PREPARATION OF QUARTZ GLASS POWDER

PURPOSE:To obtain high-purity quartz glass powder in high yield, by adding water and an alcohol to a silicate to give a solution, dispersing or suspending the solution in a liquid having no compatibility with it to form powdery or granular gel, then calcining it. CONSTITUTION:100-300pts.vol. water a...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAKAWA KOUICHI, IKEDA HIROSHI, KURODA YASUO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOUNDS THEREOF GLASS INORGANIC CHEMISTRY JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL NON-METALLIC ELEMENTS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain high-purity quartz glass powder in high yield, by adding water and an alcohol to a silicate to give a solution, dispersing or suspending the solution in a liquid having no compatibility with it to form powdery or granular gel, then calcining it. CONSTITUTION:100-300pts.vol. water and 0.25pts.vol. alcohol are added to 100pts.vol. silicate. The raw material solution is dispersed or suspended in a liquid such as hexane, xylene, etc., substantially having no compatibility with the raw material solution. Powdery or granular gel formed by the treatment is separated from the mother liquor, washed, dried, and calcined. By this method, high-purity quartz glass powder useful as a main raw material for optical fiber of multicomponent system is obtained in high yield without producing dust.