New generation of reheating furnace inductors
Fives has developed a new generation of reheating furnace inductors with reduced operational costs and minimized NOx emissions.
A high-flux inductor should be installed at the furnace discharge outlet to enable the furnace to operate at a lower temperature while the billet is being quickly reheated at the constant temperature before it is delivered to the mill. Therefore, the residence time at high temperature is drastically diminished; and the scale quantity is reduced.
This technology has been developed for long products – CELES CELINE LP, and flat products – CELES CELINE FP, and is mainly used for continuous casting lines before roughing mills or finishing mill stands, or at reheating furnaces or in thermal profile correction machinery at rolling lines.
The combination of CELES CELINE LP and a gas reheating furnace for a standard 360,000 t/y mill provides the following advantages:
- Metal loss: 66% less
- Production cost: 40% less
- NOx emissions: 42% less
CELES CELINE LP technology eliminates the temperature difference between a head and a tail of the billet and reduces skid marks thus improving production quality. Due to lower operating temperature of the furnace, the technology allows for the reduction of maintenance costs, i.e. extended lifetime of refractory and unloading rolls. It has a very compact footprint so it can easily be integrated into existing lines. The equipment generates virtually no magnetic field in the environment close to the inductor, which has emissions ratings consistently below European standards.