Patent ID: 6059070
Filing Date: 2000-05-09
Classification: C21C,F23J,F27D,Y02P,Y10S

Abstract:
A soundproofed device to discharge fumes from a melting system in a steel plant, comprising:a forced ventilation system to force the fumes from the melting system through the soundproofed device;a substantially vertical chimney;a discharge conduit interposed between the forced ventilation system and the chimney, the discharge conduit being made of a refractory material and having at least a first segment having an inlet operably connected to the forced ventilation system, a second substantially vertical segment arranged at a base of the chimney and having an outlet connected to the chimney, and a third segment connecting an outlet of the first segment to an inlet of the second segment, the third segment being inclined with respect to each of the first and second segments, whereby the fumes undergo changes of direction through the conduit to generate a phase and counter-phase effect of sound waves to reduce noise.