Improved mineral comprehensive utilization metallurgical furnace

The utility model discloses an improved mineral comprehensive utilization metallurgical furnace, and relates to solid waste slag smelting equipment. Which comprises a furnace body and a precipitation separation tank, the furnace body is provided with a feeding and discharging box, a hot air box, a combustion box and a smelting furnace, and is characterized in that the cross section of the furnace body is elliptical, and at least two externally connected first communicating pipes are uniformly distributed between an air inlet interlayer of the hot air box and a cooling interlayer of the combustion box. At least ten second communicating pipes leading to the bottom of the smelting furnace are arranged at the lower part of the combustion box; and the lower ends of the second communicating pipes enter the bottom of the smelting furnace through tuyeres with the corresponding number. The utility model has the following remarkable advantages: the daily material processing amount is increased by nearly 80%; the ventil