Electric arc and ladle furnaces and components
AssigneesEmisshield, Inc., Melter S.A. De C.V.
InventorsJohn W. Olver, Timothy Wayne Wilson, Carlos Uribe, Alberto Rivera
Life of this patent
Estimating the term…
Abstract
Electric arc, and ladle, furnaces 10 have components 14 with a high-emissivity/high reflectivity layer 18 disposed on the hot face 16. The component 14 includes a water-cooled panel 40, a duct 34, roof 12 frame 38, pipes, dry delta 36, water-cooled delta 28, fourth hole elbow 32, fourth hole roof 42, side walls 26 and combinations thereof. The high-emissivity/high-reflectivity layer 18 comprises, in dry admixture, from about 5% to about 40% of an inorganic adhesive, from about 45% to about 92% of a filler, and from about 1% to about 25% of one or more emissivity agents.
Claims19
A component for an electric arc or ladle furnace having one or more surfaces facing a hot portion of the furnace, comprising:
- the surfaces have a high emissivity layer, having the properties of
- Thermal conductivity of 1.4 W/m/K at 350° C.;
- Emissivity of 0.85 to 0.95 at 2000° F.;
- and
- Dielectric constant of K=3.9 at 1 HZ;
- wherein
- the component surfaces of an electric arc or ladle furnace is taken from the group consisting of surfaces of a water-cooled panel, a duct, roof frame, pipes, dry delta, water-cooled delta, fourth hole elbow, side walls, fourth hole roof, and combinations of the surfaces thereof.
An electric arc or ladle furnace, comprising:
- a component for an electric arc or ladle furnace having one or more hot surface substrates facing a hot portion of the furnace, wherein
- the hot surface substrates have a high emissivity layer, having the properties of
- Thermal conductivity of 1.4 W/m/K at 350° C.;
- Emissivity of 0.85 to 0.95 at 2000° F.;
- and
- Dielectric constant of K=3.9 at 1 HZ;
- wherein
- the component surfaces of an electric arc or ladle furnace is taken from the group consisting of surfaces of a water-cooled panel, a duct, roof frame, pipes, dry delta, water-cooled delta, fourth hole elbow, dry delta, fourth hole roof, side walls, and combinations of the surfaces thereof.
Dependencies are inferred from the claim text.