1 – reaction chamber; 2 – water–cooled lid; 3 – water–cooled bottom; 4 – rod electrodes (3 pcs.); 5 – rod locking electrode; 6 – pole tip; 7 – series winding; 8 – power source; 9 – additional power source for heating the jet; 10 – device for removing the melt (letka); 11 – lined bottom of the chamber; 12 – pipe into the reaction chamber for feeding raw materials; 13 – lining