WO2006009128A1 - Coal tar blend and plug for outlet for molten metal - Google Patents

Coal tar blend and plug for outlet for molten metal Download PDF

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Publication number
WO2006009128A1
WO2006009128A1 PCT/JP2005/013204 JP2005013204W WO2006009128A1 WO 2006009128 A1 WO2006009128 A1 WO 2006009128A1 JP 2005013204 W JP2005013204 W JP 2005013204W WO 2006009128 A1 WO2006009128 A1 WO 2006009128A1
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WIPO (PCT)
Prior art keywords
coal tar
tar
binder
blended
present
Prior art date
Application number
PCT/JP2005/013204
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French (fr)
Japanese (ja)
Inventor
Ryozo Shimizu
Hiromi Okamoto
Fumie Ikeda
Fumitaka Murakami
Noriko Sakai
Original Assignee
Jfe Chemical Corporation
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Publication date
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Publication of WO2006009128A1 publication Critical patent/WO2006009128A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/44—Consumable closure means, i.e. closure means being used only once
    • B22D41/46—Refractory plugging masses
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/005—Working-up tar by mixing two or more coaltar fractions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/02—Removal of water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/04—Working-up tar by distillation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/04—Working-up tar by distillation
    • C10C1/16—Winning of pitch

Definitions

  • the present invention relates to a blended call tar and a plugging material for a molten metal outlet (hereinafter also referred to as a “mad material”). More specifically, a blended coal tar having excellent storage stability and easy viscosity control, a binder comprising the blended coal tar, and a mat material using the binder. About.
  • dehydrated coal tar obtained by dewatering coal tar is used as a blast furnace outlet or electric furnace outlet, as a material binder, or as a binder for various paints. It is used.
  • Conventional representative mat materials are stone, chamo
  • Japanese Laid-Open Patent Publication No. 10- 3 2 4 5 7 6 proposes to use anhydrous coal tar having a large amount of fixed carbon as these tar binders. .
  • binders are inherently required to have a viscosity range suitable for different applications, those having adaptability to the widest possible viscosity range are preferred.
  • anhydrous coal tar has a narrow range of viscosity and it is not easy to adjust the viscosity, so the application range must be narrowed.
  • An object of the present invention is to provide a blended coal tar that has excellent storage stability that does not change its viscosity and the like even after long-term storage, and that can be easily adjusted in viscosity according to the application.
  • Another object of the present invention is to provide a mat material and a binder thereof in which the structure is not altered or cracks are generated. Disclosure of the invention
  • the present invention is a blended coal tar comprising an anhydrous coal tar distilled oil and soft pitch and having a naphthalene content of 1.5% by mass or less.
  • the distilled oil is a fraction of 230 to 2800 ° C in terms of normal pressure.
  • these blended coal tars preferably have a viscosity at 60 ° C. of 10 00 to 2400 m Pa ⁇ s.
  • the content ratio of any of the above-mentioned cocoons / letter noles is 0.1% by mass or less.
  • this application is at least one compounded coal tar as described above.
  • the present invention of a binder is also provided.
  • the present application also provides an invention of a plug for a molten metal outlet comprising at least one of the above binder and a refractory material.
  • the present invention also relates to a mixture of a soft pitch obtained by tar distillation and a distilled oil obtained by tar distillation, wherein the naphthaline content is 1.5 3 ⁇ 4% by weight or less. It is also a characteristic synthetic turnole.
  • FIG. 1 is a graph for explaining the relationship between the ratio of the viscosity of distilled oil contained in the blended coal tar of the present invention at 230 to 2800 ° C. and the viscosity.
  • the present inventors first examined the deterioration over time of a mat material using a conventional anhydrous cold tar as a binder.
  • Conventional anhydrous coal turret is only what dehydrated cornoletal obtained by dehydrating cornolenorenoles prior to fractional distillation of cornolenorenoles is called anhydrous cornolenorenoles. Accordingly, there are considerable amounts of various volatile components remaining in the anhydrous coal tar, and these volatile components dissipate over time during storage or use. It has been found that this causes a change in the properties of the tool itself. As a result, it was found that in the mat material using the anhydrous coal tar as a binder, the structure was coarsened with time and eventually cracks occurred.
  • naphthalene has a high vapor pressure and sublimation properties, and about 10% by mass in a conventional anhydrous coal tar. Since this accounted for the above, it was found that the impact was particularly strong. Therefore, in order to develop coal tar that does not impair the characteristics of a conventional binder and also has stability over time, the present inventors started to control the amount of naphthaline. In addition to these two characteristics, the inventors have arrived at the invention of a blended call tar that also has applicability in a wide viscosity range.
  • the blended methanol of the present invention is a mixture of soft pitch obtained by distillation of anhydrous coal tar and distilled oil obtained by distillation of anhydrous rutile, and has a naphthalene content of 1 . 5 mass 0/0 or less of is also of the o
  • the above-mentioned soft pitch is the residue of the kettle remaining after the anhydrous coal tar from which the coal tar has been dehydrated is further distilled.
  • the soft pitch of the present invention is a fraction up to about 28 ° C. It is preferable that the residue is distilled off.
  • soft pitches have a softening point of less than 70 ° C and are a mixture of many complex i3 ⁇ 4 boiling components and free carbon with a boiling point of more than 3500 ° C. 0
  • These soft pitches preferably have a softening point in the range of about 35 to 45 ° C. Note that the temperatures of the distillation temperature and the like in this application are all under normal pressure unless otherwise specified. Therefore, in the case of applying vacuum distillation, pressure distillation and / or azeotropic distillation, etc., the technical scope of the present invention can be known by atmospheric pressure conversion.
  • the distilled oil is a fraction obtained by distillation of the above-mentioned water cono lenenoles, and is preferably a fraction up to about 2880 ° C.
  • the blended coal tar of the present invention has a naphthalene content of 1.5% by mass or less. From the viewpoint of industrial production efficiency, among the distillate oils, it is 2300 to 2800 ° C. It is particularly preferred to use a distillate of fractions (called distilled oil, washing oil, absorption oil, etc.) 0 As a method for obtaining the blended coal tar of the present invention, as described above, anhydrous coal tar containing light components such as naphthalene is distilled to distill off light components such as naphthalene.
  • a method is preferred in which distillation is continued to separate anhydrous coal tar into distilled oil and soft pitch, and then the distilled oil and soft pitch are mixed (synthesized). Both the distilled oil and soft pitch used at this time have a low naphthalene content, and the resulting blended coal tar has a naphthalene content of
  • the blended coal tar of the present invention may be called a synthetic tar because it is artificially mixed to prepare one tar.
  • the method of excluding naphthalene is not limited to the above method.
