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GB329652A - Method of producing carbon granules - Google Patents

Method of producing carbon granules

Info

Publication number
GB329652A
GB329652A GB5759/29A GB575929A GB329652A GB 329652 A GB329652 A GB 329652A GB 5759/29 A GB5759/29 A GB 5759/29A GB 575929 A GB575929 A GB 575929A GB 329652 A GB329652 A GB 329652A
Authority
GB
United Kingdom
Prior art keywords
carbonized
jet
particles
carbonizable material
hardening
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
GB5759/29A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB5759/29A priority Critical patent/GB329652A/en
Priority to DEJ37280D priority patent/DE532077C/en
Priority to FR672115D priority patent/FR672115A/en
Publication of GB329652A publication Critical patent/GB329652A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

329,652. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). Feb. 21, 1929. Granulating - machines. - Spherical carbon granules are produced by subjecting a mass of carbonizable material in its liquid or plastic form to conditions which permit it to assume a spherical shape due to surface tension, hardening and then carbonizing the sphere. In an example, cellulose dissolved in a solution of zinc chloride is forced through a jet 6 by means of compressed air, and a revolving knife 8 breaks the extruded liquid into drops, which are hardened by falling through alcohol in a container 10 several feet in height. The cellulose pellets are removed when hard and are carbonized by heating in an inert atmosphere. Other suitable forms of apparatus are described in which the carbonizable material is broken up into small pellets by forcing through a jet by means of an intermittent supply of compressed air; this latter is obtained in one form of apparatus by means of a reciprocating plunger and in another by a vibrating ball valve. In another form, a stream of air is blown at right angles to the jet of carbonizable material and thus breaks it up into drops. In a modification of the invention, a synthetic resin is crushed and screened to give particles of the desired bulk, which particles are then placed on a surface which they will not wet, such as an oxidized metal, or asbestos surface, and are heated electrically. The particles melt and are immediately drawn up into substantially spherical form due to surface tension, after which they are allowed to cool and solidify. The products are carbonized by first heating for 20 to 30 hours to a temperature which continuallv rises from 70‹ to about 290‹ C.; after the preliminary stage which produces complete polymerization and hardening of the condensation products, the spheres are packed into carbon or graphite containers, and carbonized for about one week.
GB5759/29A 1929-02-21 1929-02-21 Method of producing carbon granules Expired GB329652A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5759/29A GB329652A (en) 1929-02-21 1929-02-21 Method of producing carbon granules
DEJ37280D DE532077C (en) 1929-02-21 1929-03-01 Process for the production of spherical carbon cores, especially for use in microphones
FR672115D FR672115A (en) 1929-02-21 1929-03-27 Process for the production of carbon granules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5759/29A GB329652A (en) 1929-02-21 1929-02-21 Method of producing carbon granules

Publications (1)

Publication Number Publication Date
GB329652A true GB329652A (en) 1930-05-21

Family

ID=9802123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5759/29A Expired GB329652A (en) 1929-02-21 1929-02-21 Method of producing carbon granules

Country Status (2)

Country Link
FR (1) FR672115A (en)
GB (1) GB329652A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697028A (en) * 1951-04-28 1954-12-14 Bell Telephone Labor Inc Methods of producing dehydrogenated hydrocarbon bodies
US2697029A (en) * 1951-04-28 1954-12-14 Bell Telephone Labor Inc Methods of producing carbonized substances containing silicon
US2758940A (en) * 1951-04-28 1956-08-14 Bell Telephone Labor Inc Methods of forming bodies of dehydrogenated hydrocarbon polymers
US3109712A (en) * 1960-01-11 1963-11-05 Plessey Co Ltd Bodies and shapes of carbonaceous materials and processes for their production
FR2468549A1 (en) * 1979-11-02 1981-05-08 Kureha Chemical Ind Co Ltd PROCESS FOR MANUFACTURING SPHERICAL PARTICLES OF WELL-UNIFORM DIMENSIONS, OF CARBON AND, PARTICULARLY, OF ACTIVE CARBON
FR2468550A1 (en) * 1979-11-02 1981-05-08 Kureha Chemical Ind Co Ltd SPHERICAL CARBON PARTICLES, PARTICULARLY ACTIVE CARBON, AND PROCESS FOR PRODUCING THESE PARTICLES FROM A MIXTURE CONTAINING BRAI, AMORPHOUS CARBON AND VISCOSITY REGULATING AGENT
US11390524B2 (en) 2017-02-08 2022-07-19 National Electrical Carbon Products, Inc. Carbon powders and methods of making same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697028A (en) * 1951-04-28 1954-12-14 Bell Telephone Labor Inc Methods of producing dehydrogenated hydrocarbon bodies
US2697029A (en) * 1951-04-28 1954-12-14 Bell Telephone Labor Inc Methods of producing carbonized substances containing silicon
US2758940A (en) * 1951-04-28 1956-08-14 Bell Telephone Labor Inc Methods of forming bodies of dehydrogenated hydrocarbon polymers
US3109712A (en) * 1960-01-11 1963-11-05 Plessey Co Ltd Bodies and shapes of carbonaceous materials and processes for their production
FR2468549A1 (en) * 1979-11-02 1981-05-08 Kureha Chemical Ind Co Ltd PROCESS FOR MANUFACTURING SPHERICAL PARTICLES OF WELL-UNIFORM DIMENSIONS, OF CARBON AND, PARTICULARLY, OF ACTIVE CARBON
FR2468550A1 (en) * 1979-11-02 1981-05-08 Kureha Chemical Ind Co Ltd SPHERICAL CARBON PARTICLES, PARTICULARLY ACTIVE CARBON, AND PROCESS FOR PRODUCING THESE PARTICLES FROM A MIXTURE CONTAINING BRAI, AMORPHOUS CARBON AND VISCOSITY REGULATING AGENT
US4371454A (en) * 1979-11-02 1983-02-01 Kureha Kagaku Kogyo Kabushiki Kaisha Process for preparing spherical carbon material and spherical activated carbon
US4420443A (en) 1979-11-02 1983-12-13 Kureha Kagaku Kogyo Kabushiki Kaisha Method for producing spherical particles of carbon and of activated carbon
US11390524B2 (en) 2017-02-08 2022-07-19 National Electrical Carbon Products, Inc. Carbon powders and methods of making same

Also Published As

Publication number Publication date
FR672115A (en) 1929-12-23

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