Abstract: The invention relates to a method and a device for melting or processing metal. The metal material is batched into a chamber (1) and circulated from one chamber to another (3, 5, 10, 11, 15, 18) with simultaneous melting under the effect of thermal radiation from the chamber lids. One or more pumps act on the pressure above the molten metal in one or more pump chambers (10, 11), connected with a melt chamber (5) and with a splash chamber (18, 15), from where the melt is discharged or recycled. The object of the invention is to upgrade melt quality by reducing turbulence in the melt chambers. This object has been achieved by transferring, at an increased pressure in the pump chamber, a substantially greater amount, approx. three to fifteen times more melt per time unit from each pump chamber (10, 11) to the splash chamber (18, 15) than from the same pump chamber to the splash chamber (5).

Abstract: Foundry furnace particularly for light non-ferrous metal, such as zinc or aluminum, including a longitudinal chamber (4, 8, 11, 12) made of a heat-resistant material, including close to one end an inlet for scrap (18) and/or bars (5), a slag outlet (5,6), an outlet flow passage (13) including a dispensing opening (14) at the other end, and heating elements for melting the metal, including direct radiating resistance elements (3, 3') in the cover of the chamber (4, 12) and vertically free moving dip-elements (9) extending downwardly from the cover of the chamber (8) for flowing on and into the melt metal in the chamber (8). According to the invention the height of the outlet flow passage is around 1/3-2/3 of the height of the chamber (8, 12), and the active part (7) of the dip-elements in the vertical direction at most equals the distance of the bottom (16) of the outlet flow passage (13) from the bottom (17) of the chamber.