  • coal tar, anhydrous coal tar or the obtained distilled oil can be used to bring naphthalene to a specified concentration by means such as solvent extraction, sublimation and Z or water ⁇ , S, i, etc. It is also possible to exclude them. Thereafter, the soft pitch and the steam oil may be mixed.
  • the naphthalene content of the blended coal tar is 1.5% by mass or less, the change in properties over time can be suppressed.
  • Another feature of the present invention is that the blended coal tar contains the soft powder.
  • the preferred viscosity of the blended coal tar is in the range of 100 to 2400 mPa ⁇ s at 60 ° C.
  • Such adjustment of the viscosity can be achieved by combining the soft pitch (A) and the distilled oil (B) in a mass ratio of
  • the viscosity at 60 ° C. obtained by mixing at a ratio of 2 6 to 10 is 100 m Pa.s or more. In this case, the adhesiveness as a binder and the amount of fixed carbon are sufficient, so that the durability is not lowered.
  • the viscosity at 60 ° C. is 2400 mPa ⁇ s or less, the amount of coal tar necessary for filling can be suppressed and sufficient durability can be obtained.
  • Fig. 1 shows the relationship between the content of distilled oil (2 '30 to 2800 ° C fraction) in the blended coal tar and the viscosity of the blended coal tar. As shown in the drawing, the viscosity of the blended coal tar of the present invention can be arbitrarily and easily changed according to the purpose by changing the content of the distilled oil.
  • the phenol content of the blended coal tar of the present invention is preferably 0 ⁇ 1% by mass or less.
  • the phenol content in the blended coal tar of the present invention is 0.1 mass.
  • the method of making it 0 or less is the same as the above adjustment of the naphthalene content.
  • the binder of the present invention is composed of at least one of the above blended coal tars of the present invention.
  • the binder may be the blended coal tar of the present invention itself, but may further contain an auxiliary agent for the binder.
  • the binder aid include synthetic resins, natural resins, and various adhesives.
  • the binder of the present invention can sufficiently exhibit the binder performance only with the blended coal tar, it is usually composed only of the blended coal tar.
  • the binder of the present invention is used as a binder or impregnating material such as a mud material, a refractory, a carbon material, a special carbon material, or various paints. Useful for many applications. The following describes an example of the use as a binder of a mat.
  • the mat material of the present invention is composed of the needle of the present invention and a refractory material.
  • a refractory material any conventionally known refractory material for MAC materials can be used.
  • refractory materials such as rholite, chamomile, and aluminum, and refractory materials made of carbonaceous material, silicon carbide, silicon nitride, and clay can be used.
  • the Ma material of the present invention is the top
  • the characteristic of the above-mentioned mat material is that it is excellent in the storage stability of the obtained mat material, like the blended coal tar of the present invention.
  • This anhydrous coal tar corresponds to the anhydrous coal tar described in JP-A No. 10-32 45 57 6 and has a viscosity of 2880 mPa ⁇ s at 60 ° C, fixed.
  • the carbon content was 32%, the moisture content was 0.1%, and the naphthalene content was 10.9%.
  • Example 2 Using the anhydrous coal tar of Comparative Example 1 (Binder of Comparative Example), a comparative mat material was prepared in the same manner as Example 2. The composition is also shown in Table 4.
  • the blended coal tar of the present invention is a phenol that is also an environmental pollutant in naphthalene compared to the conventional anhydrous rutar. There are very few volatile components.
  • the blended coal tar and the binder of the present invention have little change in viscosity even after long-term storage, and are excellent in storage stability. Furthermore, the mud material using the binder of the present invention comprising the blended coal tar is also stable over time.
  • Table 4 show that the comparative example mat material equivalent to the conventional product has a hardness increase rate.
  • Blended coal tar Content Content Soft pitch Distilled oil mPa-s Blended coal tar Content Content Soft pitch Distilled oil mPa-s
  • Viscosity is measured at 60 ° C immediately after production.
  • the content of naphthalene and phenol is the content immediately after production.
  • Viscosity is measured at 60 ° C.
  • the present invention it is possible to provide a blended coal tar having excellent storage stability and easy viscosity adjustment according to the application, and various binders composed of the blended coal tar.
  • various binders composed of the blended coal tar.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Ceramic Products (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A coal tar blend which comprises: an oil obtained by the distillation of anhydrous coal tar; and a soft pitch, and which has a naphthalene content of 1.5 mass% or lower. The coal tar blend combines long-term stability with suitability for wide-range viscosity regulation while retaining the intact binder properties of conventional ones. It is hence suitable for use as various binders. A plug for molten-metal outlets which employs the coal tar blend as a binder also has long-term stability and is less apt to suffer structure alteration or cracking.

Description

配合コ ールタ ルおよび溶融金属の出湯口 の閉塞材 Sealing agent for blended coal tar and molten metal outlet
技術分野 Technical field
本発明は、 配合コ ールタ ールおよび溶融金属の出湯口 の閉塞 材 （以下、 マッ ド材と も呼ぶ） に関する。 よ り 具体的には、 保 管安定性に優れかつ粘度の明調節が容易である配合コ ールター ル 、 および該配合コールタールからなるバイ ンダー 、 さ らには 該バイ ンダーを用いたマツ ド材に関する。  The present invention relates to a blended call tar and a plugging material for a molten metal outlet (hereinafter also referred to as a “mad material”). More specifically, a blended coal tar having excellent storage stability and easy viscosity control, a binder comprising the blended coal tar, and a mat material using the binder. About.
食 背景技術  Background art
従来、 コールタ ールを脱水処理して得られる無水 ―ルタ一 ルは、 高炉出湯口や電気炉出湯口などのマッ ド、材のノ ィ ンダー と して、 あるいは各種塗料のバイ ンダ一などと して使用されて レ、る。 従来の代表的なマ ツ ド材は 、 ロ ー石、 シャモ 卜 ヽ ァル Conventionally, dehydrated coal tar obtained by dewatering coal tar is used as a blast furnace outlet or electric furnace outlet, as a material binder, or as a binder for various paints. It is used. Conventional representative mat materials are stone, chamo
、 、ナな どの耐火原料と、 炭素質材料、 炭化珪素 、 窒化珪素およ び粘土などからなる耐火材料に、 無水コールタ ―ルをバイ ンダ と して加えて製造されてきた。 It has been manufactured by adding anhydrous coal tar as a binder to a refractory material such as,, and na and a refractory material composed of carbonaceous material, silicon carbide, silicon nitride and clay.
特開平 1 0 — 3 2 4 5 7 6号公報では、 これらのタ一ル系バ ィ ンダ一と して、 固定炭素量が多い無水コ ールタ一ルを使用す る こ と が提案されている。  Japanese Laid-Open Patent Publication No. 10- 3 2 4 5 7 6 proposes to use anhydrous coal tar having a large amount of fixed carbon as these tar binders. .
