The invention relates to a
smelting furnace, comprising a furnace chamber, fire-resistant materials, insulation materials, a fan, channels, an ignition device, a
fuel supply device and a discharging device. At least one air inlet is arranged on the side wall of the furnace chamber, at least one air inlet passage is connected with the air inlet, and the air inlet passage is connected with the fan; the side wall of the furnace chamber is provided with a plurality of fire paths, and the air inlet is communicated with the fire paths; the furnace chamber is provided with a heating chamber and a
smelting chamber, wherein 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, at least one feeding inlet of the heating chamber is arranged on the upper part of the heating chamber, and at least one air outlet is arranged on the upper part of the heating chamber; at least one
discharge port of the
hearth is formed in the
hearth; and the
discharge port of a smelting tank is provided with the discharging device. The invention is characterized in that a plurality of fuels and raw
coal can be used in the smelting furnace; smelting iron and smelting steel can be synchronously completed; steel
slag is no needed to be removed; the heat produced by smelting steel is fully utilized, waste gases are uniformly treated; smelting iron,
casting iron, smelting steel and
casting steel can be directly carried out by using ores and the like; glasses,
ceramic clinker,
sodium silicate and the like can be produced in the smelting furnace; and noble elements can be refined, refining can be achieved and the revolution of materials is brought out. The invention has the advantages of saving energy, protecting environment and smelting iron without
coke.