C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
39/53
C21B 7/10 (2006.01) F27B 1/24 (2006.01) F27D 9/00 (2006.01)
Patent
CA 1140750
ABSTRACT OF THE DISCLOSURE Wall structure for a smelting stack is comprised of a cooling fluid flow pipe membrane layer comprised of a series of vertical, parallel arranged pipes extending between upper and lower manifold members. The pipe membrane completely sur- rounds a hot zone in the smelting stack. The upper and lower manifolds extend interiorly of the pipe wall membrane to define an alcove in which there is positioned a series of vertically arranged lengths of insulation cladding which are spaced from one another by gaps filled with fire-proof materials. The gaps contain elements of the pipe membrane layer directed in- teriorly of the pipe membrane. A waste-gas stack may be mounted directly adjacent the smelting stack with a common wall there- between. The waste-gas stack wall comprises only a pipe mem- brane. The primary function of the stack wall structure in the waste-gas stack is to remove heat from the waste gases; whereas, the primary function in the smelting stack is to retain heat within the stack and enable the furnace wall structure to withstand the smelting heat. A common wall serves both these functions. Since the load-bearing elements of the wall struc- ture are the pipe membranes, the stack wall structures may be supported in a blast furnace system by suspension from the upper manifold or erection upon the lower manifold.
349961
Kruger Jorg
Megerle Friedrich
Klockner-Humboldt-Deutz Aktiengesellschaft
Swabey Ogilvy Renault
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