Patent ID: 9677814
Date: 2017-06-13
CPC Classifications: C21C,F27B,F27D,Y02P

Claim:
1. A process for heating a metal feedstock comprising: feeding said feedstock in continuous to a smelting furnace through a second horizontal heating section, through which second discharge fumes collected from said smelting furnace pass, said second discharge fumes exerting a heating step of said feedstock, wherein, immediately before entering said second heating section, the feedstock is subjected to a pre-heating step by a different heating system other than the second discharge fumes, the pre-heating step producing first discharge fumes, wherein said different heating system is provided in a first pre-heating section, which is operatively connected with said second heating section by an intermediate fume evacuation section, the first and second discharge fumes being conveyed to said intermediate fume evacuation section, wherein said pre-heating step is performed with burners, and wherein said burners are disposed such to produce flames that direct the first discharge fumes toward the intermediate fume evacuation section.