Regenerated refractory granulate, process to produce it and its use

摘要

Regenerated fire resistant granules from mechanically prepared demolition and / or used refractory material, the particles of which have a surface coating of a hydrophobic medium consisting of a) a hydrophobic agent or b) a combination of a phenolic resin and a hardener of the itself, so that the granulate has in particular c) a pH value between 6 and 12 for materials rich in clay and between 9 and 12 for magnesite materials in an aqueous medium, d) a resistance to compression of the grain according to DIN standard 4226 part 3 or EN 13055-1 / 2002 between 8 and 150 N / mm2.