Device for blowing preheated air into a shaft furnace
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United States of America Patent
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-
Oct 31, 1995
Grant Date -
N/A
app pub date -
Mar 14, 1994
filing date -
Mar 31, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a device for blowing preheated air into a shaft furnace, comprising several separate tubular elements, wherein an outer shielding made of steel and an inner lining made of cast refractory concrete are connected in pairs by a ball joint and a compensator. The ball joint includes a convex pivot which is integral with a first tubular element and which can pivot in a concave dish integral with a second tubular element. At least the convex pivot of the ball joint comprises a profiled refractory brick anchored in the inner refractory lining made of cast refractory concrete.
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