Highly porous granulated corundum aggregate prepared out of alumina-polystyrene-foam mixture. Part 9. Physical and technical properties of the porous corundum pellets and of the pellets-based filling materials

Abstract

The investigating results are given for the strength capabilities of both the separate fractions and the fraction-based mixtures. It was established that to decrease the flling materials' heat conductivity the diameter of the pellets should be reduced or the density of the poly-disperse composition should be increased. The introducing of the corundum flling with grain size of not more than 60 micrometers into the batch's composition raises the pellets' thermal stability.Ill.5. Tab. 3.