Reverberatory furnace
![Reverberatory furnace](/Images/godic/202502/07/Reverberatory_furnace_diagram3515.png")
![Nirayama (韮山, Nirayama) Reverberatory furnace in Izunokuni, Shizuoka Japan.Construction began in November 1853, after 3 years 6 months, completed in 1857 and operated until 1864. (Approved Historic site on 8 March 1922, Heritage of Industrial Modernization of Japan on 30 November 2007)[3]](/Images/godic/202502/07/Reverberatory_furnace_of_Nirayama3515.jpg")
A reverberatory furnace is a metallurgical or process furnace that isolates the material being processed from contact with the fuel, but not from contact with combustion gases. The term reverberation is used here in a generic sense of rebounding or reflecting, not in the acoustic sense of echoing.