しかし、 該公報の無水コールタールをマッ ド、材のノ ィ ンダー と して使用 した場合には、 マツ ド材の組織が経時的に粗雑化し 最終的には亀裂が発生するなどの問題が起き る た 、 従,来の ノ、、、水コ ールタ ール自体も、 保管中に粘度が上昇するなど、 経時 的に変質してしま う こ と も判明 した。 したがつて、 実際にバイ ンダ一と して使用する際には、 操作上の不都合も発生する。 こ のよ う に、 従来の無水コールタールは、 マッ ド材の製造当初こ そ優れたバイ ンダー性能を発揮する ものの、 経時変化を起こす ために優れたバイ ンダ一とは言い切れない。 However, when the anhydrous coal tar disclosed in this publication is used as a material for a mud or material, problems occur such as the structure of the mat material becomes coarse over time and eventually cracks occur. As a result, it was also found that the conventional water tar and the water call tar itself may deteriorate over time, such as the viscosity increasing during storage. Therefore, actually buy There are also operational inconveniences when used as a printer. Thus, although conventional anhydrous coal tar exhibits excellent binder performance at the beginning of the manufacture of the mud, it cannot be said that it is an excellent binder because it causes changes over time.
また、 本来、 バイ ンダー類は用途の違いに適した粘度範囲が 要求されるため、 できるだけ広い粘度範囲への適応性を有する ものが好ま しい。 しかし、 上記の無水コールタールは粘度の範 囲が狭く 、 粘度調節も容易でないため、 応用範囲が狭く なら ざ るを得ない。  In addition, since binders are inherently required to have a viscosity range suitable for different applications, those having adaptability to the widest possible viscosity range are preferred. However, the above-mentioned anhydrous coal tar has a narrow range of viscosity and it is not easy to adjust the viscosity, so the application range must be narrowed.
本発明の目 的は、 長期保管してもその粘度などが変化しない 保管安定性に優れ、 さ らに用途に応じて粘度調整が容易である 配合コールタールを提供するこ とである。 また、 本発明の他の 目的は、 組織が変質した り亀裂が発生した り しないマツ ド材と そのバイ ンダーを提供する こ とである。 発明の開示  An object of the present invention is to provide a blended coal tar that has excellent storage stability that does not change its viscosity and the like even after long-term storage, and that can be easily adjusted in viscosity according to the application. Another object of the present invention is to provide a mat material and a binder thereof in which the structure is not altered or cracks are generated. Disclosure of the invention
上記目的は以下の本発明によって達成される。 すなわち、 本 発明は、 無水コールタールの蒸留油と軟ピツチからな り 、 かつ ナフタ リ ン含有率が 1 . 5質量％以下の配合コールタールであ る。  The above object is achieved by the present invention described below. That is, the present invention is a blended coal tar comprising an anhydrous coal tar distilled oil and soft pitch and having a naphthalene content of 1.5% by mass or less.
なお、 この配合コールタールは、 該蒸留油が、 常圧換算で 2 3 0〜 2 8 0 °Cの留分であるこ とが好ま しい。  In this blended coal tar, it is preferable that the distilled oil is a fraction of 230 to 2800 ° C in terms of normal pressure.
また、 これらの配合コールタールは、 6 0 °Cにおける粘度が、 1 0 0〜 2 4 0 0 m P a · s であるこ とが好ま しい。  Further, these blended coal tars preferably have a viscosity at 60 ° C. of 10 00 to 2400 m Pa · s.
さ らに、 上記のいずれの酉己合コ一/レターノレも、 フエ ノ ーノレ含 有率が 0 . 1 質量％以下である こ とが好ま しい。  Furthermore, it is preferable that the content ratio of any of the above-mentioned cocoons / letter noles is 0.1% by mass or less.
また、 本願は、 上述の少なく と も 1種の配合コールタールか らなるバイ ンダ一の発明も提供する。 In addition, this application is at least one compounded coal tar as described above. The present invention of a binder is also provided.
さ らに、 本願は、 上記の少なく と も 1種の該バイ ンダーと耐 火材からなる溶融金属の出湯口の閉塞材の発明も提供する。  Further, the present application also provides an invention of a plug for a molten metal outlet comprising at least one of the above binder and a refractory material.
また、 本発明は、 タール蒸留によって得られた軟ピッチと、 タール蒸留によって得られた蒸留油との混合物であって、 ナフ タ リ ン含有量が 1 . 5 ¾量％以下である こ と を特徴とする合成 ターノレでもある。  The present invention also relates to a mixture of a soft pitch obtained by tar distillation and a distilled oil obtained by tar distillation, wherein the naphthaline content is 1.5 ¾% by weight or less. It is also a characteristic synthetic turnole.
図面の簡単な説明 Brief Description of Drawings
図 1 は、 本発明の配合コールタ ール中に含有される 2 3 0 〜 2 8 0 °Cの蒸留油の割合と粘度と の関係を説明する図である。  FIG. 1 is a graph for explaining the relationship between the ratio of the viscosity of distilled oil contained in the blended coal tar of the present invention at 230 to 2800 ° C. and the viscosity.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
次に発明を実施するための最良の形態を挙げて本発明を さ らに詳しく説明する。  Next, the present invention will be described in more detail with reference to the best mode for carrying out the invention.
本発明者らは、 従来の無水コ ールタ ールをバイ ンダーと した マツ ド材の経時劣化についてまず検討した。 従来の無水コール ターノレは、 コ ーノレターノレ の分留に先立ち、 コ ーノレターノレをカロ熱 脱水 した脱水コーノレタールを無水コーノレターノレと称したもの に過ぎない。 したがって、 該無水コールタールには種々の揮発 成分がかな り の量残存してお り 、 このよ う な揮発分が保管中あ るいは使用中に経時的に逸散するため、 該無水コ ールタ ール自 体の性状変化を招く こ とが判明 した。 その結果と して、 該無水 コールタ ールをバイ ンダーとするマツ ド材では、 組織が経時的 に粗雑化し、 最終的には亀裂が発生する こ と を突き止めた。 こ のよ う な揮発成分の中でも特にナフタ リ ンは蒸気圧が高く 昇 華性もあ り 、 しかも従来の無水コールタ ール中に約 1 0質量％ 以上も占めるため、特にその影響が強いこ と も判った。 そこで、 従来のバイ ンダーと しての特性を損な う こ となく 、 かつ経時安 定性を兼備したコールタールの開発のため、 本発明者らはナフ タ リ ン量の制御から着手し、 こ の 2特性に加えて広い粘度範囲 での適応可能性をも兼備した配合コ ールタ ールの発明に到達 した。 The present inventors first examined the deterioration over time of a mat material using a conventional anhydrous cold tar as a binder. Conventional anhydrous coal turret is only what dehydrated cornoletal obtained by dehydrating cornolenorenoles prior to fractional distillation of cornolenorenoles is called anhydrous cornolenorenoles. Accordingly, there are considerable amounts of various volatile components remaining in the anhydrous coal tar, and these volatile components dissipate over time during storage or use. It has been found that this causes a change in the properties of the tool itself. As a result, it was found that in the mat material using the anhydrous coal tar as a binder, the structure was coarsened with time and eventually cracks occurred. Among these volatile components, especially naphthalene has a high vapor pressure and sublimation properties, and about 10% by mass in a conventional anhydrous coal tar. Since this accounted for the above, it was found that the impact was particularly strong. Therefore, in order to develop coal tar that does not impair the characteristics of a conventional binder and also has stability over time, the present inventors started to control the amount of naphthaline. In addition to these two characteristics, the inventors have arrived at the invention of a blended call tar that also has applicability in a wide viscosity range.
