GB1356443A - Process and apparatus for the manufacture of light granulates - Google Patents

Process and apparatus for the manufacture of light granulates

Info

Publication number
GB1356443A
GB1356443A GB3219971A GB3219971A GB1356443A GB 1356443 A GB1356443 A GB 1356443A GB 3219971 A GB3219971 A GB 3219971A GB 3219971 A GB3219971 A GB 3219971A GB 1356443 A GB1356443 A GB 1356443A
Authority
GB
United Kingdom
Prior art keywords
droplets
chamber
gases
granules
july
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
GB3219971A
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.)
Charbonnages de France CDF
Houilleres du Bassin du Nord et du Pas de Calais
Original Assignee
Charbonnages de France CDF
Houilleres du Bassin du Nord et du Pas de Calais
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
Priority claimed from FR7025945A external-priority patent/FR2055092A5/fr
Application filed by Charbonnages de France CDF, Houilleres du Bassin du Nord et du Pas de Calais filed Critical Charbonnages de France CDF
Publication of GB1356443A publication Critical patent/GB1356443A/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads
    • C03B19/102—Forming solid beads by blowing a gas onto a stream of molten glass or onto particulate materials, e.g. pulverising
    • C03B19/1025—Bead furnaces or burners
    • C03B19/103—Fluidised-bed furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/107—Forming hollow beads
    • C03B19/1075—Forming hollow beads by blowing, pressing, centrifuging, rolling or dripping
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/108—Forming porous, sintered or foamed beads
    • C03B19/1085—Forming porous, sintered or foamed beads by blowing, pressing, centrifuging, rolling or dripping
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/109—Glass-melting furnaces specially adapted for making beads
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1095—Thermal after-treatment of beads, e.g. tempering, crystallisation, annealing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Silicon Compounds (AREA)

Abstract

1356443 Granulating CHARBONNAGES DE FRANCE and HOUILLERES DU BASSIN DU NORD ET DU PAS-DE-CALAIS 8 July 1971 [10 July 1970] 32199/71 Heading B5A [Also in Division C1] Expanded granules of a silico-aluminous material are produced by melting the material in the presence of an atmosphere at a pressure such that liberation of gases from the material is prevented, forming droplets of the melt, and contacting the droplets with an atmosphere which permits liberation of gases whereby expanded granules are formed. The material may be colliery shale, clay, or fly ash. It may be ground and calcined in a fluidized bed at 1000-1050‹ C., with added carbon if necessary. The melting chamber may be made of graphite or vitreous carbon, heated by passing A.C. between a graphite electrode and the walls of the chamber. Alternatively the walls may be of refractory material which are cooled so that a solidified layer forms. The molting temperature may be 1300-1400‹ C., and fluxes may be added if necessary. Droplets may be formed by passing the melt through holes in the base of the chamber, drop formation being controlled by heating of the base-plates. The droplets may pass through air with a low CO partial pressure into a fluidized bed of sand at 250- 400‹ C. The granules and sand may be separated by gravity or screening. Exhaust gases may be fed to the calciner.
GB3219971A 1970-07-15 1971-07-08 Process and apparatus for the manufacture of light granulates Expired GB1356443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7025945A FR2055092A5 (en) 1969-07-18 1970-07-15

Publications (1)

Publication Number Publication Date
GB1356443A true GB1356443A (en) 1974-06-12

Family

ID=9058675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3219971A Expired GB1356443A (en) 1970-07-15 1971-07-08 Process and apparatus for the manufacture of light granulates

Country Status (1)

Country Link
GB (1) GB1356443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294046A2 (en) * 1987-05-12 1988-12-07 Pittsburgh Corning Corporation Process for making cellular glass nodules by means of a fluidized bed
EP0451964A2 (en) * 1990-03-15 1991-10-16 LITEROCK INTERNATIONAL (PROPRIETARY) Ltd. Method of producing a light weight building material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294046A2 (en) * 1987-05-12 1988-12-07 Pittsburgh Corning Corporation Process for making cellular glass nodules by means of a fluidized bed
EP0294046A3 (en) * 1987-05-12 1990-07-25 Pittsburgh Corning Corporation Process for making cellular glass nodules by means of a fluidized bed
EP0451964A2 (en) * 1990-03-15 1991-10-16 LITEROCK INTERNATIONAL (PROPRIETARY) Ltd. Method of producing a light weight building material
EP0451964A3 (en) * 1990-03-15 1993-04-21 Literock International (Proprietary) Ltd. Method of producing a light weight building material

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee