WO2013183241A1 - 生理食塩水に可溶なAl-Ca系無機繊維及びその組成物 - Google Patents

生理食塩水に可溶なAl-Ca系無機繊維及びその組成物 Download PDF

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WO2013183241A1
WO2013183241A1 PCT/JP2013/003252 JP2013003252W WO2013183241A1 WO 2013183241 A1 WO2013183241 A1 WO 2013183241A1 JP 2013003252 W JP2013003252 W JP 2013003252W WO 2013183241 A1 WO2013183241 A1 WO 2013183241A1
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composition
fiber
weight
inorganic fibers
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耕治 岩田
英樹 北原
持田 貴仁
賢 米内山
洋一 石川
達郎 三木
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Nichias Corp
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    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/62227Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
    • C04B35/62231Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on oxide ceramics
    • C04B35/62236Fibres based on aluminium oxide
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    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
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Definitions

  • the present invention relates to an Al—Ca inorganic fiber excellent in biosolubility and alumina reaction resistance and a composition for obtaining the inorganic fiber.
  • conventional inorganic fibers are secondary-processed into shaped products and irregular shaped materials, together with various binders and additives, and joint materials in furnaces such as heat treatment equipment, industrial kilns and incinerators, It is used as a joint material, a sealing material, a packing material, a heat insulating material, and the like for filling gaps such as refractory tiles, heat insulating bricks, iron skin, and mortar refractories. Therefore, it is often exposed to high temperatures during use, and is required to have heat resistance. Current biosoluble fibers have insufficient heat resistance at 1400 ° C., and fibers that do not shrink significantly even at such high temperatures are preferable.
  • alumina is often used as a member in the furnace, and there is a problem that the fibers contained in the secondary processed product react with the alumina and the secondary processed product or member adheres or melts. .
  • An object of the present invention is to provide an inorganic fiber that is highly soluble in physiological saline at pH 4.5 and has excellent alumina reaction resistance and a composition for obtaining the inorganic fiber.
  • the following inorganic fiber composition and inorganic fiber are provided.
  • a composition for inorganic fibers having the following composition. Al 2 O 3 65.2-77.2 wt% CaO 22.8-34.8 wt% SiO 2 0 to 2.6% by weight The sum of Al 2 O 3 and CaO is more than 93.0% by weight. 2.
  • 3. The composition for inorganic fibers according to 1 or 2, wherein the total of Al 2 O 3 and CaO is more than 98.0% by weight.
  • a method for producing an inorganic fiber, wherein the melted inorganic fiber composition is formed into a fiber.
  • 6.4 A shaped product or an amorphous product obtained using the inorganic fiber described in 6.4.
  • an inorganic fiber having high solubility in physiological saline having a pH of 4.5 and excellent alumina reaction resistance and a composition for obtaining the inorganic fiber.
  • composition for inorganic fibers of the present invention has the following composition.
  • the sum of Al 2 O 3 and CaO is more than 93.0% by weight.
  • the total of Al 2 O 3 and CaO may be 95.0 wt% or more, more than 98.0 wt%, 99.0 wt% or more, or 100 wt%.
  • the rest other than Al 2 O 3 and CaO is oxides or impurities of other elements.
  • the amount of Al 2 O 3 can be 66.0% by weight or more, 68.5% by weight or more, or 71.0% by weight or more. Further, the amount of Al 2 O 3 can be 76.0% by weight or less, 75.0% by weight or less, or 74.5% by weight or less.
  • the amount of CaO can be 23.0 wt% or more, or 25.0 wt% or more. Further, the amount of CaO can be 33.0% by weight or less, 31.5% by weight or less, 31.0% by weight or less, or 29.0% by weight or less.
  • SiO 2 is 2.0 wt% or less, 1.0 wt% or less, can be 0.2 wt% or less, or 0.1 wt% or less, may not include.
  • the composition of the present invention comprises a respective oxide selected from Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof. May or may not be included.
  • the amount of these oxides is 7 wt% or less, 5 wt% or less, 3 wt% or less, 2 wt% or less, 1.0 wt% or less, 0.5 wt% or less, 0.2 wt% or less, or It is good also as 0.1 weight% or less.
