GB715882A - Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials - Google Patents

Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials

Info

Publication number
GB715882A
GB715882A GB985350A GB985350A GB715882A GB 715882 A GB715882 A GB 715882A GB 985350 A GB985350 A GB 985350A GB 985350 A GB985350 A GB 985350A GB 715882 A GB715882 A GB 715882A
Authority
GB
United Kingdom
Prior art keywords
alumina
bodies
rods
per cent
silica
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
GB985350A
Inventor
Peter William Reynolds
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB985350A priority Critical patent/GB715882A/en
Publication of GB715882A publication Critical patent/GB715882A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/005—Other direct-contact heat-exchange apparatus one heat-exchange medium being a solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/16—Clays or other mineral silicates
    • 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
    • C04B35/16—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 based on silicates other than clay
    • C04B35/18—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 based on silicates other than clay rich in aluminium oxide
    • 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
    • C04B35/16—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 based on silicates other than clay
    • C04B35/18—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 based on silicates other than clay rich in aluminium oxide
    • C04B35/185—Mullite 3Al2O3-2SiO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)

Abstract

Substantially spherical, refractory bodies suitable for use as heat transfer media and/or as supports for catalytic materials are produced by incorporating a liquid adjuvant in a finely ground material comprising silica and alumina, the alumina content being from 72 to 42 per cent. by weight, mixing to a plastic mass, dividing, moulding the pieces into substantially spherical bodies between two surfaces between which there is relative motion, carefully heating to drive off and/or decompose the adjuvant, and then heating strongly, e.g. at 1450-1550 DEG C., to convert at least 70 per cent. of the alumina and silica content into mullite. The starting material may consist of a mixture of alumina and silica, or, say, sillimanite, kyanite, andalusite or kaolin to which alumina may be added. Up to 2 per cent. magnesia may also be incorporated. Suitable liquid adjuvants are water, mineral oil, diluted molasses, tragacanth mucilage, solutions of sugar or starch, greases, petroleum jellies. In the production of the bodies, the plastic mass is rolled into rods between two moving parallel rubber bands, the rods being cut and simultaneously rolled between corrugated surfaces; alternatively, the rods are cut into short lengths which are moulded between two parallel rubber bands moving in opposite directions and at different speeds, the upper band also having a lateral reciprocating motion. The diameter of the bodies is suitably 3/4 in.- 1/16 in. Specifications 608,849, 628,321 and 630,549, [all in Group XIII], are referred to. The Provisional Specification discloses (i) the granulation of a mixture of alumina, kaolin and water or molasses solution in a drum or paddle mixer, prior to drying and heating, (ii) pelleting, e.g. with punches and dies, to give bi-convex pellets of granules produced as at (i) above, but using graphite as a lubricant, and (iii) pelleting as at (ii) above, but using dies to give bodies having hemispherical ends joined by a short cylindrical section.
GB985350A 1950-04-21 1950-04-21 Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials Expired GB715882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB985350A GB715882A (en) 1950-04-21 1950-04-21 Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB985350A GB715882A (en) 1950-04-21 1950-04-21 Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials

Publications (1)

Publication Number Publication Date
GB715882A true GB715882A (en) 1954-09-22

Family

ID=9880010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB985350A Expired GB715882A (en) 1950-04-21 1950-04-21 Improvements in and relating to refractory bodies adapted for use as heat transfer media and/or as supports for catalytic materials

Country Status (1)

Country Link
GB (1) GB715882A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037626B (en) * 1955-10-27 1958-08-28 Azote Office Nat Ind Process for the production of particularly active and resistant catalysts containing Ni and fire-resistant oxides
EP0101855A1 (en) * 1982-07-23 1984-03-07 Norton Company Low density proppant for oil and gas wells
EP0102761A1 (en) * 1982-08-04 1984-03-14 Kennecott Corporation Sintered spherical pellets useful as gas and oil well proppants, production and use thereof
US7678723B2 (en) 2004-09-14 2010-03-16 Carbo Ceramics, Inc. Sintered spherical pellets
US7721804B2 (en) 2007-07-06 2010-05-25 Carbo Ceramics Inc. Proppants for gel clean-up
US7828998B2 (en) 2006-07-11 2010-11-09 Carbo Ceramics, Inc. Material having a controlled microstructure, core-shell macrostructure, and method for its fabrication
US8063000B2 (en) 2006-08-30 2011-11-22 Carbo Ceramics Inc. Low bulk density proppant and methods for producing the same
US8216675B2 (en) 2005-03-01 2012-07-10 Carbo Ceramics Inc. Methods for producing sintered particles from a slurry of an alumina-containing raw material

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037626B (en) * 1955-10-27 1958-08-28 Azote Office Nat Ind Process for the production of particularly active and resistant catalysts containing Ni and fire-resistant oxides
EP0101855A1 (en) * 1982-07-23 1984-03-07 Norton Company Low density proppant for oil and gas wells
EP0102761A1 (en) * 1982-08-04 1984-03-14 Kennecott Corporation Sintered spherical pellets useful as gas and oil well proppants, production and use thereof
US7678723B2 (en) 2004-09-14 2010-03-16 Carbo Ceramics, Inc. Sintered spherical pellets
US7825053B2 (en) 2004-09-14 2010-11-02 Carbo Ceramics Inc. Sintered spherical pellets
US8216675B2 (en) 2005-03-01 2012-07-10 Carbo Ceramics Inc. Methods for producing sintered particles from a slurry of an alumina-containing raw material
US7828998B2 (en) 2006-07-11 2010-11-09 Carbo Ceramics, Inc. Material having a controlled microstructure, core-shell macrostructure, and method for its fabrication
US8063000B2 (en) 2006-08-30 2011-11-22 Carbo Ceramics Inc. Low bulk density proppant and methods for producing the same
US7721804B2 (en) 2007-07-06 2010-05-25 Carbo Ceramics Inc. Proppants for gel clean-up

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