FR2242339A2 - High purity glass mfr. - in high frequency heated dielectric matl. water-cooled crucible - Google Patents

High purity glass mfr. - in high frequency heated dielectric matl. water-cooled crucible

Info

Publication number
FR2242339A2
FR2242339A2 FR7429371A FR7429371A FR2242339A2 FR 2242339 A2 FR2242339 A2 FR 2242339A2 FR 7429371 A FR7429371 A FR 7429371A FR 7429371 A FR7429371 A FR 7429371A FR 2242339 A2 FR2242339 A2 FR 2242339A2
Authority
FR
France
Prior art keywords
matl
water
high frequency
high purity
purity glass
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.)
Granted
Application number
FR7429371A
Other languages
French (fr)
Other versions
FR2242339B1 (en
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 GB4089073A external-priority patent/GB1439496A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2242339A2 publication Critical patent/FR2242339A2/en
Application granted granted Critical
Publication of FR2242339B1 publication Critical patent/FR2242339B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • C03B5/18—Stirring devices; Homogenisation
    • C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
    • C03B5/185—Electric means
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Glass Compositions (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

High purity glass is prepd. in a fusion crucible by supplying at least the heat reqd. in the refining and homogenising stages from a high frequency heat source. The fusion crucible is made from a dielectric matl. and is water cooled. The glass can be used in laser and optical fibre mfr.
FR7429371A 1973-07-05 1974-08-28 High purity glass mfr. - in high frequency heated dielectric matl. water-cooled crucible Granted FR2242339A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB3200573 1973-07-05
GB4089073A GB1439496A (en) 1973-08-30 1973-08-30 Glass preparation
CH1464874A CH590794A5 (en) 1973-07-05 1974-11-01

Publications (2)

Publication Number Publication Date
FR2242339A2 true FR2242339A2 (en) 1975-03-28
FR2242339B1 FR2242339B1 (en) 1982-05-21

Family

ID=27177216

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7429371A Granted FR2242339A2 (en) 1973-07-05 1974-08-28 High purity glass mfr. - in high frequency heated dielectric matl. water-cooled crucible

Country Status (3)

Country Link
CH (1) CH590794A5 (en)
DE (1) DE2440771A1 (en)
FR (1) FR2242339A2 (en)

Also Published As

Publication number Publication date
CH590794A5 (en) 1977-08-31
FR2242339B1 (en) 1982-05-21
DE2440771A1 (en) 1975-03-06

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Legal Events

Date Code Title Description
ST Notification of lapse