  • Each of the alkali metal oxides may or may not be contained, and is 7 wt% or less, 5 wt% or less, 3 wt% or less, 2 wt%, respectively. % Or less, 1.0% by weight or less, 0.5% by weight or less, 0.2% by weight or less, or 0.1% by weight or less.
  • Each of TiO 2 , ZnO, B 2 O 3 , P 2 O 5 , MgO, SrO, BaO, Cr 2 O 3 , ZrO 2 , and Fe 2 O 3 may or may not be included, each having a weight of 7 % Or less, 5% or less, 3% or less, 2% or less, 1.0% or less, 0.5% or less, 0.2% or less, or 0.1% or less. .
  • the amount of each component of the above composition may be arbitrarily combined.
  • composition of the present invention usually does not contain the following substances, or even contains them at 1.0% or less, 0.5% or less, 0.2% or less or 0.1% or less, respectively.
  • Inorganic fibers can be obtained from the composition of the present invention.
  • Inorganic fibers can be produced by a known method such as a melting method or a sol-gel method, but the melting method is preferred because of its low cost.
  • the melting method a melt containing CaO and Al 2 O 3 is produced, and the melt is made into a fiber.
  • it can be manufactured by a spinning method in which a melted raw material is poured onto a wheel rotating at high speed, and a blow method in which the melted raw material is fiberized by applying compressed air.
  • the fiber may be coated with a known coating material or may not be coated.
  • the fiber of the present invention has the same composition as that of the raw material, and by having the above composition, it has excellent solubility in physiological saline at pH 4.5 and excellent alumina reaction resistance.
  • the solubility in physiological saline having a pH of 4.5 is preferably 1.0 mg / g or more, more preferably 3.5 mg / g or more, and further preferably 4.0 mg / g or more, according to the measurement method of the example.
  • the solubility of the fiber can also be measured by the following method.
  • the fiber is placed on a membrane filter, pH 4.5 physiological saline is dropped on the fiber by a micropump, and the filtrate that has passed through the fiber and filter is stored in a container.
  • the accumulated filtrate is taken out after 24 and 48 hours, and the eluted components are quantified with an ICP emission spectrometer, and the solubility and dissolution rate constant are calculated.
  • the measurement element can be two elements of Al and Ca which are main elements.
  • the fiber diameter may be measured and converted to a dissolution rate constant k (unit: ng / cm 2 ⁇ h), which is an elution amount per unit surface area / unit time.
  • Alumina reactivity is the measurement method of the example, preferably with marks but not attached, and more preferably without attaching and without marks.
  • the fibers of the present invention preferably have heat resistance at 800 ° C or higher, 1000 ° C or higher, 1100 ° C or higher, 1200 ° C or higher, 1300 ° C or higher, or 1400 ° C or higher.
  • the volume shrinkage (%) obtained by heating a cylindrical sample having a diameter of about 7 mm and a height of about 15 mm at a predetermined temperature of 800 to 1400 ° C. for 8 hours is 40% or less at 1400 ° C. for 8 hours. , Preferably 30% or less, more preferably 23% or less, and most preferably 15% or less. It is 40% or less, preferably 30% or less, more preferably 23% or less, and most preferably 15% or less at 1300 ° C. for 8 hours.
  • the heat shrinkage rate of the fiber can be measured before and after the blanket is manufactured from the fiber and fired at 1100 ° C. or higher or 1200 ° C. or higher for 24 hours.
  • the tensile strength can be measured with a universal testing machine.
  • Specific applications of the fibers of the present invention include heat treatment equipment, joint materials in furnaces such as industrial kilns and incinerators, joint materials for filling gaps such as refractory tiles, heat insulating bricks, iron skins, mortar refractories, sealing materials, Packing material, cushioning material, heat insulating material, fireproofing material, fireproofing material, heat insulating material, protective material, coating material, filter material, filter material, insulating material, jointing material, filler, repair material, heat resistant material, noncombustible material, soundproofing material , Sound-absorbing materials, friction materials (for example, brake pad additives), glass plate / steel sheet transport rolls, automobile catalyst carrier support materials, various fiber reinforced composite materials (for example, fiber reinforced cement, fiber reinforced plastic and other reinforcing fibers, heat resistance Materials, reinforcing fibers of refractory materials, reinforcing fibers such as adhesives and coating materials), and the like.
