REMELTING OF EXTRUDED BRIQUETTES CONTAINING OXIDES AND SOLID CARBON IN INDUCTION CRUCIBLE FURNACE Russian patent published in 2014 - IPC C21C5/52 B28B3/20 B29C47/02 

FIELD: metallurgy.

SUBSTANCE: this method exploits extruded briquettes. These briquettes contain oxides and solid carbon. Electrically conducting charge is fused by arc discharge initiated between said charge and graphite electrode. Said briquettes are loaded in portions around said graphite electrode to make a protective layer between electric arc and crucible wall. Then, inductor is switched on and, as briquettes are heated in liquid molten pool and reductive metallisation develops, solid electrode is used to decrease the electric arc discharge power. Now, inductor power is increased as active slag is formed on molten pool, its temperature exceeding that of molten pool.

EFFECT: improved performances of remelting.

4 cl, 3 ex