Highly porous granulated corundum aggregate prepared out of alumina-polystyrene-foam mixture. Part 8. The well-targeted drying and firing schedulers for the raw corundum pellets

Abstract

The results of the raw corundum pellets drying condition investigation confrmed completely the supposition that the alumina-polystyrene-foam mixtures have the low sensitivity to the drying conditions. This fact allowed to combine the drying and the fring in one thermal vessel. As the vigorous evolution of the hydrolysis products and the polystyrene foam burning can damage the raw pellets, the heating rate should be set so that to give the gaseous products time to diffuse out of the material without breaching its structure. The well-targeted fring scheduler is proposed in the article.Ill.5.