FR2235885A1 - High purity glass production - using high frequency heating, either inductive or dielectric - Google Patents

High purity glass production - using high frequency heating, either inductive or dielectric

Info

Publication number
FR2235885A1
FR2235885A1 FR7423439A FR7423439A FR2235885A1 FR 2235885 A1 FR2235885 A1 FR 2235885A1 FR 7423439 A FR7423439 A FR 7423439A FR 7423439 A FR7423439 A FR 7423439A FR 2235885 A1 FR2235885 A1 FR 2235885A1
Authority
FR
France
Prior art keywords
inductive
dielectric
high frequency
frequency heating
glass production
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
FR7423439A
Other languages
French (fr)
Other versions
FR2235885B3 (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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority claimed from CH1464874A external-priority patent/CH590794A5/xx
Publication of FR2235885A1 publication Critical patent/FR2235885A1/en
Application granted granted Critical
Publication of FR2235885B3 publication Critical patent/FR2235885B3/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
    • C03B3/00—Charging the melting furnaces
    • C03B3/02—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet
    • C03B3/023—Preheating
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping

Abstract

Prodn. of glass from its constituent material present in a melting crucible, by bringing about at least the heating required for purifying and homogenising the glass by use of high frequency energy. By suitable choice of matls for the crucible and furnace, pick up of impurities from refractories or from heating gases is eliminated, and very high quality glass suitable for optical fibres or for laser construction can be produced.
FR7423439A 1973-07-05 1974-07-05 High purity glass production - using high frequency heating, either inductive or dielectric Granted FR2235885A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3200573 1973-07-05
CH1464874A CH590794A5 (en) 1973-07-05 1974-11-01

Publications (2)

Publication Number Publication Date
FR2235885A1 true FR2235885A1 (en) 1975-01-31
FR2235885B3 FR2235885B3 (en) 1977-05-06

Family

ID=25714863

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7423439A Granted FR2235885A1 (en) 1973-07-05 1974-07-05 High purity glass production - using high frequency heating, either inductive or dielectric

Country Status (5)

Country Link
JP (1) JPS5039312A (en)
DE (1) DE2431723A1 (en)
FR (1) FR2235885A1 (en)
NL (1) NL7408905A (en)
SE (1) SE7408410L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310975A1 (en) * 1975-05-13 1976-12-10 Int Standard Electric Corp VERY PURE GLASSES AND THEIR MANUFACTURING PROCESS
WO2016112234A1 (en) * 2015-01-08 2016-07-14 Corning Incorporated Method and apparatus for adding thermal energy to a glass melt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310975A1 (en) * 1975-05-13 1976-12-10 Int Standard Electric Corp VERY PURE GLASSES AND THEIR MANUFACTURING PROCESS
WO2016112234A1 (en) * 2015-01-08 2016-07-14 Corning Incorporated Method and apparatus for adding thermal energy to a glass melt

Also Published As

Publication number Publication date
FR2235885B3 (en) 1977-05-06
NL7408905A (en) 1975-01-07
JPS5039312A (en) 1975-04-11
DE2431723A1 (en) 1975-01-23
SE7408410L (en) 1975-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse