DD243921A5 - Rieselfaehige, plastische, kohlenstoffhaltige, feuerfeste masse - Google Patents

Rieselfaehige, plastische, kohlenstoffhaltige, feuerfeste masse Download PDF

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Publication number
DD243921A5
DD243921A5 DD86288000A DD28800086A DD243921A5 DD 243921 A5 DD243921 A5 DD 243921A5 DD 86288000 A DD86288000 A DD 86288000A DD 28800086 A DD28800086 A DD 28800086A DD 243921 A5 DD243921 A5 DD 243921A5
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DD
German Democratic Republic
Prior art keywords
weight
mass
carbon
synthetic resin
percent
Prior art date
Application number
DD86288000A
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German (de)
English (en)
Inventor
Walter Pfingstner
Original Assignee
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Publication of DD243921A5 publication Critical patent/DD243921A5/de

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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
    • B22D41/02—Linings
    • 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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/013—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics containing carbon
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63472—Condensation polymers of aldehydes or ketones
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00086—Mixtures with prolonged pot-life
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
    • C04B2111/00887—Ferrous metallurgy
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00939—Uses not provided for elsewhere in C04B2111/00 for the fabrication of moulds or cores
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Insulated Conductors (AREA)
  • Paints Or Removers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Table Devices Or Equipment (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Food-Manufacturing Devices (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Fireproofing Substances (AREA)
DD86288000A 1985-03-19 1986-03-18 Rieselfaehige, plastische, kohlenstoffhaltige, feuerfeste masse DD243921A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0081885A AT385031B (de) 1985-03-19 1985-03-19 Rieselfaehige, plastische, kohlenstoffhaltige, feuerfeste masse

Publications (1)

Publication Number Publication Date
DD243921A5 true DD243921A5 (de) 1987-03-18

Family

ID=3500451

Family Applications (1)

Application Number Title Priority Date Filing Date
DD86288000A DD243921A5 (de) 1985-03-19 1986-03-18 Rieselfaehige, plastische, kohlenstoffhaltige, feuerfeste masse

Country Status (13)

Country Link
EP (1) EP0215853B1 (tr)
JP (1) JPS62502332A (tr)
AT (2) AT385031B (tr)
AU (1) AU5625286A (tr)
CA (1) CA1286438C (tr)
DD (1) DD243921A5 (tr)
DE (1) DE3664628D1 (tr)
ES (1) ES8702512A1 (tr)
GR (1) GR860722B (tr)
TR (1) TR25277A (tr)
WO (1) WO1986005481A1 (tr)
YU (1) YU46334B (tr)
ZA (1) ZA862032B (tr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021225A1 (de) * 2006-05-06 2007-11-08 Tu Bergakademie Freiberg Verfahren für die Herstellung von kohlenstoffhaltigen Erzeugnissen durch Gießformgebung und/oder bildsame Formgebung
DE102006031700A1 (de) * 2006-07-08 2008-01-10 Refratechnik Holding Gmbh Verfahren für die Herstellung von basischen, kohlestoffhaltigen Erzeugnissen durch Gießformgebung und/oder bildsame Formgebung
DE102011109682A1 (de) 2011-08-08 2013-02-14 Technische Universität Bergakademie Freiberg Verfahren zur Herstellung kohlenstoffhaltiger und/oder kohlenstoffgebundener keramischer Metallschmelze-Filter

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2900605B2 (ja) * 1989-01-20 1999-06-02 日本鋼管株式会社 金属含浸耐火物
DE3904473C1 (en) * 1989-02-15 1990-06-07 Radex-Heraklith Industriebeteiligungs Ag, Wien, At Filler sand
WO1991005748A1 (en) * 1989-10-11 1991-05-02 Shinagawa Refractories Co., Ltd. Amorphous refractory material
DE4120671C1 (tr) * 1991-06-22 1992-05-07 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
HUT71991A (en) * 1992-03-08 1996-03-28 Veitsch Radex Ag Process for producing fireproof compounds and fireproof moulding from this compounds
DE102007010365B4 (de) * 2007-03-03 2009-01-15 Refractory Intellectual Property Gmbh & Co. Kg Verwendung eines keramischen Erzeugnisses für die Auskleidung eines Zement-Drehrohrofens
EP2072482A1 (de) * 2007-12-17 2009-06-24 Evonik Degussa GmbH Gemenge und daraus hergestellte feuerfeste Formkörper oder Massen mit hoher Hydratationsbeständigkeit
CN102898156B (zh) * 2012-09-13 2014-03-26 山西高科耐火材料股份有限公司 一种钢包渣线镁碳砖及其制备方法
JP6670748B2 (ja) * 2013-08-05 2020-03-25 カルデリス フランス キャスタブル耐火性組成物並びにモノリシック耐火性ライニングの形成及び補修におけるその使用
DE102014019347A1 (de) 2014-12-22 2016-06-23 Refratechnik Holding Gmbh Feuerfeste Erzeugnisse und ihre Verwendung
DE102014019351A1 (de) 2014-12-22 2016-06-23 Refratechnik Holding Gmbh Feuerfeste Erzeugnisse und ihre Verwendung
CN108484138A (zh) * 2018-05-23 2018-09-04 瑞泰马钢新材料科技有限公司 一种添加复合氧化铝微粉及碳源的滑板砖及其制备方法
CN111517761A (zh) * 2020-04-16 2020-08-11 北京利尔高温材料股份有限公司 一种复合内衬材料及其应用和应用方法
CN111848135B (zh) * 2020-07-24 2023-02-03 中科南京绿色制造产业创新研究院 一种耐火材料及其制备方法和供气元件
CN112143384B (zh) * 2020-10-20 2022-04-12 内蒙古斯诺新材料科技有限公司 石墨坩埚修补膏及石墨坩埚修补方法
CN112390654A (zh) * 2020-11-30 2021-02-23 邯郸市翰润达耐火材料有限公司 一种耐火材料及其制备方法和应用
CN112778003A (zh) * 2021-01-07 2021-05-11 瑞泰马钢新材料科技有限公司 一种铝锆碳轻烧转炉闸阀的制作方法
CN114573325A (zh) * 2022-03-25 2022-06-03 中冶武汉冶金建筑研究院有限公司 一种低碳镁碳砖及其制备方法

