The invention provides a
smelting furnace. The
smelting furnace comprises
refractory materials, heat insulating materials, a blower, a pipeline, valves, ignition devices,
fuel supply devices and temperature measuring devices. The
smelting furnace is characterized in that a furnace chamber is provided with a heating chamber and a smelting chamber; the lower part of the heating chamber is communicated with the smelting chamber; the lower part of the smelting chamber is provided with a
hearth; the
hearth is provided with
hearth discharge holes; the upper part of the heating chamber is provided with a heating chamber feeding hole and a heating chamber gas outlet; at least a
flame path is arranged around the inner wall of the smelting chamber; at least an
inlet channel is arranged on the side walls of the
flame paths; and the inlet channels are communicated with the
flame paths. The smelting furnace is energy-saving and environment-friendly, can be used for smelting various metals and alloys, can be used for smelting
aluminium by a fire method and can be used for refining
aluminium alloys. The smelting furnace can adopt any mineral for smelting, can realize carbothermal reduction of any metallic
oxide and can smelt alloys even with soil or garbage, so the smelting furnace can turn stone and soil into gold and is true alchemy. The smelting furnace dispenses with cokes and synchronously completes ironmaking and
steelmaking. The heat generated through
steelmaking is fully utilized and the waste gases are unitedly treated. The smelting furnace can be used for producing glass,
ceramic frits,
sodium silicate and the like. The smelting furnace can adopt various materials, can refine precious elements, does not produce
slag and can bring
metallurgy revolution.