本発明の配合コ ーノレタ一ルは 、 無水コールタールの蒸留によ つて得られた軟ピッチと 、 無水 一ルタールの蒸留によって得 られた蒸留油との混合物であ り ナフタ リ ンの含有率が 1 . 5 質量0 /0以下のも のである o The blended methanol of the present invention is a mixture of soft pitch obtained by distillation of anhydrous coal tar and distilled oil obtained by distillation of anhydrous rutile, and has a naphthalene content of 1 . 5 mass 0/0 or less of is also of the o
で上記軟ピッチと は、 コ一ルタールを脱水した無水コー ルタ一ルを、 さ らに蒸留した後に残つた釜残である 0 本発明の 軟ピッチは、 約 2 8 0 °Cまでの留分を留去した釜残である こ と が好ま しい。 通常、 こ ( よ う な軟ピッチは、 軟化点が 7 0 °C未 満のものであ り 、 沸点が 3 5 0 °c以上の多く の複雑な i¾沸 成 分と遊離炭素と の混合物である 0 これらの軟ピッチは軟化点が 約 3 5 〜 4 5 °Cの範囲にある こ とが好ま しい。 なお 、 本願の蒸 留温度等の温度は、 特に断り のない限り 、 全て常圧下での値で 示した 。 したがって、 減圧 留 加圧蒸留および/または共沸 蒸留などを適用する場合であつて ¾、 常圧換算によつて本発明 の技術範囲を知る こ とができ る o  The above-mentioned soft pitch is the residue of the kettle remaining after the anhydrous coal tar from which the coal tar has been dehydrated is further distilled. 0 The soft pitch of the present invention is a fraction up to about 28 ° C. It is preferable that the residue is distilled off. Usually, such soft pitches have a softening point of less than 70 ° C and are a mixture of many complex i¾ boiling components and free carbon with a boiling point of more than 3500 ° C. 0 These soft pitches preferably have a softening point in the range of about 35 to 45 ° C. Note that the temperatures of the distillation temperature and the like in this application are all under normal pressure unless otherwise specified. Therefore, in the case of applying vacuum distillation, pressure distillation and / or azeotropic distillation, etc., the technical scope of the present invention can be known by atmospheric pressure conversion.
また 、 該蒸留油と は 上記の 水コ一ノレターノレの蒸留によつ て得られた留分であ り 約 2 8 0 °cまでの留分であるのが好ま しい。 本発明の配合コ一ルタールのナフタ リ ン含有率は 1 . 5 質量％以下であ り 、 ェ業的な生産効率からすれば、 該蒸留油の 中でも 、 2 3 0〜 2 8 0 °Cの留分 (蒸留油、 洗浄油 、 吸収油な どと称される） の蒸留油を用いるのが特に好ま しい 0 本発明の配合コールタールを得る方法と しては、 前記の通り ナフタ リ ンな どの軽質分を含有したままの無水コールタール を蒸留してナフタ リ ンなどの軽質分を留去し、 さ らに蒸留を続 けて無水コールタールを蒸留油と軟ピッチに分けた後、 該蒸留 油と軟ピッチと を混合 （合成） する方法が好ま しい。 こ の際使 用する蒸留油 と軟ピツチのいずれもがナフタ リ ン含有量が低 いこ と力ゝら、 得られる配合コールタールのナフタ リ ン含有率はFurther, the distilled oil is a fraction obtained by distillation of the above-mentioned water cono lenenoles, and is preferably a fraction up to about 2880 ° C. The blended coal tar of the present invention has a naphthalene content of 1.5% by mass or less. From the viewpoint of industrial production efficiency, among the distillate oils, it is 2300 to 2800 ° C. It is particularly preferred to use a distillate of fractions (called distilled oil, washing oil, absorption oil, etc.) 0 As a method for obtaining the blended coal tar of the present invention, as described above, anhydrous coal tar containing light components such as naphthalene is distilled to distill off light components such as naphthalene. A method is preferred in which distillation is continued to separate anhydrous coal tar into distilled oil and soft pitch, and then the distilled oil and soft pitch are mixed (synthesized). Both the distilled oil and soft pitch used at this time have a low naphthalene content, and the resulting blended coal tar has a naphthalene content of
1 - 5質量％以下と なる。 このよ う に人為的に混合して 一ル タールを調製するため本発明の配合コールタールは合成タ一 ルと呼んでもよい。 1-5% by mass or less. In this way, the blended coal tar of the present invention may be called a synthetic tar because it is artificially mixed to prepare one tar.
しかし 、 ナフタ リ ンを除外する方法は、 上記の方法に限られ る ものではない。 例えば、 コールタール、 無水コールタ一ルあ るいは得られた該蒸留油から、 溶媒抽出、 昇華および Zまたは 水 ^ ^、S、、i留な どの手段によ り ナフタ リ ンを規定濃度になる ま で除外するこ と も可能である。 その後に、 該軟ピッチと該蒸 ¾ 油を混合しても よい。  However, the method of excluding naphthalene is not limited to the above method. For example, coal tar, anhydrous coal tar or the obtained distilled oil can be used to bring naphthalene to a specified concentration by means such as solvent extraction, sublimation and Z or water ^^, S, i, etc. It is also possible to exclude them. Thereafter, the soft pitch and the steam oil may be mixed.
いずれの方法にせよ、 配合コールタールのナフタ リ ン含有率 が 1 . 5 質量％以下とすれば、 経時的な該性状変化は抑制でき る。  In any method, if the naphthalene content of the blended coal tar is 1.5% by mass or less, the change in properties over time can be suppressed.
本発明のも う 1 つの特徴は、 該配合コールタールが前記軟ピ Another feature of the present invention is that the blended coal tar contains the soft powder.
