Device for injecting preheated air into a shaft furnace and...

Details Device for injecting preheated air into a shaft furnace and... Device for injecting preheated air into a shaft furnace and...

F - Mech Eng,Light,Heat,Weapons

27

B

F27B 1/16 (2006.01) C21B 7/16 (2006.01)

Patent

CA 2053935

The device for injecting preheated air into a shaft furnace consists of a plurality of tubular elements provided with a refractory lining, which are connected to each other by a ball-and-socket articulation (94, 96) and an expansion joint. The ball-and-socket articulations comprise a convex ball-part formed in the refractory material of the adjacent segment. They comprise a protective shell made of refractory steel which extends around the convex part up to the base of the ball-part. The radius of curvature of each ball-and-socket articulation is in the range of magnitude of half the diameter of the tubular elements.

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