F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
307/48
F27D 1/02 (2006.01)
Patent
CA 1122631
ABSTRACT OF THE DISCLOSURE An improvement in a roof for covered electric smelting furnaces is disclosed. Cooling pipes are disposed on the outside surface of the roof sections and are of sufficient capacity and spacing to maintain a temperature on the inside of the roof of 150°C-400°C. The cooling system of the invention maintains the roof at an acceptable temperature during operation of the furnace and is designed so that there is a very small temperature gradient between the inlet and the outlet for the cooling fluid. Thus the roof temperature will also be maintained in a relatively narrow temperature range during operation.
323565
Elkem-Spigerverket A/s
Macrae & Co.
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