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
DE1236392B (de) * 1964-04-18 1967-03-09 Hoechst Ag Fuellmasse fuer die Fugen zwischen Ofenwand und Kohlenstoffsteinschicht in bei hohen Temperaturen betriebenen OEfen
DE1646576C2 (de) * 1967-03-08 1979-03-01 Hoesch Werke Ag, 4600 Dortmung Stampfmasse für metallurgische öfen
US3729329A (en) * 1971-07-09 1973-04-24 Dresser Ind Nonaqueous lubricant-binder system for refractory ramming mixes
JPS5139251B2 (tr) * 1972-03-18 1976-10-27
JPS55107749A (en) * 1979-02-09 1980-08-19 Kyushu Refract Co Ltd Carbon-containing fire brick
JPS55130868A (en) * 1979-03-29 1980-10-11 Kyushu Refractories Clinker containing carbon and its preparation and fireeproof composition
JPS5684371A (en) * 1979-12-08 1981-07-09 Kyushu Refractories Carbonnbonded magnesiaacarbon brick
JPS5692160A (en) * 1979-12-24 1981-07-25 Kyushu Refractories Magnesiaaaluminaacarbon brick
JPS56169174A (en) * 1980-05-30 1981-12-25 Harima Refractories Co Ltd Carbon-containing vibration-molding refractories
JPS5788073A (en) * 1980-11-20 1982-06-01 Harima Refractories Co Ltd Manufacture of sliding nozzle refractories
US4324862A (en) * 1981-02-13 1982-04-13 Nalco Chemical Company Basic (MgO) non-aqueous plastic refractory mixture
GR75447B (tr) * 1981-04-27 1984-07-19 Armco Inc
JPS57184884A (en) * 1981-05-08 1982-11-13 Fuaizaa Kuiguree Kk Protective layer for metallurgical vessel
GB2106494A (en) * 1981-08-08 1983-04-13 Stein Refractories Refractory ramming mix
DE3149485A1 (de) * 1981-12-14 1983-06-30 Dr. C. Otto & Comp. Gmbh, 4630 Bochum Verfahren zur herstellung von ungebrannten feuerfesten steinen
JPS58208173A (ja) * 1982-05-28 1983-12-03 品川炉材株式会社 不焼成マグネシア・カ−ボン耐火物
JPS59217678A (ja) * 1983-05-26 1984-12-07 日本坩堝株式会社 易乾燥性高温成形用不定形耐火物
DE3437385A1 (de) * 1983-10-11 1985-05-15 Dresser Industries, Inc., Dallas, Tex. Feuerfeste mischung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021225A1 (de) * 2006-05-06 2007-11-08 Tu Bergakademie Freiberg Verfahren für die Herstellung von kohlenstoffhaltigen Erzeugnissen durch Gießformgebung und/oder bildsame Formgebung
DE102006031700A1 (de) * 2006-07-08 2008-01-10 Refratechnik Holding Gmbh Verfahren für die Herstellung von basischen, kohlestoffhaltigen Erzeugnissen durch Gießformgebung und/oder bildsame Formgebung
WO2008006779A2 (de) 2006-07-08 2008-01-17 Refratechnik Holding Gmbh FEUERFESTER GIEßMASSENVERSATZ AUS FEUERFESTEN ROHSTOFFEN SOWIE FEUERFESTE GIEßMASSE HERGESTELLT AUS DEM VERSATZ
EP2409960A2 (de) 2006-07-08 2012-01-25 Refratechnik Holding GmbH Gebinde mit einem feuerfesten Gießmassenversatz aus feuerfesten Rohstoffen sowie feuerfeste Gießmasse hergestellt aus dem Versatz
DE102011109682A1 (de) 2011-08-08 2013-02-14 Technische Universität Bergakademie Freiberg Verfahren zur Herstellung kohlenstoffhaltiger und/oder kohlenstoffgebundener keramischer Metallschmelze-Filter

Also Published As

Publication number Publication date
WO1986005481A1 (en) 1986-09-25
TR25277A (tr) 1992-12-09
CA1286438C (en) 1991-07-16
YU46334B (sh) 1993-05-28
JPS62502332A (ja) 1987-09-10
ATA81885A (de) 1987-07-15
EP0215853B1 (de) 1989-07-26
AT385031B (de) 1988-02-10
ES553116A0 (es) 1987-01-01
DE3664628D1 (en) 1989-08-31
ZA862032B (en) 1986-11-26
GR860722B (en) 1986-07-21
AU5625286A (en) 1986-10-13
EP0215853A1 (de) 1987-04-01
ES8702512A1 (es) 1987-01-01
YU85488A (en) 1991-02-28
ATE44946T1 (de) 1989-08-15

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