Abstract: A process for heating a metal feedstock (31) fed in continuous to a smelting furnace (30) through a second horizontal heating section (34) through which hot discharge fumes collected from said furnace (30) pass, said fumes exerting a heating phase of said feedstock (31), characterized in that, immediately before entering said second heating section (34), the feedstock (31) is subjected to a preheating phase by heating means other than the discharge fumes collected from the smelting furnace (30). In a plant for the embodiment of said process, said different heating means are envisaged inside a first preheating section (33), which is operatively connected with said second heating section (34) by means of an intermediate fume evacuation section (35), the fumes coming from said sections (33) and (34) being conveyed to said section. Said sections (33, 34) preferably have a tunnel configuration.

Abstract: A plant and relative process for continuously feeding heated metallic material to a melting furnace, according to which, on at least one feeding line defined by a conveyor for continuously advancing the material to the furnace, there is one pair of operative modules defined by a first and a second operative feeding and heating module, the first and second operative modules being positioned in succession with respect to each other along the line, the first module being suitable for forming and directly heating a first layer of the material arranged on the line, and the second module being suitable for forming and directly heating a second layer of the material arranged superimposed with respect to the first layer.

Abstract: A heat exchanger rapid cooling flue gas of ironwork plants, including: a support structure of at least one module including an inlet manifold and an outlet manifold of the flue gas, mutually opposed and aligned; plural panels that extend between the inlet manifold and the outlet manifold mutually superimposed at a defined distance, pairs of adjacent panels defining flow channels of the flue gas closed laterally by shoulders and including at opposite ends respectively an inlet aperture communicating with the inlet manifold and an outlet aperture communicating with the outlet manifold; circulation ducts of a cooling fluid associated with the panels; and a first selective closing mechanism of the inlet apertures and a second selective closing mechanism of the outlet apertures of one or more of the channels; each of the channels laterally closed by a respective pair of shoulders of which at least one is of removable type.

Abstract: A process for heating a metal feedstock (31) fed in continuous to a smelting furnace (30) through a second horizontal heating section (34) through which hot discharge fumes collected from said furnace (30) pass, said fumes exerting a heating phase of said feedstock (31), characterized in that, immediately before entering said second heating section (34), the feedstock (31) is subjected to a preheating phase by heating means other than the discharge fumes collected from the smelting furnace (30). In a plant for the embodiment of said process, said different heating means are envisaged inside a first preheating section (33), which is operatively connected with said second heating section (34) by means of an intermediate fume evacuation section (35), the fumes coming from said sections (33) and (34) being conveyed to said section. Said sections (33, 34) preferably have a tunnel configuration.