Abstract: A molten metal furnace capable of preventing or suppressing the molten metal leakage and controlling the leakage direction. A molten metal furnace including an outer wall in an outer peripheral portion and a molten metal storage part holding a molten metal, in which a plurality of lining material layers are arranged on an inner wall of the molten metal furnace forming the molten metal storage part; of the lining material layers, a first lining layer constituting a surface in contact with the molten metal is made of a refractory material; and a sealing material is provided on at least one boundary between the first lining layer and the outer wall.

Abstract: A method for refining and casting metals and metal alloys includes melting and refining a metallic material and then casting the refined molten material by a nucleated casting technique. The refined molten material is provided to the atomizing nozzle of the nucleated casting apparatus through a transfer apparatus adapted to maintain the purity of the molten refined material. An apparatus including a melting and refining apparatus, a transfer apparatus, and a nucleated casting apparatus, in serial fluid communication, also is disclosed.

Abstract: An apparatus for casting metals by a nucleated casting technique to create a preform, the apparatus including a mold having a base and a side wall where the base can be moved relative to the side wall to withdraw the preform as it is being created. In various circumstances, portions of a droplet spray created by an atomizing nozzle, i.e., overspray, may accumulate on a top surface of the side wall and prevent or inhibit the preform from being moved relative to the side wall. The atomizing nozzle can be oriented such that the droplet spray passes over the top of the side wall to remelt and remove at least a portion of the overspray that has accumulated thereon. The mold can be rotated such that the overspray formed on a region of or on the entire perimeter of the top surface can pass through the droplet spray and can be removed from the side wall.

Abstract: A furnace lining is formed by a plurality of lining bricks. The bricks have surfaces defining an internal surface of the lining that is to face the interior of the furnace and to receive therefrom radiant heat. At least one depression is formed in the lining and opens onto the surface through an opening. The depression has internal wall surfaces that are geometrically configured to cause radiant heat from the furnace interior that impinges on a first internal wall surface to be reflected thereby and to impinge therefrom onto a second internal wall surface. Thus, the heat will be absorbed by the bricks of the lining, and such heat will be emitted thereby from the inner surface thereof.

Abstract: An electroslag remelting plant includes an ingot mold 4 for forming a block from remolten material, at least one consumable electrode 26, a body having at least one vertically driven electrode rod 20 for the advance of the consumable electrode and a hood 33 disposed above the ingot mold which has at least one concentric opening toward the respective electrode axis. In order to limit the volume over the slag the following is provided: The hood 33 is, with respect to its vertical axis "A", subdivided into laterally movable sectors 34, 35 each of which is, at a first sealing joint 41, gas-tight connected with its lower edge 40 to top of the ingot mold 4 as far as possible and with its upper edge 39, at a second sealing joint 42, gas-tight sealed as far as possible with respect to the electrode rod. Further, the hood 33 has an interior of such cross section and height that, in its most elevated position, the top end of the at least one consumable electrode 26 is below the second sealing joint 42 of the hood 33.

Abstract: Disclosed is an ore-smelting electrical furnace bath, in which smelting is accomplished with electrodes buried into the melted slag, comprising an externally cooled metallic jacket, a lining forming the walls and the bottom of the bath, and a sealing layer interposed therebetween. The walls of the bath in the melted slag zone are made from graphite-reinforced refractory blocks having a thickness at which the total thermal resistance of these blocks and of the sealing layer ranges from 0.01 to 0.09 m.sup.2 hr.deg./kcal. The lower portion of the aforesaid walls and the bottom are made from refractory carbon blocks.