US 12,292,237 B2
Metallurgical furnace having an integrated off-gas hood
Scott A. Ferguson, Murfreesboro, TN (US); and Troy D. Ward, Franklin, TN (US)
Assigned to Systems Spray-Cooled, Inc., Smyrna, TN (US)
Filed by Systems Spray-Cooled, Inc., Smyrna, TN (US)
Filed on Oct. 18, 2023, as Appl. No. 18/381,612.
Application 18/381,612 is a division of application No. 17/513,385, filed on Oct. 28, 2021, granted, now 11,815,313.
Application 17/513,385 is a continuation of application No. 16/419,670, filed on May 22, 2019, granted, now 11,187,462, issued on Nov. 30, 2021.
Claims priority of provisional application 62/699,537, filed on Jul. 17, 2018.
Prior Publication US 2024/0044580 A1, Feb. 8, 2024
Int. Cl. F27D 17/00 (2006.01); C21C 5/38 (2006.01)
CPC F27D 17/002 (2013.01) [C21C 5/38 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for venting a spray-cooled roof of a ladle metallurgical furnace having an integrated hood: processing molten metal materials in a ladle metallurgical furnace; the spray-cooled roof comprising a central opening having sidewalls defining the opening, the opening configured for one or more electrodes to pass there through; extracting process gases and fumes in the opening through a channel having an inlet formed in the sidewalls of the opening, wherein the channel has walls disposed within an enclosed space of the spray-cooled roof; and cooling the walls of the channel with a spray-cool system that extends between the walls of the channel and a top of the spray-cooled roof.