C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
23/394, 39/94
C21B 9/00 (2006.01) C21B 9/06 (2006.01)
Patent
CA 1140752
BLAST STOVE ABSTRACT OF THE DISCLOSURE A hot blast stove for preheating combustion air for an associated blast furnace, having a continuous, sub- stantially cylindrical shaped peripheral wall extending from a base to a domed cover. The peripheral wall includes a first cylindrical portion defined by a refractory ring wall of a predetermined thickness surrounded by insulation, and enclosed by a continuous metal shell; and, a second, diametrically larger, cylindrical portion disposed above the first cylindrical portion, defined by a continuation of the refractory ring wall of the first portion, surrounded by a predetermined thickness of insulating brick and then by insulation. The second portion is enclosed by a con- tinuous metal shell which joins the domed cover. An annular interconnecting portion joins the first and second cylindrical portions and includes a metal shell that diverges outwardly from the metal shell of the first cylindrical portion to obliquely join the metal shell of the second cylindrical portion and provide a gradual increasing diameter from the first to the second cylindrical portions. The annular inter- connecting metal shell provides vertical support for tapered insulating bricks which in turn support the insulating brick surrounding the ring wall in the second cylindrical portion. Alternately, the interconnecting portion includes nontapered insulating bricks and castable insulation between the shell and the ringwall.
357290
Anderson Harry L.
Fischley John
Malone William H.
Spirko Edward J.
Republic Steel Corporation
Ridout & Maybee Llp
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