INERTIZATION OF ELECTRIC-ARC FURNACE DUST BY MEANS OF THE STABILIZING INTEGRATION THEREOF IN A CONSTRUCTION MATERIAL

摘要

The invention relates to the fact that large amounts of electric-arc furnace dust or EAFD, regardless of origin, can be stabilized and used in a 2 mm, commercially valuable sheet made of solid material, which can be obtained by extrusion, calendering or hot pressing from a composite formulation by mixing: (i) one or more polymers able to form a solid polymer matrix, in an overall amount of 10-25%; (ii) one or more organic-type phase change materials (PCM), optionally accompanied by mineral oil, wherein the total amount of PCM plus mineral oil is 5-20%; and (iii) 40-80% of EAFD. The sheet made of solid material can be used in the construction industry to simultaneously provide acoustic insulation blocks and storage of thermal energy.