THERMALLY CRACKED ZIRCONIUM SILICATE, PROCESS FOR ITS PREPARATION AND 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...

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Bibliographische Detailangaben
Hauptverfasser:	BINDER, DIETER, HOFFMEISTER, HANS, KLEINSCHMIT, PETER, ZETZMANN, KLAUS
Format:	Patent
Sprache:	eng ; ger
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.