Patent ID: 6418157
Filing Date: 2002-07-09
Classification: F27D

Abstract:
A roof for a metallurgical ladle arc furnace comprising a self-supporting structure fabricated from rectangular hollow section metallic pipework (4) and defining at least one flow circuit for cooling water, an upper, end wall of said roof having a plurality of apertures, each to receive, in a gas tight manner, a carbon electrode, said roof comprising:(i) a component (A) defined by a circular peripheral flange, (ii ) a generally tubular component (B) of smaller diameter than said circular peripheral flange, and (iii) a peripheral fume take off route defined by portions of components (A) and (B), being: (a) an annular flange (17) presenting both a lower, horizontal face (H1), and a vertical face (VI), a series of arcuate, fume exit apertures (12), and (b) an arcuate wall (18) presenting a vertical face (V2), and a horizontal wall (19) presenting a horizontal face (H2).