SHAFT MELTING FURNACE

FIELD: metallurgy. ^ SUBSTANCE: invention refers to metallurgy, particularly to assemblies for melting of metals. The shaft furnace consists of a shaft made in form of two truncated cones with big foundations coupled by means of a cylinder, of a device for loading of charge materials, the said device is made in form of two charging small and bigger truncated cones; the furnace also consists of a device for heating and of hearth. The ratio of diameters of the cylinder and smaller foundation of the lower cone of the shaft is 1.10-1.35. The ratio of diameters of the cylinder and the smaller foundation of the upper cone of the shaft is 1.05-1.25. The ratio of the height of the cylinder to the height of the upper and lower cones of the shaft is equal 1:(3.2-3.8):(1-1.2). The angle of tilt of the contact surface of the small and bigger loading truncated cones is 53. The heating device is made as three plasmatrons, arranged in the dome of the furnace hearth along the radius per 120 and located at the angle of 40-50 to the axis of the furnace. ^ EFFECT: increased efficiency of furnace. ^ 1 dwg