Preparation of spinel extrudates

Spinel extrudates are produced using a molding composition containing aluminum oxides, aluminum oxide hydrates and metal nitrates. Spinel extrudates are produced by extruding molding composition containing spinel powder and optionally extruding auxiliary aid, stabilizer, shrinkage reducer, and/or po...

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Bibliographische Detailangaben
Hauptverfasser:	MICHAEL HESSE, OTTO KUMBERGER
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER THEIR RELEVANT APPARATUS TRANSPORTING WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	Spinel extrudates are produced using a molding composition containing aluminum oxides, aluminum oxide hydrates and metal nitrates. Spinel extrudates are produced by extruding molding composition containing spinel powder and optionally extruding auxiliary aid, stabilizer, shrinkage reducer, and/or pore former. An Independent claim is also included for a honeycomb body obtained by drying the extrudates at 10-200o C, or by freeze drying -40-0o C under a pressure of 0.05-0.8 bar and calcining at 500-900o C.