Abstract: Disclosed is an ore-smelting electrical furnace bath, in which smelting is accomplished with electrodes buried into the melted slag, comprising an externally cooled metallic jacket, a lining forming the walls and the bottom of the bath, and a sealing layer interposed therebetween. The walls of the bath in the melted slag zone are made from graphite-reinforced refractory blocks having a thickness at which the total thermal resistance of these blocks and of the sealing layer ranges from 0.01 to 0.09 m.sup.2 hr.deg./kcal. The lower portion of the aforesaid walls and the bottom are made from refractory carbon blocks.

Abstract: Disclosed is a method of recovering ferronickel from oxidated nickel ores, omprising preparing of a charge accompanied by roasting ore, a reducing agent and flux, followed by electric smelting of the charge. According to the proposed method, roasting of the ore with the reducing agent and roasting of the flux are carried out separately.

Abstract: Disclosed is a method of smelting ferronickel that comprises the steps of justing the depth of the slag bath, the depth of immersion of the electrodes thereinto and the specific power at the electrode surfaces wetted with the slag. According to this method, the depth of the slag bath is maintained within the range of from 0.6 to 1.1 of the electrodes diameter, while the depth of immersion of the electrodes and the specific power at the electrode surfaces wetted with the slag are kept at such levels as to provide a mode approaching to the arc mode, but at the same time to that of the ferronickel bath temperature should be adequately high for the free ferronickel tapping. The depth of immersion of the electrodes into the slag bath of 0.1 to 0.25 of the electrode diameter and the specific power at the electrode surfaces wetted with the slag of 5.0 to 6.5 MW/m.sup.2 are optimal for the hereinabove mentioned mode.