugging a taphole of a large blast furnace (4500 m 3 ) of Company A,
Average tapping time of conventional products is 165 to 217 minutes, average tapping time is 195
While the average taphole length was 2950 mm, the product of the present invention was 205-241 minutes, 231 minutes, and 3230 mm, respectively, and could be used longer than conventional ones. The tapping frequency is from 8 times / day to 6.2.
The number of times per day decreased, and workability improved.
Claims (1)
〜15重量％、カーボンブラツク４〜15重量％、白雲母４
〜８重量％及びAl2O3−SiO2系耐火骨材５〜20重量％か
らなる閉塞材原料100重量部及び（ｂ）フエノール樹脂6
0〜90重量％と脱晶アントラセン油及び／又はクレオソ
ート油10〜40重量％とからなる液状有機粘結剤15〜20重
量部を含有する高炉出銑口閉塞材。(1) 60% to 80% by weight of a carbon material, silicon carbide 5
~ 15% by weight, carbon black 4 ~ 15% by weight, muscovite 4
100 parts by weight of a plugging material consisting of 8% by weight and 5-20% by weight of Al 2 O 3 —SiO 2 refractory aggregate, and (b) phenol resin 6
A blast furnace taphole plug material containing 15 to 20 parts by weight of a liquid organic binder comprising 0 to 90% by weight and 10 to 40% by weight of a crystallized anthracene oil and / or creosote oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32622087A JP2574681B2 (en) | 1987-12-23 | 1987-12-23 | Blast furnace taphole plugging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32622087A JP2574681B2 (en) | 1987-12-23 | 1987-12-23 | Blast furnace taphole plugging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01168804A JPH01168804A (en) | 1989-07-04 |
| JP2574681B2 true JP2574681B2 (en) | 1997-01-22 |
Family
ID=18185330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32622087A Expired - Lifetime JP2574681B2 (en) | 1987-12-23 | 1987-12-23 | Blast furnace taphole plugging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574681B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6887724B2 (en) * | 2017-02-08 | 2021-06-16 | 黒崎播磨株式会社 | Mud material for filling the tap hole of the blast furnace |
-
1987
- 1987-12-23 JP JP32622087A patent/JP2574681B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01168804A (en) | 1989-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8163666B2 (en) | Taphole mix | |
| JPS6050751B2 (en) | Occlusion material composition | |
| CN111704472B (en) | Additive for anhydrous stemming and preparation method thereof | |
| JP3519907B2 (en) | Closure material for molten metal tap hole | |
| JP2574681B2 (en) | Blast furnace taphole plugging material | |
| US2709659A (en) | Tap hole mix | |
| JPS6141862B2 (en) | ||
| US4272062A (en) | Blast furnace hearth | |
| JP3638081B2 (en) | Refractory material containing low carbonaceous carbon and method for producing the same | |
| JP2831311B2 (en) | Blast furnace taphole plugging material | |
| JP2017154940A (en) | Manufacturing method of mud material for blocking blast furnace tap pore | |
| JPH07115955B2 (en) | Blast furnace tap closure | |
| JPH11199337A (en) | Tapping hole-blocking material | |
| JP3287905B2 (en) | Mud wood | |
| JP7712567B2 (en) | Mud material | |
| JP2556416B2 (en) | Casting material for blast furnace gutter | |
| JPH07110793B2 (en) | Blast furnace tap closure | |
| JPH111373A (en) | Mud material for taphole | |
| JP2580204B2 (en) | Blast furnace taphole plugging material | |
| JP5123992B2 (en) | Blast furnace outlet closure material | |
| JP2539581B2 (en) | Blast furnace tap closure | |
| JPS6329719B2 (en) | ||
| JPH07188565A (en) | Binder for amorphous carbonaceous refractory and method for producing amorphous carbonaceous refractory using the same | |
| JPH11349384A (en) | Method for producing plugging material and binder composition for plugging material | |
| JP2592224B2 (en) | Closure material for molten metal tap hole |