REBOX® - Events, News & Links

Munich-Pullach, May 2006 – ThyssenKrupp Steel AG and Linde AG have signed a cooperation agreement concerning the development and implementation of a new technology in galvanizing lines. The parties will combine their know how and operational experience to further develop the use of Linde’s REBOX® oxyfuel solutions in reheating and annealing. They aim at increased plant performance and improved product quality by applying the so-called Direct Flame Impingement (DFI) oxyfuel technology in galvanizing operations. DFI implies that the oxyfuel flame is in direct contact with the object to be heated. This drastically increases the heat transfer (kW/m²) and when employed in an existing catenary furnace it resulted in 50% more throughput capacity.

Linde has since 1990 installed over 90 REBOX® oxyfuel solutions in reheating and annealing applications, both batch and continuous type furnaces.



Firing with oxyfuel flames directly onto the material, the so-called Direct Flame Impingement technology, results in a highly effective heat transfer for increased furnace throughput.







The compact Direct Flame Impingement (DFI) technology efficiently increases the furnace throughput. In the photo, 4 oxyfuel burner ramps are seen firing onto the steel strip.





Oxyfuel impact on scale formation, Steel Rolling 2006, Paris, France

Oxyfuel impact (PDF 638 KB)



Flameless oxyfuel, AISTech2006, Cleveland, USA

Flameless (PDF 4,34 MB)

SCANA in Björneborg and UDDEHOLM TOOLING in Hagfors have upgraded to flameless oxyfuel in their car bottom furnaces. Both sites already have vast experience of REBOX® oxyfuel solutions in reheating since the first installation in 1993 at Hagfors and in 1997 at Björneborg.

Those installations were carried out to provide more production capacity, less fuel consumption and CO2 emissions in existing furnaces. The lower flame temperature and better heat distribution of flameless oxyfuel are aiming at further reduction of NOx emissions and improved uniform heating of the steel ingots prior to forging.



SCANA, Björneborg, Sweden equipped with REBOX® oxyfuel solutions in their car bottom furnace.

ThyssenKrupp Steel AG and Linde AG have signed a cooperation agreement concerning development and implementation of new technology in galvanizing lines. The parties will use know-how and operational experience to further develop the use of Linde’s REBOX® oxyfuel solutions in reheating and annealing. The objective is increased plant performance and improved product quality by applying the so-called Direct Flame Impingement (DFI) oxyfuel technology in galvanizing operations. DFI implies that the oxyfuel flame is in direct contact with the object to be heated. This drastically increases the heat transfer (kW/m2) and when employed in an existing catenary furnace it resulted in 50% more throughput capacity.



Firing with oxyfuel flames directly onto the material, the so-called Direct Flame Impingement technology, results in a highly effective heat transfer for increased furnace throughput