foamed slag

expanded blast-furnace slag, foamed blast-furnace slag

The lightweight cellular material obtained by controlled processing of molten blast-furnace slag with water, or with water and other agents such as steam or compressed air or both. Also see blast-furnace slag.
References in periodicals archive ?
It is established in [4, 5] that in liquid-phase melting processes of reduction and melting of pellets proceed in solid-liquid phase of the foamed slag.
In this case oxidation-reduction processes are combined and proceed in solid-liquid phase of the foamed slag, which exerts significant influence on behavior of the phases, in particular of phosphorus.