  • various fiber reinforced composite materials for example, fiber reinforced cement, fiber reinforced plastic and other rein
  • Biosolubility 1 g of a sample was placed in an Erlenmeyer flask (volume: 300 mL) containing 150 mL of pH 4.5 physiological saline. This flask was placed in an incubator at 37 ° C., and horizontal vibration at 120 revolutions per minute was continued for 2.5 hours. Thereafter, the amount (mg) of each element contained in the filtrate obtained by filtration was measured with an ICP emission spectrometer, and the total was taken as the elution amount (mg / sample 1 g).
  • Alumina reactivity A sample was molded to obtain a cylindrical sample having a diameter of about 7 mm and a thickness of about 5 mm. This cylindrical sample was placed on an alumina plate and heated at 1400 ° C. for 8 hours to observe the presence or absence of adhesion or melting. It was 4 when the cylindrical sample was melted, 3 when it was adhered, 2 when it was not adhered but remained, and 1 when it was not adhered and remained.
  • Comparative Examples 2 and 3 Inorganic fiber A (ceramic fiber (conventional heat-resistant inorganic fiber)) containing 47% by mass of SiO 2 and 53% by mass of Al 2 O 3 (Comparative Example 2), 73% by mass of SiO 2 and 25% by mass of CaO Inorganic fiber B (conventional biosoluble fiber) (comparative example 3) containing 0.4% by mass of MgO and 2 % by mass of Al 2 O 3 was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • the inorganic fiber of the present invention can be used for various purposes as a heat insulating material or as a substitute for asbestos.

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Description

生理食塩水に可溶なAl-Ca系無機繊維及びその組成物
 本発明は、生体溶解性とアルミナ耐反応性に優れるAl-Ca系無機繊維とその無機繊維を得るための組成物に関する。
 アスベストは、軽量で扱いやすく且つ耐熱性に優れるため、例えば、耐熱性のシール材として使用されていた。しかしアスベストは人体に吸入されて肺に疾患を引き起こすため使用が禁止され、これに代わりにセラミック繊維等が使用されている。セラミック繊維等は、耐熱性がアスベストに匹敵する程高く、適切な取り扱いをすれば健康上の問題は無いと考えられているが、より安全性を求められる風潮がある。そこで、人体に吸入されても問題を起こさない又は起こしにくい生体溶解性無機繊維を目指して、様々な生体溶解性繊維が開発されている(例えば、特許文献1,2)。
