Regenerated refractory granulate, process to produce it and its use

摘要

The invention relates to a fire resistant regenerated granulate made of mechanically processed fire resistant broken-out material and/or wear-caused material the grains of which have a coating agent on the surface thereof, wherein the coating material is water-repellant, and consists of a) hydrophobicity agent or b) a combination of a phenol resin and a hardener for that purpose, wherein the granulate in particular has c) a pH of 6-12, in particular 6-9, preferably 6-8.5 in clay rich materials, and 9-12 in magnesite materials in an aqueous medium, and d) a grain pressure resistance of 8-150, in particular 15-100 N/mm2, according to DIN 4226 part 3 or EN 13055- 1/2002. The invention further relates to a method for producing same and to the use thereof.