According to Danieli, the upgrade will consist of three phases of modification. The first phase will involve the replacement of the furnace’s direct-flame burners, flame control and ignition systems, combustion air fan and exhaust fan, as well as the installation of a new heat exchange system. The second stage will revamp the radiant tubes section, with updates to the flame control and ignition systems and installation of a new exhauster fan and pressure control system to handle waste gas. Finally, the after-pot cooling tower will be upgraded with new blowers, diffusers, and quenching and drying equipment. Danieli will also update the No. 1 line’s power center, drive panels and level 1 control system.

The revamp will increase the furnace’s output up to 160 metric tons/hour, Danieli estimates. The project will also reduce the line’s fuel consumption and NOx emissions.

Project completion is slated for January 2021.

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