FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be applied to the induction melting of any electrically conductive material, including a corium. Electromagnetic induction furnace comprises a crucible for containing a molten mixture and a cooling circuit for cooling the crucible walls with a heat transfer fluid that is supercritical CO2. Method for cooling the furnace includes circulating supercritical CO2 under pressure in the range from its critical pressure Pc of the order of 73 bar to a pressure of 100 bar and at a temperature in the range from its critical temperature Tc of the order of 31 °C at the inlet of said at least one cooling circuit to a temperature of 50 °C at the outlet of said cooling circuit while providing specific heat Cp of supercritical CO2 at least equal to 4 kJ kg-1. For melting the mixture in the furnace, alternating current is passed through the turns of at least one inductor, simultaneously at least at two different frequencies, one of which is suitable for melting said at least one metal and the other for melting said at least one oxide.
EFFECT: invention makes it possible to create a cooling circuit with a heat transfer fluid that is not electrically conductive to prevent any interference due to electromagnetic induction.
14 cl, 7 dwg
