Core-shell particles, flowable material, method for producing core-shell particles or flowable material, moldable composition for the production of feeder, core-fuel supply and use

摘要

the invention relates to core-shell particles for use as a filler for feeder compositions for producing feeders, comprising (a) a core having one or more cavities and a wall surrounding these cavities, where core (a) has an average diameter in the range of 0.15 to 0.45 mm, (b) a casing surrounding the core and consisting of or comprising (b1) particles comprising or consisting of a group material consisting of calcined kaolin or cordierite, where particles (b1) have a d10 of at least 0.05 µm and a d90 of at most 45 µm, and also (b2) a binder that connects the particles (b1) to each other and to the core (a).