公开(公告)号：DE59308133D1

公开(公告)日：1998-03-19

申请号：DE59308133

申请日：1993-06-03

Applicant: DEGUSSA

Inventor： MANGOLD HELMUT DR ,  HARTMANN WERNER DR ,  KLEINSCHMIT PETER DR ,  KERNER DIETER DR ,  RUDOLPH THOMAS DR

IPC: C01B13/22 ,  C01B33/26 ,  C01F7/30 ,  C04B35/18 ,  C04B35/185 ,  C04B35/626

Abstract: Silicon-aluminum mixed oxide powder which is flamehydrolytically produced and has a composition of 65 to 85% by weight Al2O3, remainder SiO2 and an amorphous structure, in which each primary particle contains components of SiO2 and of Al2O3, the primary particles are between 7 and 80 nm, preferably 10 and 40 nm in size and the specific surface of the powder is between 20 and 200 m2/g. The powder is used for the production of mullite and sintered compacts manufactured from it.