continuous furnace for oxidgemenge, direct high frequency induction using, with very short raffinierzeiten and low energy consumption

摘要

PCT No. PCT/FR92/00199 Sec. 371 Date Nov. 2, 1992 Sec. 102(e) Date Nov. 2, 1992 PCT Filed Mar. 4, 1992 PCT Pub. No. WO92/15531 PCT Pub. Date Sep. 17, 1992.Furnace for the continuous melting of mixtures of oxides by direct induction at high frequency and a very short refining time and with a low energy consumption, comprising an intake (14) and a nozzle (15) for the continuous discharge of oxides into a metal crucible (3) having cold walls heated by a high frequency coil (5), characterized in that the height of the oxide bath is between 2 cm and 20% of the diameter of the metal crucible and in that the furnace hearth (4) is both transparent to the inducing magnetic field and sufficiently cooled to ensure the formation and maintenance of a protective solid crust at the bottom of the crucible.