 従来市販されている生体溶解性繊維はpH7.4の生理食塩水に対し高い溶解性を持つ物がほとんどであった。一方で繊維が肺に吸入されるとマクロファージに捕り込まれることが知られており、マクロファージ周囲のpHは4.5であることも知られている。従って、pH4.5の生理食塩水に対する溶解性の高い繊維も、肺内で溶解、分解されることが期待される。
 また、従来の無機繊維は、アスベストと同様に、様々なバインダーや添加物とともに、定形物、不定形物に二次加工されて、熱処理装置、工業窯炉や焼却炉等の炉における目地材、耐火タイル、断熱レンガ、鉄皮、モルタル耐火物等の隙間を埋める目地材、シール材、パッキング材、断熱材等として用いられている。従って、使用の際は高温に晒されることが多く、耐熱性を有することが求められている。現在の生体溶解性繊維は1400℃での耐熱性が不十分であり、このような高温でも大きく収縮しない繊維が好ましい。
 さらに、炉内の部材にアルミナが使用されていることが多く、二次加工品に含まれる繊維が、このアルミナと反応し二次加工品や部材が付着したり溶融したりする問題もあった。
特許公報第3753416号 特表2005-514318
 本発明の目的は、pH4.5の生理食塩水に対する溶解性が高くアルミナ耐反応性に優れる無機繊維とその無機繊維を得るための組成物を提供することである。
 本発明によれば、以下の無機繊維用組成物及び無機繊維等が提供される。
1.以下の組成を有する無機繊維用組成物。
 Al          65.2~77.2重量%
 CaO            22.8~34.8重量%
 SiO           0~2.6重量%
 AlとCaOの合計は93.0重量%超である。
2.Alが68.5~75.0重量%であり、CaOが25.0~31.5重量%である1記載の無機繊維用組成物。
3.AlとCaOの合計が98.0重量%超である1又は2記載の無機繊維用組成物。
4.1~3のいずれか記載の無機繊維用組成物から得られる無機繊維。
5.溶融した1~3のいずれか記載の無機繊維用組成物を繊維化する無機繊維の製造方法。
6.4記載の無機繊維を用いて得られる定形物又は不定形物。
 本発明によれば、pH4.5の生理食塩水に対する溶解性が高くアルミナ耐反応性に優れる無機繊維とその無機繊維を得るための組成物を提供することができる。
 本発明の無機繊維用組成物は以下の組成を有する。
 Al          65.2~77.2重量%
 CaO            22.8~34.8重量%
 SiO           0~2.6重量%
 Al及びCaOの合計は93.0重量%超である。
 Al及びCaOの合計を、95.0重量%以上、98.0重量%超、99.0重量%以上又は100重量%としてもよい。
 Al、CaO以外の残りは他の元素の酸化物又は不純物等である。
 Alの量を、66.0重量%以上、68.5重量%以上又は71.0重量%以上とすることができる。また、Alの量を76.0重量%以下、75.0重量%以下又は74.5重量%以下とすることができる。
 CaOの量を、23.0重量%以上、又は25.0重量%以上とすることができる。また、CaOの量を、33.0重量%以下、31.5重量%以下31.0重量%以下又は29.0重量%以下とすることができる。
 SiOは、2.0重量%以下、1.0重量%以下、0.2重量%以下又は0.1重量%以下とすることができ、含まなくてもよい。
 本発明の組成物は、Sc,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y又はこれらの混合物から選択されるそれぞれの酸化物を含んでも含まなくてもよい。これらの酸化物の量を、それぞれ7重量%以下、5重量%以下、3重量%以下、2重量%以下、1.0重量%以下、0.5重量%以下、0.2重量%以下又は0.1重量%以下としてもよい。
 アルカリ金属酸化物(KO、NaO、LiO等)の各々は含まれても含まれなくてもよく、それぞれ7重量%以下、5重量%以下、3重量%以下、2重量%以下、1.0重量%以下、0.5重量%以下、0.2重量%以下又は0.1重量%以下とすることができる。
 TiO、ZnO、B、P、MgO、SrO、BaO、Cr、ZrO、Feの各々は含まれても含まれなくてもよく、それぞれ7重量%以下、5重量%以下、3重量%以下、2重量%以下、1.0重量%以下、0.5重量%以下、0.2重量%以下又は0.1重量%以下とすることができる。
 上記の組成の各成分の量を任意に組み合わせてもよい。
 本発明の組成物は通常以下の物質を含まない、又は含んでもそれぞれ1.0重量%以下、0.5重量%以下、0.2重量%以下又は0.1重量%以下である。
 酸化ゲルマニウム、酸化テルル、酸化バナジウム、酸化イオウ、リン化合物、スズ、コバルト、酸化マンガン、フッ化物、酸化銅。
 本発明の組成物から無機繊維を得ることができる。
