IT1249656B - Procedimento e apparecchiatura per la realizzazione di vetri fluorurati. - Google Patents

Procedimento e apparecchiatura per la realizzazione di vetri fluorurati.

Info

Publication number
IT1249656B
IT1249656B ITTO910423A ITTO910423A IT1249656B IT 1249656 B IT1249656 B IT 1249656B IT TO910423 A ITTO910423 A IT TO910423A IT TO910423 A ITTO910423 A IT TO910423A IT 1249656 B IT1249656 B IT 1249656B
Authority
IT
Italy
Prior art keywords
procedure
equipment
creation
fluorinated glass
reaction
Prior art date
Application number
ITTO910423A
Other languages
English (en)
Inventor
Marco Braglia
Giuseppe Cocito
Original Assignee
Pirelli Cavi Spa
Sirti Spa
Sip
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 Pirelli Cavi Spa, Sirti Spa, Sip filed Critical Pirelli Cavi Spa
Priority to ITTO910423A priority Critical patent/IT1249656B/it
Publication of ITTO910423A0 publication Critical patent/ITTO910423A0/it
Priority to DE69200676T priority patent/DE69200676T2/de
Priority to EP92109309A priority patent/EP0517169B1/en
Publication of ITTO910423A1 publication Critical patent/ITTO910423A1/it
Application granted granted Critical
Publication of IT1249656B publication Critical patent/IT1249656B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
    • C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B9/00—General methods of preparing halides
    • C01B9/08—Fluorides
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/021—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by induction heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/025—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by arc discharge or plasma heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/225—Refining
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/02—Pretreated ingredients
    • C03C1/022—Purification of silica sand or other minerals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/80—Non-oxide glasses or glass-type compositions
    • C03B2201/82—Fluoride glasses, e.g. ZBLAN glass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)

Abstract

IN UN PROCEDIMENTO DI FABBRICAZIONE DI VETRI FLUORURATI IN CUI SI UTILIZZA NF3 COME AGENTE FLUORURANTE, SI INTRODUCONO NELL'AMBIENTE DI REAZIONE AZOTO ATTIVO PER ELIMINARE GLI OSSIDI DI AZOTO FORMATISI PER EFFETTO DELLA REAZIONE DI FLUORURAZIONE, E UNA TRAPPOLA PER L'OSSIGENO SVILUPPATOSI IN CONSEGUENZA DELLA REAZIONE CON AZOTO ATTIVATO. SI FORNISCE ANCHE UN'APPARECCHIATURA PER LA REALIZZAZIONE DEL PROCEDIMENTO (FIG. 1).
ITTO910423A 1991-06-05 1991-06-05 Procedimento e apparecchiatura per la realizzazione di vetri fluorurati. IT1249656B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITTO910423A IT1249656B (it) 1991-06-05 1991-06-05 Procedimento e apparecchiatura per la realizzazione di vetri fluorurati.
DE69200676T DE69200676T2 (de) 1991-06-05 1992-06-02 Verfahren und Vorrichtung zur Fluoridglasherstellung.
EP92109309A EP0517169B1 (en) 1991-06-05 1992-06-02 Method of and apparatus for fluoride glass fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910423A IT1249656B (it) 1991-06-05 1991-06-05 Procedimento e apparecchiatura per la realizzazione di vetri fluorurati.

Publications (3)

Publication Number Publication Date
ITTO910423A0 ITTO910423A0 (it) 1991-06-05
ITTO910423A1 ITTO910423A1 (it) 1992-12-05
IT1249656B true IT1249656B (it) 1995-03-09

Family

ID=11409394

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910423A IT1249656B (it) 1991-06-05 1991-06-05 Procedimento e apparecchiatura per la realizzazione di vetri fluorurati.

Country Status (3)

Country Link
EP (1) EP0517169B1 (it)
DE (1) DE69200676T2 (it)
IT (1) IT1249656B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1293654B1 (it) * 1997-07-29 1999-03-08 Cselt Centro Studi Lab Telecom Perfezionamenti ai forni ad induzione per la sintesi dei vetri.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163538A (ja) * 1984-09-04 1986-04-01 Kokusai Denshin Denwa Co Ltd <Kdd> フッ化物ガラスの精製法
US4885019A (en) * 1988-01-28 1989-12-05 The United States Of America As Represented By The Secretary Of The Air Force Process for making bulk heavy metal fluoride glasses
US4872894A (en) * 1988-05-26 1989-10-10 The United States Of America As Represented By The Secretary Of The Air Force Method for rapid preparation of halide glasses
IT1240939B (it) * 1990-04-13 1993-12-27 Sirti Spa Metodo per la purificazione di prodotti di partenza per la produzione di vetri fluorurati

Also Published As

Publication number Publication date
DE69200676T2 (de) 1995-04-06
EP0517169B1 (en) 1994-11-17
DE69200676D1 (de) 1994-12-22
EP0517169A3 (en) 1993-02-17
ITTO910423A1 (it) 1992-12-05
EP0517169A2 (en) 1992-12-09
ITTO910423A0 (it) 1991-06-05

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950616