US 6,289,035 B1 · Mounting arrangement for auxiliary burner or lance

Abstract

A mounting block and an improved mounting arrangement for apparatus used in metal melting, refining and processing, particularly those apparatus adapted to steel making in an electric arc furnace, such as burners, lances and the like with supersonic oxygen lancing capability. The mounting block is fluid cooled to survive the hostile environment of the electric arc furnace and is designed to rest on the step between the side wall and hearth of the furnace without any substantial change to the structure of the furnace. The mounting block comprises a plurality of fluid cooling conduits surrounding an aperture which is formed through the block and adapted to mount the apparatus. The mounting arrangement includes utilizing the mounting block to mount an apparatus with supersonic oxidizing gas or lancing capability in an electric arc furnace. The apparatus is mounted by passing it through an aperture in a water cooled side panel aligned with the mounting aperture in the mounting block. Because the mounting block is approximately the width of the step, the discharge opening of the apparatus is moved closer to the surface of the melt and toward the center of the furnace thereby providing increased efficiency. The discharge opening will now also extend past the inner edge of the step so that the oxidizing gas flow pattern does not degrade the hearth material and other furnace equipment mounted nearby.

Claims15

Dependent claims

A mounting arrangement for an apparatus with a discharge end in a furnace having a hearth of refractory material which collects molten metal and a plurality of fluid cooled panels forming a side wall and having a step between the side wall and the hearth, said mounting arrangement comprising:

a fluid cooled side wall panel with an aperture adapted to receive the apparatus;
a fluid cooled cast iron mounting block resting on said step inside of said side wall, said mounting block having a front area adapted to face the inside of the furnace and containing a recess, a back area adapted to face said side wall panel, the width between said front area and back area approximately equal to the width of said step, and a porch at said front area having a corrugated slope toward the inside of the furnace for deflecting charged scrap away from said mounting block while maintaining a slag covering, said mounting block further having an aperture adapted to receive the apparatus;
a fluid cooled copper insert mounting in said recess and having an aperture adapted to receive the apparatus;
wherein said side wall panel, mounting block and insert apertures are aligned at an mounting angle of up to 60 degrees from the horizontal to direct the discharge end of the apparatus toward the molten metal and wherein the apparatus when received through said side wall panel, mounting block and insert apertures has its discharge end extending past said step.

1 more element

Dependencies are inferred from the claim text.

Mounting arrangement for auxiliary burner or lance

Life of this patent

Mounting arrangement for auxiliary burner or lance

Life of this patent

Abstract

Claims15