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1. WO1980001907 - FURNACE FOREHEARTH ELECTRODE GROUPS

Publication Number WO/1980/001907
Publication Date 18.09.1980
International Application No. PCT/US1979/000961
International Filing Date 09.11.1979
IPC
C03B 7/07 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
7Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob
02Forehearths, i.e. feeder channels
06Means for thermal conditioning or controlling the temperature of the glass
07Electric means
H05B 3/00 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
3Ohmic-resistance heating
CPC
C03B 7/07
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
7Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob ; , e.g. controlling the gob shape, weight or delivery tact
02Forehearths, i.e. feeder channels
06Means for thermal conditioning or controlling the temperature of the glass
07Electric means
H05B 3/0023
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
3Ohmic-resistance heating
0019Circuit arrangements
0023for heating by passing the current directly across the material to be heated
Applicants
Inventors
Priority Data
1938912.03.1979US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FURNACE FOREHEARTH ELECTRODE GROUPS
(FR) GROUPES ELECTRODES D"AVANT-CORPS DE FOUR
Abstract
(EN)
In a melting furnace forehearth, having opposed electrodes arranged in groups immersed in the melted material such that heating is produced by Joule effect, cross firing between adjacent electrode groups frequently occurs. The cross firing is reduced by connecting the opposed electrodes to a multiphase power source so that the phase relationship between groups of adjacent electrodes along the forehearth (5) is less than 90 and typically 60 . The electrode groups may be arranged along the path of molten material movement in the forehearth (5) and produce a current across the forehearth (5). The electrodes may be arranged to enter from the bottom, side or top the forehearth channel.
(FR)
Dans un avant-creuset ou canal de distribution d"un four de fusion, ayant des electrodes opposees disposees en groupes immerges dans le materiau en fusion ou le chauffage est produit par effet Joule, des amorcages entre groupes d"electrodes adjacentes ont frequemment lieu. Les amorcages sont reduits en connectant les electrodes opposees a une source d"energie a multiphases de telle sorte que le dephasage entre les groupes d"electrodes adjacentes le long de l"avant-creuset (5) soit inferieur a 90 et, d"une maniere caracteristique, de 60 . Les groupes d"electrodes peuvent etre disposes le long du chemin du materiau en fusion en mouvement dans l"avant-creuset (5) et produire un courant en travers de l"avant-corps (5). Les electrodes peuvent etre disposees de maniere a entrer par le fond, le haut ou les cotes du canal de l"avant-creuset.
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