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1. WO2002042230 - QUARTZ FUSION FURNACE AND METHOD FOR FORMING QUARTZ ARTICLES

Publication Number WO/2002/042230
Publication Date 30.05.2002
International Application No. PCT/US2001/047137
International Filing Date 06.11.2001
IPC
C03B 5/02 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
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
02in electric furnaces
C03B 5/12 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
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
12in shaft furnaces
C03B 5/167 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
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
167Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
C03B 5/43 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
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
42Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
43Use of materials for furnace walls, e.g. fire-bricks
C03B 17/04 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
17Forming glass by flowing out, pushing-out, or drawing downwardly or laterally from forming slits or by overflowing over lips
04Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
CPC
C03B 17/04
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
17Forming ; molten; glass by flowing-out, pushing-out, ; extruding; or drawing downwardly or laterally from forming slits or by overflowing over lips
04Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
C03B 5/021
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
02in electric furnaces ; , e.g. by dielectric heating
021by induction heating
C03B 5/12
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
12in shaft furnaces
C03B 5/1675
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
167Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
1672Use of materials therefor
1675Platinum group metals
C03B 5/43
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
42Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
43Use of materials for furnace walls, e.g. fire-bricks
Applicants
  • GENERAL ELECTRIC COMPANY [US]/[US]
Inventors
  • ANTCZAK, Stanley, Maciej
  • AHLGREN, Frederic, Francis
Agents
  • BENINATI, John, F.
Priority Data
09/717,39520.11.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) QUARTZ FUSION FURNACE AND METHOD FOR FORMING QUARTZ ARTICLES
(FR) FOUR DE FUSION POUR LE QUARTZ ET PROCEDE PERMETTANT DE FAÇONNER DES ARTICLES EN QUARTZ
Abstract
(EN)
A crucible (10) for melting a silica for fusion forming of said silica into a desired shape such as a tube. The crucible (10) having a main body with inner and outer surfaces comprised of a refractory material (11). In addition, the inner surface of at least a melting zone (14) includes a substantially gas-tight barrier layer (24) comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof. The tube so produced can be used as a preform or starter tube in the manufacture of optical fibers drawn from preforms.
(FR)
L'invention concerne un creuset (10) permettant de faire fondre une silice afin de lui imprimer une forme souhaitée façonner. Ce creuset (10) comprend un corps principal pourvu de surfaces intérieures et extérieures et constitué d'un matériau réfractaire (11). En outre, la surface intérieure d'au moins une zone de fusion (14) comprend une couche barrière sensiblement étanche au gaz (24) constituée d'un matériau choisi dans le groupe constitué de rhénium, d'osmium, d'iridium et de mélanges de ces éléments.
Latest bibliographic data on file with the International Bureau