-yチと 留油と を混合して得られるもののため、 軟ピッチと蒸 留油 と の混合比を変更する こ と で広い粘度範囲に適応可能な 点でめる 。 該配合コールタールめ好ま しい粘度は 6 0 °Cにおい て 1 0 0 〜 2 4 0 0 m P a · s の範囲である。 このよ う な粘度 の調整は前記軟ピッチ （ A ) と蒸留油 （ B ) と を質量比で A ：-y Because it is obtained by mixing distillate and distillate, it can be applied to a wide range of viscosity by changing the mixing ratio of soft pitch and distillate. The preferred viscosity of the blended coal tar is in the range of 100 to 2400 mPa · s at 60 ° C. Such adjustment of the viscosity can be achieved by combining the soft pitch (A) and the distilled oil (B) in a mass ratio of
B 7 4 〜 9 0 ： 2 6 〜 1 0 の比率で混合するこ と によって得 られる 前記 6 0 °Cにおける粘度が 1 0 0 m P a . s 以上であ る と、 バイ ンダーと しての粘着性と 固定炭素量が充分であるた め、 耐用性が低下する こ と もない。 一方、 前記 6 0 °Cにおける 粘度が 2 4 0 0 m P a · s 以下の方が、 充填に必要なコールタ ール量が抑えられる上に、 充分な耐用性が得られるからである。 参考のために配合コ ールタ ール中の蒸留油 （ 2 '3 0 〜 2 8 0 °C 留分） の含有率と配合コールタ ールの粘度との関係を図 1 に示 す。 図示する よ う に本発明の配合コ ールタ ールはその蒸留油の 含有量を変更するこ と によって、 その粘度を目的に応じて任意 にかつ容易に変更するこ とができ る。 B 74 4 to 90: The viscosity at 60 ° C. obtained by mixing at a ratio of 2 6 to 10 is 100 m Pa.s or more. In this case, the adhesiveness as a binder and the amount of fixed carbon are sufficient, so that the durability is not lowered. On the other hand, when the viscosity at 60 ° C. is 2400 mPa · s or less, the amount of coal tar necessary for filling can be suppressed and sufficient durability can be obtained. For reference, Fig. 1 shows the relationship between the content of distilled oil (2 '30 to 2800 ° C fraction) in the blended coal tar and the viscosity of the blended coal tar. As shown in the drawing, the viscosity of the blended coal tar of the present invention can be arbitrarily and easily changed according to the purpose by changing the content of the distilled oil.
従来の無水コールタールは、 ナフタ リ ン油などの軽質分が除 去されておらず、 主と してナフ タ リ ンを通常 8 〜 1 5質量。 /0含 有しているが、 フエノールも約 0 . 5 〜 1 . 5質量％含有して いる。 こ のフ ノ ールも蒸散する と環境汚染物質と して問題と なる。 Conventional anhydrous coal tar does not remove light components such as naphthalene oil, and is usually 8 to 15 masses of naphthaline. / 0 has free, but phenol also contains about 0.5 to 1.5 wt%. If this fungus is also transpiration, it becomes a problem as an environmental pollutant.
そこで、 本発明の配合コールタ ールのフエノ ール含有率は 0 · 1 質量％以下であるこ とが好ま しい。 本発明の配合コールター ル中のフエノ ール含有率を 0 . 1 質量。 /0以下にする方法は、 上 記のナフタ リ ン含有率の調整と 同様である。 Therefore, the phenol content of the blended coal tar of the present invention is preferably 0 · 1% by mass or less. The phenol content in the blended coal tar of the present invention is 0.1 mass. The method of making it 0 or less is the same as the above adjustment of the naphthalene content.
本発明のパイ ンダ一は、 上記本発明の配合コ ールタールの少 なく と も 1種からなる。 該バイ ンダーは、 本発明の配合コール タールその も のであってもよいが、 他にバイ ンダ一の助剤を含 有しても よい。 該バイ ンダー助剤と しては、 合成樹脂、 天然樹 脂、 各種接着剤などを例示でき る。 しかし、 本発明のバイ ンダ 一は、 該配合コ ールタ ールのみで充分にパイ ンダー性能を発揮 でき るので、 通常、 該配合コールタールのみから構成される。  The binder of the present invention is composed of at least one of the above blended coal tars of the present invention. The binder may be the blended coal tar of the present invention itself, but may further contain an auxiliary agent for the binder. Examples of the binder aid include synthetic resins, natural resins, and various adhesives. However, since the binder of the present invention can sufficiently exhibit the binder performance only with the blended coal tar, it is usually composed only of the blended coal tar.
本発明のバイ ンダーは、 マッ ド材、 耐火物、 炭素材料、 特殊 炭素材料あるいは各種塗料な どのパイ ンダーや含浸材と して 多く の用途に有用である。 以下マツ ド のバイ ンダ と しての 用途を例と して説明する。 The binder of the present invention is used as a binder or impregnating material such as a mud material, a refractory, a carbon material, a special carbon material, or various paints. Useful for many applications. The following describes an example of the use as a binder of a mat.
本発明のマツ ド材は、 本発明のノ イ ンダ一と耐火材料からな る。 上記耐火材料と しては、 従来公知のマ K材用の耐火材料 がいずれも使用でき る。 例えば 、 ロ ー石 、 シャモ 卜 、 ァルミ ナなどの耐火原料と、 炭素質材料、 炭化珪素 、 窒化珪 ^およぴ 粘土からなる耐火材料が挙げられる。 本発明のマ K材は 、 上 The mat material of the present invention is composed of the needle of the present invention and a refractory material. As the above-mentioned refractory material, any conventionally known refractory material for MAC materials can be used. For example, refractory materials such as rholite, chamomile, and aluminum, and refractory materials made of carbonaceous material, silicon carbide, silicon nitride, and clay can be used. The Ma material of the present invention is the top
H已 1§火材料 1 0 0質量部に対して本発明のパイ ンダ一を 、 該配 一ノレターノレ換算で、 1 0 〜 2 5質量部の比率で混合して得 られる。 該配合コールタールの使用量が該下限よ り も多レ、方が、 潤滑性が得られ易い。 一方、 該配合コ ールタ ールの使用虽が該 上限よ り も少ない方が、 耐用性が向上する。 It is obtained by mixing the binder according to the present invention with 100 parts by mass of H§1 § fire material at a ratio of 10 to 25 parts by mass in terms of the distribution norletanol. When the amount of the blended coal tar used is greater than the lower limit, lubricity is easily obtained. On the other hand, when the blended call tar is less than the upper limit, the durability is improved.
上記のマツ ド材の特徴は、 前記本発明の配合コ一ルタ一ルと 同様に、 得られるマ ツ ド材の保管安定性に優れる とレヽ う 点であ The characteristic of the above-mentioned mat material is that it is excellent in the storage stability of the obtained mat material, like the blended coal tar of the present invention.
