The furnace door oxygen gun series includes the combined furnace
door carbon oxygen gun, furnace door special-shaped carbon oxygen
gun, furnace door oxygen gun, etc., all of which are water-cooled
structures. Thereinto: (1) Carbon oxygen gun of joint furnace door:
carbon oxygen gun separate process, low maintenance cost, reliable
safety performance, easy to replace. The oxygen flow rate is
1000-2000Nm3/h. (Specification Ø108mm-Ø152mm) (2) Furnace door
special-shaped carbon oxygen gun: The carbon oxygen gun body is
special-shaped structure, and the toner mix is fully utilized. The
oxygen flow rate is 2000-4500Nm3/h. (Specification Ø262X152mm) (3)
Furnace door oxygen gun: oxygen flow rate is 1500-3200Nm3/h.
(Specification Ø108mm-Ø168mm) Process parameters and technical
requirements of furnace door carbon oxygen gun: A In order to
obtain maximum kinetic energy from the oxygen jet shot by the
oxygen gun nozzle under the operating pressure, to ensure that
there is enough energy to stir the molten pool at a certain gun
height. Reduce the decay rate of the oxygen jet along the axis,
ensuring that the sprayed oxygen flow strands cover the area on the
surface of the molten pool. It has a better impact radius, stirs
evenly, and does not interfere with each other. In addition, there
is no negative pressure area and turbulent air flow along the axis
of the oxygen gun, which reduces the slag and molten metal between
the holes at the end of the oxygen gun nozzle to improve the life
of the nozzle. Therefore, supersonic Laval nozzles are used. B In
order to allow the toner to be fully injected with the oxygen flow,
the molten steel. Minimize the loss of toner being sucked away by
dusting. Increase the effectiveness of slagging and molten pool
reaction. Therefore, the axis of the carbon gun and the axis of the
oxygen gun maintain an angle of 2~5 degrees. This ensures that the
toner jet is under the oxygen jet and also synergistically ensures
the maximum service life of the two tips. The gun body is
double-barreled, and the oxygen gun and carbon spray tube can be
replaced independently. The angle between the axis of the carbon
oxygen gun and the axis of the nozzle is 25 ° ~ 45 °, the pipeline
layout is shown in the schematic diagram, the carbon injection hole
is parallel to the center line of the carbon gun body, and the
total length of the gun body is about 4000mm. Mach number M=1.95.
The maximum flow rate of the spray gun is based on the furnace
design, when the jet length and the jet optimization at the optimal
flow rate are disordered and contracted. The angle between the axis
of the oxygen gun and the nozzle is 35 degrees The amount of
cooling water used in the gun ≥ 40 m3/h, and the water pressure is
not less than 0.5Mpa. /* March 10, 2023 17:59:20
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