Aluminium dross-based insulating and exothermic materials for metallurgical industry

In the conducted investigations, aluminium dross, i.e. solid waste formed in the production and recycling of aluminium, was used as one of the basic raw materials to obtain a material characterised by insulating and exothermic properties, applied to heat riser heads in the process of iron or steel casting. The product was obtained by filtrating the slurry. In the raw mix, aluminium dross played the role of a refractory filler and a source of metallic aluminium, taking part in exothermic reactions. The trials conducted in semi-technical conditions, using prototype riser head sleeves, proved their good quality and effectiveness in the metallurgical process, comparable to the currently applied imported sleeves.