 無機繊維は溶融法、ゾルゲル法等公知の方法で製造できるが、低コストのため溶融法が好ましい。溶融法では、CaO、Alを含む溶融物を作製し、この溶融物を繊維化して製造する。例えば、高速回転しているホイール上に熔解した原料を流し当てることで繊維化するスピニング法及び熔解した原料に圧縮空気を当てることで繊維化するブロー法等により製造できる。
 繊維は公知の被覆材により被覆されていてもよいし被覆されていなくてもよい。
 本発明の繊維は原料の組成の組成と同じであり、上記の組成を有することにより、pH4.5の生理食塩水に対する溶解性に優れ、アルミナ耐反応性に優れる。
 pH4.5の生理食塩水に対する溶解性は、実施例の測定方法で、好ましくは1.0mg/g以上、より好ましくは3.5mg/g以上、さらに好ましくは4.0mg/g以上である。
 繊維の溶解性は以下の方法でも測定できる。
 繊維を、メンブレンフィルター上に置き、繊維上にマイクロポンプによりpH4.5の生理食塩水を滴下させ、繊維、フィルターを通った濾液を容器内に貯める。貯めた濾液を24、48時間経過後に取り出し、溶出成分をICP発光分析装置により定量し、溶解度及び溶解速度定数を算出する。例えば、測定元素は主要元素であるAl、Caの2元素とすることができる。尚、繊維径を測定して単位表面積・単位時間当たりの溶出量である溶解速度定数k(単位:ng/cm・h)に換算してもよい。
 アルミナ反応性は、実施例の測定方法で、好ましくは痕は付くが付着せず、さらに好ましくは付着しないで痕も無いことである。
 本発明の繊維は、好ましくは800℃以上、1000℃以上、1100℃以上、1200℃以上、1300℃以上又は1400℃以上で耐熱性を有する。具体的には、直径約7mm、高さ約15mmの円柱状サンプルを800~1400℃の所定温度で8時間加熱して求めた体積収縮率(%)が、1400℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。1300℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。1200℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。1100℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。1000℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。800℃-8時間で40%以下、好ましくは30%以下、更に好ましくは23%以下、最も好ましくは15%以下である。
 繊維の加熱収縮率は、繊維からブランケットを製造して1100℃以上又は1200℃以上で24時間焼成した前後で測定することができる。また、引張強度は万能試験機により測定できる。
 本発明の繊維から、バルク、ブランケット、ブロック、ロープ、ヤーン、紡織品、界面活性剤を塗布した繊維、ショット(未繊維化物)を低減または取り除いたショットレスバルクや、水等の溶媒を使用し製造するボード、モールド、ペーパー、フェルト、コロイダルシリカを含浸したウェットフェルト、等の定形品が得られる。また、それら定形品をコロイドなどで処理した定形品が得られる。また、水等の溶媒を使用し製造する不定形材料(マスチック、キャスター、コーティング材等)も得られる。
 また、上記定形品、不定形品と各種発熱体を組み合わせた構造体も得られる。
 本発明の繊維の具体的な用途として、熱処理装置、工業窯炉や焼却炉等の炉における目地材、耐火タイル、断熱レンガ、鉄皮、モルタル耐火物等の隙間を埋める目地材、シール材、パッキング材、クッション材、断熱材、耐火材、防火材、保温材、保護材、被覆材、ろ過材、フィルター材、絶縁材、目地材、充填材、補修材、耐熱材、不燃材、防音材、吸音材、摩擦材(例えばブレーキパット用添加材)、ガラス板・鋼板搬送用ロール、自動車触媒担体保持材、各種繊維強化複合材料(例えば繊維強化セメント、繊維強化プラスチックなどの補強用繊維、耐熱材、耐火材の補強繊維、接着剤、コート材などの補強繊維)等が例示される。
実施例1~3、比較例1
 表1に示す繊維組成について以下のように検討した。
 まず、表1に示す組成となるように原料を混合し、プレス加工して成形体を得た。この成形体を加熱溶融し、急冷して得られた物を粉砕しサンプルを得た。このサンプルを用いて以下の方法で評価した。その結果を表1に示す。
(1)生体溶解性
 サンプル1gを、pH4.5の生理食塩水150mLが入った三角フラスコ(容積300mL)に入れた。このフラスコを、37℃のインキュベーター内に設置して、毎分120回転の水平振動を2.5時間継続した。その後、ろ過により得られた濾液に含有されている各元素の量(mg)をICP発光分析装置により測定し、その合計を溶出量とした(mg/サンプル1g)。
