THERMALLY DECOMPOSED ZIRCONIUM SILICATE,A PROCESS FOR ITS PRODUCTION AND ITS USE

THERMALLY DECOMPOSED ZIRCONIUM SILICATE,A PROCESS FOR ITS PRODUCTION AND ITS USE

The invention relates to thermally cracked zirconium silicate, the crystalline zirconium oxide embedded in an amorphous silica phase having a mean grain size (d50 value) in the range from 0.5 mu m to 3.0 mu m and a specific surface area (BET) in the range from 3 to 15 m /g. As compared with prior th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DIETER BINDER, HANS HOFFMEISTER, KLAUS ZETZMANN, PETER KLEINSCHMIT
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE
FURNACES
HEATING
INORGANIC CHEMISTRY
KILNS
LIGHTING
MECHANICAL ENGINEERING
METALLURGY
NON-METALLIC ELEMENTS
OVENS
RETORTS
WEAPONS
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Beschreibung
Zusammenfassung:The invention relates to thermally cracked zirconium silicate, the crystalline zirconium oxide embedded in an amorphous silica phase having a mean grain size (d50 value) in the range from 0.5 mu m to 3.0 mu m and a specific surface area (BET) in the range from 3 to 15 m /g. As compared with prior thermally cracked zirconium silicates, the product according to the invention is distinguished by better suitability for the production of zirconium silicate colouring materials; further use relates to the recovery of zirconium oxide. The invention also relates to a process for preparing the thermally cracked zirconium silicate, which comprises melting of zirconium silicate in an inductive fusion furnace and cooling of a jet of melt by blowing with a gas and/or spraying with water.