Device for injecting preheated air into a shaft furnace
AssigneePaul Wurth S.A.
InventorsPierre Mailliet, Emile Lonardi, Georges Wahl, Gustave Hoelpes
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Abstract
The device is composed of several separate elements consisting of at least one central tubular element connected, on one side, by means of a first ball-and-socket joint and a first compensator to a first connector supplying preheated air and on the opposite side, by means of a second ball-and-socket joint and a second compensator to a second connector. In order to reduce the length of the device, the second joint is oriented in the opposite direction to the said first joint, its center of curvature being located on the axis of the said second connector on the inside of the latter.
Claims11
An apparatus for directing preheated air from a supply pipeline to an elbow and tuyere assembly for injecting the air into a shaft furnace, comprising:
- a refractory lined first tubular element extending along a first longitudinal axis from a first end to a convex second end having a first center of curvature which coincides with a point on the first axis;
- a refractory lined second tubular element extending along a second longitudinal axis from a convex first end to a second end, said convex first end having a second center of curvature which coincides with a point on the second axis and said second end being adapted for connecting to the elbow of the elbow and tuyere assembly;
- a refractory lined third tubular element extending along a third longitudinal axis from a concave first end to a concave second end, said concave first end articulating with the convex second end of the first element to form a first ball-and-socket joint and said concave second end articulating with the convex first end of the second elbow to form a second ball-and-socket joint so that the third axis passes through the first and second centers of curvature;
- first sealing means for sealing the first ball-and-socket joint;
- second sealing means for sealing the second ball-and-socket joint;
- and
- articulated means for pivotably connecting the first element to the second element.
Dependencies are inferred from the claim text.