■Ό 。 すなわち、 本発明の上記マツ ド材を長期間保管して いて もマ V ド、材の性 、 例えば 、 マ ド材の柔らカゝさ （硬度） など に変化が生じる - と がな < 、 また 、 揮発分が少ないこ とから作 業環境などに悪 響を与えるこ とがない。 これに対して従来の ノ、水 —ルタ一ルをパィ ンダーと して使用 したマツ ド材は、 特 に製鉄所や製鋼所において高い雰囲気温度に曝された +B. A ナ フタ レンな どの揮発成分の揮発な どによ り その柔らかさ が失 われ 、 使用困難となる場合があ り 、 また、 作業環境を悪化させ る畏れがあった 。 このよ う な畏れのためにマツ ド材を一度に多 量に製造しておく こ とが困難であつたが、 本発明のマッ 材は こ のよ う な畏れがなく 、 従って作業性が向上する とレ、 う利点が ある。 実施例 ■ Ό. That is, even if the above-described mat material of the present invention is stored for a long period of time, changes occur in the properties of the mud, the material, for example, the softness (hardness) of the mud material, and the like. The work environment is not adversely affected because of its low volatile content. On the other hand, matte materials using conventional water and water turrets as a binder were exposed to high ambient temperatures, especially in steelworks and steelworks, such as + B. A naphthalene. Due to the volatilization of volatile components, the softness of the volatile components may be lost, making it difficult to use. In addition, the working environment may be deteriorated. Because of such bending, it was difficult to manufacture a large amount of mat material at a time. However, the mat material of the present invention does not have such a bending, and therefore the workability is improved. There are advantages to this. Example
次に実施例、 比較例および評価例を挙げて本発明をさ らに具 体的に説明する。 なお、 文中の 「部」 および 「％」 は特に断り のない限り質量基準である。  Next, the present invention will be described more specifically with examples, comparative examples and evaluation examples. “Part” and “%” in the text are based on mass unless otherwise specified.
[ コ ーノレターノレの蒸留]  [Distillation of Cornole Nore]
コールタール 1 0 0部を脱水塔において約 1 5 0 °Cで 0 . 5 時間加熱処理 して脱水コールタ ール （無水コ ールタ ール） 9 7 部を得た。 該無水コ ールタール 9 7部を常圧蒸留によ り蒸留し、 留分 2 0 0 〜 2 5 0 °Cのナ フ タ リ ン油 1 9 部 と留分 2 3 0 〜 2 8 0 °Cの蒸留油 4部と、 軟ピッチである釜残 7 4部を得た。 以上のコールタ ール、 無水コールタ ール、 蒸留油おょぴ軟ピッ チの性状は下記表 1 の通り であった。  100 parts of coal tar was heat-treated in a dehydration tower at about 150 ° C. for 0.5 hours to obtain 97 parts of dehydrated coal tar (anhydrous coal tar). 9 7 parts of the anhydrous coal tar was distilled by atmospheric distillation, and 19 parts of naphthaline oil with a fraction of 2200 to 2500 ° C and a fraction of 2300 to 2800 ° C. 4 parts of distilled oil and 4 parts of the remainder 7 of a soft pitch were obtained. Table 1 below shows the properties of the above coal tar, anhydrous coal tar, and distilled oil and soft pitch.
[粘度の測定]  [Measurement of viscosity]
J I S Z 8 8 0 3 ( 1 9 9 1 ) 液体の粘度一測定方法に 準拠してブル ツ ク フィ ール ド B型回転粘度計を使用 して測定 した。  J I S Z 8 8 0 3 (1 9 9 1) Measured using a Brookfield B-type rotational viscometer according to the method for measuring the viscosity of a liquid.
[軟化点の測定]  [Measurement of softening point]
J I S K 2 4 2 5 ( 1 9 8 3 ) 6 . コ ールタ ールピ ッチ の軟化点測定方法 （環球法） に準拠して測定した。  J I S K 2 4 2 5 (1 9 8 3) 6. Measured according to the softening point measurement method (ring and ball method) of the cold tar pitch.
[固定炭素の測定]  [Measurement of fixed carbon]
J I S K 2 4 2 5 ( 1 9 8 3 ) 9 . 固定炭素分定量方法 に準拠して電気炉を使用 して測定した。  J I S K 2 4 2 5 (1 9 8 3) 9. Measurement was performed using an electric furnace in accordance with the fixed carbon content determination method.
[水分の測定]  [Measurement of moisture]
J I S K 0 0 6 8 ( 2 0 0 1 ) に準拠して容量滴定によ り カールフ ィ ッ シヤー法によ り 測定した。  Measured by the Karl Fischer method by volumetric titration in accordance with JISK 0 0 6 8 (2 0 0 1).
[ナフ タ リ ン と フエノ ールの含有率の測定]  [Measurement of content of naphthaline and phenol]
ガスク ロマ ト グラフィ一によ り測定し、 内部標準法にて定量 を行なった。 実施例 1 [配合コールタールおよびバイ ンダー] Measured by gas chromatography and quantified by internal standard method Was done. Example 1 [Formulated coal tar and binder]
上記で得られた蒸留油 と軟ピッチと を下記表 2 に記載の割 合で混合して本発明の配合コールタール 1 0種を得た。 それら の性状を表 2 に示した。  The above-obtained distilled oil and soft pitch were mixed at the ratio shown in Table 2 below to obtain 10 kinds of blended coal tar of the present invention. Their properties are shown in Table 2.
次に、 配合コールタール 1 (バイ ンダー 1 ) 、 配合コールタ ール 7 (バイ ンダー 7 ) および配合コールタール 1 0 (バイ ン ダー 1 0 ) の各 2 0 g をそれぞれビーカーに入れ、 3 5 °Cの雰 囲気に 1 週間放置した。 その際、 製造直後と 1 週間後のナフタ リ ン含有率と粘度を測定した。 結果を、 表 3 に示す。  Next, 20 g of each of compounded coal tar 1 (binder 1), compounded coal tar 7 (binder 7), and compounded coal tar 10 (binder 10) is placed in a beaker, and 35 ° C. Left in C atmosphere for 1 week. At that time, the naphthalene content and viscosity were measured immediately after production and after 1 week. The results are shown in Table 3.
比較例 1  Comparative Example 1
上記コ ールタ ール蒸留に供したも の と 同 じコ ールタ ールを 加熱釜に入れ、 2 4 時間をかけて 2 3 5 °Cまで加熱して脱水し、 比較例の無水コ ールタ ール（比較例のパイ ンダ一） を製造した。  The same call tar used in the above-mentioned call tar distillation is put into a heating kettle, heated to 23 5 ° C over 24 hours, dehydrated, and the anhydrous call tar of the comparative example (Comparative example of a binder) was manufactured.
