F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
39/1
F27D 17/00 (2006.01) C21C 5/56 (2006.01) F27D 13/00 (2006.01)
Patent
CA 1160836
ABSTRACT OF THE DISCLOSURE An apparatus for preheating a steel scrap, which comprises: a preheating vessel, having an open top and a bottom lid capable of being opened and closed, for receiving and preheating steel scrap, the preheating vessel being adapted to receive steel scrap to be preheated from the open top and to discharge the steel scrap preheated in the preheating vessel by opening the bottom lid; a hood downwardly flaring for covering the open top of the preheating vessel, the hood being movable from the open top of the preheating vessel and adapted to introduce high-temperature waste gases discharged from a steel-refining metallurgical furnace into the preheating vessel; a pit for housing the preheating vessel, the pit being provided with a duct for discharging to the outside waste gases discharged into the pit from the bottom of the preheating vessel after preheating the steel scrap received in the preheating vessel; and, a canopy for sealing the gap between the pit and the preheating vessel housed in the pit, the gap between the periphery of the canopy and the pit being liquid-sealed; the apparatus being characterized in that: the canopy is gas-tightly fixed to the hood; and, the gap between the canopy and the preheating vessel housed in the pit is sealed by an expansion bellows fixed at an end thereof to the canopy.
384109
Date Takasaburo
Iguchi Mitsuya
Iwamaru Sumifusa
Maki Toshimichi
Watanabe Hisashi
Macrae & Co.
Nippon Kokan Kabushiki Kaisha
Toshin Seiko Kabushiki Kaisha
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