GB954567A - Manufacture of thermally insulating light moulded articles - Google Patents

Manufacture of thermally insulating light moulded articles

Info

Publication number
GB954567A
GB954567A GB3354761A GB3354761A GB954567A GB 954567 A GB954567 A GB 954567A GB 3354761 A GB3354761 A GB 3354761A GB 3354761 A GB3354761 A GB 3354761A GB 954567 A GB954567 A GB 954567A
Authority
GB
United Kingdom
Prior art keywords
mixtures
expanded graphite
dolomite
stabilized
matrix
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
Application number
GB3354761A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolomitwerke GmbH
Original Assignee
Dolomitwerke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dolomitwerke GmbH filed Critical Dolomitwerke GmbH
Publication of GB954567A publication Critical patent/GB954567A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/536—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite based on expanded graphite or complexed graphite
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/022—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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Ceramic Products (AREA)

Abstract

A method of manufacturing thermally insulating light moulded articles comprises adding to the matrix, as the pore-forming component, expanded graphite and thereafter processing the mixture to form a thermally insulating light moulded article. Suitable matrix material is a hydraulically bonding material, for example Portland cement, alumina cement, magnesia cement or stabilized burnt dolomite. The matrix may also comprise a non-hydraulically bonding material chosen from fireclay, aluminarich fireclay, corundum, silica and mixtures thereof, in admixture with a bonding agent, for example waterglass, sulphite waste liquor, dextrin and mixtures thereof. A further matrix material comprises a carbonaceous material, for example petroleum coke and a carbonaceous bonding agent, for example tar, bitumen and mixtures thereof. Stabilized burnt dolomite is obtained by burning dolomite to which has been added sufficient silicic acid to convert the calcium oxide content of the dolomite into di- and/or tri-calcium silicate. In examples there are prepared mixtures of (1) stabilized hydraulically bonding burnt dolomite, expanded graphite and water; (2) fireclay, expanded graphite and waterglass solution; (3) ground petroleum coke, expanded graphite and soft pitch. The mixtures are put into moulds and set to form bricks. To increase the hardness the bricks are heated at 1300 DEG to 1450 DEG C. while embedded in carbon powder to prevent oxidation.ALSO:A method of manufacturing thermally insulating light moulded articles comprises adding to the matrix, as the pore forming component, expanded graphite and thereafter processing the mixture to form a thermally insulating light moulded article. Suitable matrix material is a hydraulically bonding material, for example, Portland cement, alumina cement, magnesia cement or stabilized burnt dolomite. The matrix may also comprise a non-hydraulically bonding material chosen from five clay, alumina-rich fire clay, corundum, silica and mixtures thereof, in admixture with a bonding agent, for example waterglass, sulphite waste liquor, dextrin and mixtures thereof, a further matrix material comprises a carbonaceous material, for example, petroleum coke, and a carbonaceous bonding agent, for example, tar, bitumen and mixtures thereof. Stabilized burnt dolomite is obtained by burning dolomite to which has been added sufficient silicic acid to convert the calcium oxide content of the dolomite into di- and/or tricalcium silicate. In examples these are prepared mixtures of (1) stabilized hydraulically bonding burnt dolomite, expanded graphite and water; (2) fire clay, expanded graphite and waterglass solution; (3) ground petroleum coke, expanded graphite and soft pitch. The mixtures are put into moulds and set to form bricks. To increase the hardness the bricks are heated at 1300 DEG to 1450 DEG C. while embedded in carbon powder to prevent oxidation.
GB3354761A 1960-09-19 1961-09-19 Manufacture of thermally insulating light moulded articles Expired GB954567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED34293A DE1141933B (en) 1960-09-19 1960-09-19 Use of blaehgraphite for the production of heat-insulating, lightweight bodies

Publications (1)

Publication Number Publication Date
GB954567A true GB954567A (en) 1964-04-08

Family

ID=7042121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3354761A Expired GB954567A (en) 1960-09-19 1961-09-19 Manufacture of thermally insulating light moulded articles

Country Status (2)

Country Link
DE (1) DE1141933B (en)
GB (1) GB954567A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012408A1 (en) * 1978-12-13 1980-06-25 Pormit GmbH Porosierungsmittel für Baustoffindustrie Process for the manufacture of porous ceramic shaped articles
US4508841A (en) * 1981-01-19 1985-04-02 Mitsubishi Chemical Industries, Ltd. Process for producing porous refractory inorganic oxide products
WO2011110333A1 (en) * 2010-03-10 2011-09-15 H.C. Carbon Gmbh Building material with thermally insulating properties
CN107856166A (en) * 2017-12-18 2018-03-30 郑州远东耐火材料有限公司 A kind of zirconia-corundum refractory brick riser head heat-preserving structure and casting heat preserving method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853709A1 (en) * 1978-12-13 1980-07-03 Pormit Gmbh METHOD FOR PRODUCING A POROSING AGENT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543987A (en) * 1947-08-23 1951-03-06 Stark Ceramics Inc Method of producing porous, lightweight, burned argillaceous material
DE1054004B (en) * 1957-01-28 1959-03-26 Asta V D Decken Geb Von Heyden Process for the production of blue clay

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012408A1 (en) * 1978-12-13 1980-06-25 Pormit GmbH Porosierungsmittel für Baustoffindustrie Process for the manufacture of porous ceramic shaped articles
US4508841A (en) * 1981-01-19 1985-04-02 Mitsubishi Chemical Industries, Ltd. Process for producing porous refractory inorganic oxide products
WO2011110333A1 (en) * 2010-03-10 2011-09-15 H.C. Carbon Gmbh Building material with thermally insulating properties
CN107856166A (en) * 2017-12-18 2018-03-30 郑州远东耐火材料有限公司 A kind of zirconia-corundum refractory brick riser head heat-preserving structure and casting heat preserving method
CN107856166B (en) * 2017-12-18 2023-06-27 郑州远东耐火材料有限公司 Insulating structure and casting insulating method for riser of zirconia-corundum fused brick

Also Published As

Publication number Publication date
DE1141933B (en) 1962-12-27

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