次に、 実施例 1 と 同様に、 こ の無水コールタール 2 0 g をビ 一力一に入れて 3 5 °Cの雰囲気に 1 週間放置し、 製造直後と 1 週間後のナフ タ リ ン含有率と粘度を測定した。 結果を、 表 3 に ま と めて示す。 なお、 こ の無水コールタ ールは、 特開平 1 0 — 3 2 4 5 7 6 号記載の無水コールタールに相当 し、 6 0 °Cにお ける粘度は 2 8 0 m P a · s 、固定炭素は 3 2 %、水分 0 . 1 %、 ナフタ リ ン含有率 1 0 . 9 %であった。  Next, in the same manner as in Example 1, 20 g of this anhydrous coal tar was put together and left in an atmosphere of 35 ° C for 1 week, containing naphthaline immediately after production and after 1 week. The rate and viscosity were measured. The results are summarized in Table 3. This anhydrous coal tar corresponds to the anhydrous coal tar described in JP-A No. 10-32 45 57 6 and has a viscosity of 2880 mPa · s at 60 ° C, fixed. The carbon content was 32%, the moisture content was 0.1%, and the naphthalene content was 10.9%.
実施例 2 [マッ ド材]  Example 2 [Mad material]
アルミナ、 シ リ カ 、 炭化珪素、 窒化珪素および炭素などから なる粉末耐火材料 1 0 0部に対し、 実施例 1 の配合コールター ル 1 (バイ ンダー 1 ) の 1 8部を添加してよ く 混合し本発明の マッ ド材 1 を調製した。 同様に配合コ ールタール 7 (バイ ンダ 一 7 ) 、 および配合コールタール 1 0 (バイ ンダー 1 0 ) を用 いて本発明のマ ツ ド材 7 'およびマツ ド材 1 0 をそれぞれ調製 した。 各マッ ド材の組成を表 4 に示す。 Add 18 parts of compound coal tar 1 (binder 1) of Example 1 to 100 parts of powder refractory material made of alumina, silica, silicon carbide, silicon nitride, carbon, etc. Then, Mad material 1 of the present invention was prepared. Similarly blended tartar 7 (binder 7) and blended coal tar 10 (binder 10) were used to prepare the mat material 7 'and the mat material 10 of the present invention, respectively. Table 4 shows the composition of each mat material.
比較例 2  Comparative Example 2
比較例 1 の無水コールタール （比較例のバイ ンダー） を用い て、 実施例 2 と 同様に比較例のマ ッ ド材を調製した。 組成を表 4 に併記する。  Using the anhydrous coal tar of Comparative Example 1 (Binder of Comparative Example), a comparative mat material was prepared in the same manner as Example 2. The composition is also shown in Table 4.
次に、 マッ ド材 1、 7、 1 0および比較例のマッ ド材の各 1 k g を 3 5 °Cで 1週間放置し、 製造直後と 1週間後の各マツ ド 材の硬度 （柔らかさ） を測定した。 該硬度は、 各マッ ド材を 7 0 °Cで 5時間保温した後、 針侵入式硬度計 （大起理化工業 （株） 製ク ラス 卜硬度計） を用いて測定した。 結果を、 表 4 にま とめ て示す ο 表 ェ と 2から判る よ う に、 本発明の配合コールタールは、 従 来の無水 一ルタールに較べて、 ナフタ リ ンゃ環境汚染物質で もあるフェノールなどの揮発成分が極めて少ない。 しかも、 該 軟ピッチと該蒸留油の配合比率が任意に変えられるので、 粘度 調整が容易であ り 、 広い粘度範囲の用途に対応可能である。 ま た、 表 3 からも明 らかなよ う に、 本発明の配合コールタールお よびパィ ンダ一は、 長期保管してもその粘度変化が少なく 、 保 管安定性に優れる。 さ らに、 該配合コ ールタールからなる本発 明のバィ ンダ一を用いたマ ッ ド材も、 経時安定性がある。 表 4 の結果では 、 従来品相当の比較例のマツ ド材は、 硬度増加率が Next, 1 kg of each of the mat materials 1, 7, 10 and the comparative sample material is allowed to stand for 1 week at 35 ° C, and the hardness (softness) of each mat material immediately after production and after 1 week. ) Was measured. The hardness was measured using a needle penetration type hardness tester (Class Sakai Hardness Tester, Class Kashiwa Hardness Tester) after keeping the temperature of each mat material at 70 ° C. for 5 hours. The results are summarized in Table 4. As can be seen from Tables 2 and 2, the blended coal tar of the present invention is a phenol that is also an environmental pollutant in naphthalene compared to the conventional anhydrous rutar. There are very few volatile components. In addition, since the blending ratio of the soft pitch and the distilled oil can be arbitrarily changed, it is easy to adjust the viscosity and can be used in a wide range of viscosity. Further, as is apparent from Table 3, the blended coal tar and the binder of the present invention have little change in viscosity even after long-term storage, and are excellent in storage stability. Furthermore, the mud material using the binder of the present invention comprising the blended coal tar is also stable over time. The results in Table 4 show that the comparative example mat material equivalent to the conventional product has a hardness increase rate.
9 0 %であるに対し、 本発明のマツ ド材のそれは 3 0 %程度に しか過ぎない 。 よって、 本発明のマッ ド材は、 組織の変質や亀 裂の発生が起こ り難い。 コールタール 無水コールタール 蒸留油 軟ピッチ 粘度 （mPa' s) 41 31 17 23000 軟化点 （°c) '一 一 一 40 固定炭素 （％) 30 30 5 40 水分 （％) 1.1 0.2 0.1 0.1 ナフタリン含有率 （％) 17.4 18.2 5 0.2 While it is 90%, that of the mat material of the present invention is only about 30%. Therefore, the mud material of the present invention is less susceptible to tissue alteration and cracking. Coal tar Anhydrous coal tar Distilled oil Soft pitch Viscosity (mPa's) 41 31 17 23000 Softening point (° c) '1 1 1 40 Fixed carbon (%) 30 30 5 40 Moisture (%) 1.1 0.2 0.1 0.1 Naphthalene content (%) 17.4 18.2 5 0.2
― 粘度は 60°Cにおける測定値である。 -Viscosity is measured at 60 ° C.
成分と混合比 (部） ナフタリン フエノール 粘度 Ingredients and mixing ratio (parts) Naphthalene phenol Viscosity
配合コールタール 含有率 含有率 軟ピッチ 蒸留油 mPa- s)  Blended coal tar Content Content Soft pitch Distilled oil mPa-s)
(%) (%) (%) (%)
1 88.0 12.0 2205 0.8 痕跡1 88.0 12.0 2205 0.8 Traces
2 87.4 12.6 1965 0.8 痕跡2 87.4 12.6 1965 0.8 Traces
3 87.0 13.0 1870 0.8 痕跡3 87.0 13.0 1870 0.8 Traces
4 86.0 14.0 1502 0.9 痕跡4 86.0 14.0 1502 0.9 Traces
5 85.0 15.0 1240 0.9 痕跡5 85.0 15.0 1240 0.9 Traces
6 84.5 15.5 1 127 0.9 痕跡6 84.5 15.5 1 127 0.9 Traces
7 84.0 16.0 1024 1.0 痕跡7 84.0 16.0 1024 1.0 Trace
8 83.3 16.7 900 1.0 痕跡8 83.3 16.7 900 1.0 Trace
9 83.8 17.2 800 1.0 痕跡9 83.8 17.2 800 1.0 Traces
10 77.5 22.5 300 1.3 0.01 粘度は製造直後の 60°Cにおける測定値である。 10 77.5 22.5 300 1.3 0.01 Viscosity is measured at 60 ° C immediately after production.
