EP 0881987 A1 19981209 - PURE FUSED SILICA, FURNACE AND METHOD
Title (en)
PURE FUSED SILICA, FURNACE AND METHOD
Title (de)
REINE GESCHMOLZENE KIESELSÄURE, OFEN UND IHRE HERSTELLUNG
Title (fr)
SILICE PURE FONDUE, FOUR ET PROCEDE DE PRODUCTION
Publication
Application
Priority
- US 9701681 W 19970211
- US 1199796 P 19960221
Abstract (en)
[origin: WO9730933A1] An article of relatively pure silica, and a furnace and method of producing the article. The article is produced by collecting molten silica particles (24) in a refractory furnace in which at least a portion of the refractory has been exposed to a halogen-containing gas to react with contaminating metal ions in the refractory.
IPC 1-7
C01B 33/12; C03B 5/00; C03B 5/42; C03B 5/425; C03C 3/04; C03C 4/00
IPC 8 full level
C03B 19/14 (2006.01); C03C 3/06 (2006.01); C04B 41/53 (2006.01)
CPC (source: EP)
C03B 19/1407 (2013.01); C03B 19/1492 (2013.01); C03C 3/06 (2013.01); C04B 41/53 (2013.01); C03B 2201/02 (2013.01); C03B 2201/03 (2013.01); C03B 2207/52 (2013.01); C03B 2207/54 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9730933 A1 19970828; EP 0881987 A1 19981209; EP 0881987 A4 19990512; JP 2000505036 A 20000425
DOCDB simple family (application)
US 9701681 W 19970211; EP 97905726 A 19970211; JP 53017997 A 19970211