Method for producing an alkali-resistant alkaline earth aluminum-thermal insulation material, the l

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Method for the preparation of a 80% vol having a porosity between 60 and, for use temperatures of up to 1400 °C corrosion test according to DIN 51069 such alkali-resistant thermal insulation material and of suitable that only near-surface cracking occur, from alkaline earth aluminate, in the alkaline earth oxide-C mentioned-and alumina-A mentioned-in a molar ratio, from 1 : 1 to 3 : 1 C/A are present, in which a mixture of aluminum oxides, aluminum hydroxide and/or thermally decomposable aluminum salts and alkaline earth metal oxides, hydroxides and/or thermally decomposable alkaline earth salts -either with high pressure steam in a stirrer autoclave is hydrothermally treated (RA), so that from the slurry is produced an autoclaved Granules (GA), or mixed with water and a stabilizer and reinforcing fabric, formed and then with high pressure steam is autoclaved hydrothermally, whereupon the resulting solidified body are dried, so that blanks autoclaved ( [...] ) arise, _AOE280A2AO> at a mixing ratio which, in which carbon and/or CA arise 12 A 7, at a deployment site in situ or in a...