ナフタリンおよびフエノールの含有率は製造直後の含有率である。 The content of naphthalene and phenol is the content immediately after production.
表 3 製造直後 1週間放置後 ナフタリン ナフタリン Table 3 Immediately after production After 1 week Naphthalene Naphthalene
含有率（％) 含有率（％) 配合コールタール 1  Content (%) Content (%) Blended coal tar 1
0.8 2205 0.8 2200 (パインダ一1 )  0.8 2205 0.8 2200 (Pinda 1)
配合コールタール 7  Formulated coal tar 7
1.0 1024 0.9 1050 (バインダー 7)  1.0 1024 0.9 1050 (Binder 7)
配合コールタール 1 0  Compound coal tar 1 0
1.3 300 1.1 315 (バインダー 1 0)  1.3 300 1.1 315 (Binder 1 0)
無水コールタール  Anhydrous coal tar
1 1.2 220 9.8 305 (比較例のバインダー） 粘度は 60°Cにおける測定値である。  1 1.2 220 9.8 305 (Binder of Comparative Example) Viscosity is measured at 60 ° C.
W .  W.
(0 (0
表 4 原料 (部） マッド材 1 マッド材 7 マッド材 1 0 比較例のマッド材 焼きボーキサイト 42 42 42 42 炭化珪素 20 20 20 20 コークス 7 7 7 7 窒化珪素鉄 （75 ju m) 17 17 17 17 黒鉛 （75 / m) 4 4 4 4 カオリン粘土 5 5 5 5 ロー石粉 （75〃 m) 4 4 4 4 金属シリコン 1 1 1 1 配合コールタール 1 (バインダー 1 ) 18 0 0 0 配合コールタール 7 (バインダー 7) 0 18 0 0 配合コールタール 1 0 (バインダー 1 0) 0 0 18 0 無水コールタール (比較例のバインダー） 0 0 0 18 Table 4 Raw materials (parts) Mud material 1 Mud material 7 Mud material 1 0 Comparative mud material Baked bauxite 42 42 42 42 Silicon carbide 20 20 20 20 Coke 7 7 7 7 Iron iron nitride (75 jum) 17 17 17 17 Graphite (75 / m) 4 4 4 4 Kaolin clay 5 5 5 5 Rhodium powder (75 〃 m) 4 4 4 4 Metallic silicon 1 1 1 1 Blended coal tar 1 (Binder 1) 18 0 0 0 Blended coal tar 7 ( Binder 7) 0 18 0 0 Formulated coal tar 1 0 (Binder 1 0) 0 0 18 0 Anhydrous coal tar (Binder of comparative example) 0 0 0 18
製造直後 6727 5609 4207 4629 硬  Immediately after manufacture 6727 5609 4207 4629 Hard
度 1週間放置後 6649 7159 5472 8797 (N)  After standing for 1 week 6649 7159 5472 8797 (N)
硬度増加率 （％) 28 28 30 90 Hardness increase rate (%) 28 28 30 90
産業上の利用可能性 Industrial applicability
本発明によれば、 保管安定性に優れ、 さ らに用途に応じて粘 度調整が容易である配合コ ールタ ールおよび該配合コ ールタ ールからなる各種バイ ンダーを提供する こ と ができ る。 また、 本発明によれば、 保管安定性に優れる と と もに、 組織が変質し た り 亀裂が発生した り し難いマ ツ ド材を提供する こ と ができ る。  According to the present invention, it is possible to provide a blended coal tar having excellent storage stability and easy viscosity adjustment according to the application, and various binders composed of the blended coal tar. The In addition, according to the present invention, it is possible to provide a mat material that is excellent in storage stability and hardly changes in structure or cracks.

Claims

1 . 無水コールタールの蒸留油 と軟ピッチカゝらな り 、 かつ ナフ タ リ ン含有率が 1 . 5質量％以下の配合コールタ ール。 1. An anhydrous coal tar distillate and soft pitch coal, and a blended coal tar with a naphthaline content of 1.5% by mass or less.
2 . 該蒸留油が、 常圧換算で 2 3 0〜 2 8 0 °Cの留分であ る請求項 1 に記載の配合コールタ ール。  2. The blended coal tar according to claim 1, wherein the distilled oil is a fraction of 2 30 to 2800 ° C in terms of normal pressure.
言  Word
3 . 6 0 °Cにおける粘度が、 1 0 0〜 2 4 0 0 m P a ' s である請求項 1 に記載の配合コールタ ール。  The blended coal tar according to claim 1, wherein the viscosity at 3.60 ° C is 10 00 to 2400 m Pa's.
4 . フエノ ール含有率が 0 . 1 質量％以下である請求項 1 に記載の配合コ ールタ ール。  4. The blended tar tar according to claim 1, wherein the phenol content is 0.1% by mass or less.
5 . 上記請求項 1〜 4 のいずれかに記載の配合コールター ノレカゝらなるノ ィ ンダ一。 囲  5. A nodder made of blended Coulter Noreka according to any one of claims 1 to 4. Surrounding
6 . 上記請求項 5 に記載のバイ ンダーと耐火材からなる溶 融金属の出湯口 の閉塞材。 6. A plugging material for a molten metal outlet comprising the binder according to claim 5 and a refractory material.
7 . タール蒸留によって得られた軟ピッチと、 タール蒸留 によって得られた蒸留油との混合物であって、 ナフタ リ ン含有 量が 1 . 5質量％以下である こ と を特徴とする合成タール。  7. Synthetic tar, which is a mixture of soft pitch obtained by tar distillation and distilled oil obtained by tar distillation, and has a naphthalene content of 1.5% by mass or less.
PCT/JP2005/013204 2004-07-20 2005-07-11 Coal tar blend and plug for outlet for molten metal WO2006009128A1 (en)

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US8163666B2 (en) * 2006-10-20 2012-04-24 Krosakiharima Corporation Taphole mix
TWI501935B (en) * 2014-01-10 2015-10-01 China Steel Corp Mud composition of tap hole of blast furnace
TWI745848B (en) * 2020-02-03 2021-11-11 中國鋼鐵股份有限公司 Coal tar binder and method of fabricating same

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