(2)アルミナ反応性
 サンプルを成形して、直径約7mm、厚み約5mmの円柱状サンプルを得た。この円柱状サンプルをアルミナ板に載せて、1400℃8時間加熱して、付着や溶融の有無を観察した。円柱状サンプルが溶融したときは4、付着したときは3、付着しないが痕が残ったときは2、付着もせず痕も残らないときは1とした。
(3)耐熱性
 サンプルを成形して、直径約7mm、高さ約15mmの円柱状サンプルを得た。この円柱状サンプルを1400℃8時間加熱して、体積収縮率を求めた。
比較例2,3
 SiOを47質量%、Alを53質量%含む無機繊維A(セラミック繊維(従来の耐熱性無機繊維))(比較例2)と、SiOを73質量%、CaOを25質量%、MgOを0.4質量%、Alを2質量%含む無機繊維B(従来の生体溶解性繊維)(比較例3)について、実施例1と同様に評価した。結果を表1に示す。
Figure JPOXMLDOC01-appb-T000001
 本発明の無機繊維は、断熱材、またアスベストの代替品として、様々な用途に用いることができる。
 上記に本発明の実施形態及び/又は実施例を幾つか詳細に説明したが、当業者は、本発明の新規な教示及び効果から実質的に離れることなく、これら例示である実施形態及び/又は実施例に多くの変更を加えることが容易である。従って、これらの多くの変更は本発明の範囲に含まれる。
 この明細書に記載の文献及び本願のパリ優先の基礎となる日本出願明細書の内容を全てここに援用する。

Claims (6)

  1.  以下の組成を有する無機繊維用組成物。
     Al          65.2~77.2重量%
     CaO            22.8~34.8重量%
     SiO           0~2.6重量%
     AlとCaOの合計は93.0重量%超である。
  2.  Alが68.5~75.0重量%であり、CaOが25.0~31.5重量%である請求項1記載の無機繊維用組成物。
  3.  AlとCaOの合計が98.0重量%超である請求項1又は2記載の無機繊維用組成物。
  4.  請求項1~3のいずれか記載の無機繊維用組成物から得られる無機繊維。
  5.  溶融した請求項1~3のいずれか記載の無機繊維用組成物を繊維化する無機繊維の製造方法。
  6.  請求項4記載の無機繊維を用いて得られる定形物又は不定形物。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272116A (ja) * 1992-08-26 1994-09-27 Didier Werke Ag 無機繊維
JP2002068769A (ja) * 2000-08-23 2002-03-08 Taiheiyo Cement Corp 無機粒体の製造方法
JP2007303011A (ja) * 2006-05-10 2007-11-22 Denki Kagaku Kogyo Kk 無機繊維及びそれを用いた不定形耐火物
JP2009542927A (ja) * 2006-06-30 2009-12-03 ユニフラックス I リミテッド ライアビリティ カンパニー 無機繊維
JP2011106050A (ja) * 2009-11-17 2011-06-02 Nichias Corp 無機繊維の製造方法
JP2012102450A (ja) * 2010-10-14 2012-05-31 Nichias Corp 無機繊維質成形体及びその製造方法並びに加熱設備

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272116A (ja) * 1992-08-26 1994-09-27 Didier Werke Ag 無機繊維
JP2002068769A (ja) * 2000-08-23 2002-03-08 Taiheiyo Cement Corp 無機粒体の製造方法
JP2007303011A (ja) * 2006-05-10 2007-11-22 Denki Kagaku Kogyo Kk 無機繊維及びそれを用いた不定形耐火物
JP2009542927A (ja) * 2006-06-30 2009-12-03 ユニフラックス I リミテッド ライアビリティ カンパニー 無機繊維
JP2011106050A (ja) * 2009-11-17 2011-06-02 Nichias Corp 無機繊維の製造方法
JP2012102450A (ja) * 2010-10-14 2012-05-31 Nichias Corp 無機繊維質成形体及びその製造方法並びに加熱設備

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