With FIB premix impulsion burners Type IMP, there is no flame in the furnace. Complete combustion takes place within the burner block prior to the ejection of the totally burnt hot gases into the furnace cavity. This jet of burnt gas - moving at very high-speed due to combustion thermal expansion and the narrow burner block exit - aspirates and combines with the existing furnace atmosphere.
However,
since total combustion occurs within the burner block, the mixture of gases
produced by the burner jet and those prevailing in the furnace contains no
combustible components. No secondary reaction will occur. Thus, if the burner
has been adjusted to provide a reducing exhaust into the furnace cavity, the
furnace atmosphere will remain reduced. Carburising reactions may be increased
in the latter zones of the furnace by injecting, under accurate control, a
suitable hydrocarbon that will yield ionized methane.
When FIB premixed impulsion burners, a carefully controlled
and controllable reducing atmosphere can be obtained with absolutely no decarburisation
of the wire surface.
As a matter of demonstrated fact, a carburising environment
can be obtained by injecting propane into the last zone of the furnace.
FIB also produces a wide range of Premix burners for various
applications, with features for ignition, flame control, and refractory housing
for installation on existing furnaces. FIB premix burners cover an output
range from 6,000 to 440,000kcal/h per unit. They assure full combustion in
the burner block, with flame precluded from the furnace chamber.
Impulse
premix burners
With FIB premix impulsion burners Type IMP, there is no flame in the furnace. Complete combustion takes place within the burner block prior to the ejection of the totally burnt hot gases into the furnace cavity. This jet of burnt gas - moving at very high-speed due to combustion thermal expansion and the narrow burner block exit - aspirates and combines with the existing furnace atmosphere.
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