GB295628A - Improvements in and relating to cellular silica product and method of fabrication - Google Patents

Improvements in and relating to cellular silica product and method of fabrication

Info

Publication number
GB295628A
GB295628A GB21602/28A GB2160228A GB295628A GB 295628 A GB295628 A GB 295628A GB 21602/28 A GB21602/28 A GB 21602/28A GB 2160228 A GB2160228 A GB 2160228A GB 295628 A GB295628 A GB 295628A
Authority
GB
United Kingdom
Prior art keywords
binder
heated
impervious
moisture
specific gravity
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
GB21602/28A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB295628A publication Critical patent/GB295628A/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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
    • C04B20/068—Selection of ingredients added before or during the thermal treatment, e.g. expansion promoting agents or particle-coating materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

295,628. British Thomson-Houston Co., Ltd., (Assignees of Watson, H. L.). Aug. 15, 1927, [Convention date]. Nonconducting coverings for heat.-A porous silica product, impervious to moisture and of low specific gravity, is used as a heat insulator for refrigerators and furnaces. Quartz sand is heated to about 1700‹ C., is kept at this temperature for about half-an-hour, and is then cooled to room temperature. The resulting loose granular mass, which is either cristobalite or tridymite, is mixed with a shellac solution, is moulded to shape, and is then heated slowly to about 400‹ C. to evaporate the solvent of the binder and to decompose and carbonize the shellac. The product is next heated rapidly to about 1750‹ C. to eliminate the binder residue and to seal over the exterior surface of the moulded mass. The binder leaves little or no residue and produces the multiplicity of small cavities which are not connected with one another so that the material is impervious to moisture. The material is stated to have a specific gravity of 0.6 or less.
GB21602/28A 1927-08-15 1928-07-25 Improvements in and relating to cellular silica product and method of fabrication Expired GB295628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US295628XA 1927-08-15 1927-08-15

Publications (1)

Publication Number Publication Date
GB295628A true GB295628A (en) 1928-11-29

Family

ID=21849674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21602/28A Expired GB295628A (en) 1927-08-15 1928-07-25 Improvements in and relating to cellular silica product and method of fabrication

Country Status (1)

Country Link
GB (1) GB295628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188926A (en) * 1986-03-10 1987-10-14 Central Glass Co Ltd Foam glass having crust layer and method of producing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188926A (en) * 1986-03-10 1987-10-14 Central Glass Co Ltd Foam glass having crust layer and method of producing same
GB2188926B (en) * 1986-03-10 1990-08-08 Central Glass Co Ltd Foam glass having crust layer and method of producing same

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