Waste heat utilization device in secondary lead smelting process

The utility model relates to the field of waste heat recycling devices, in particular to a waste heat utilization device in a secondary lead smelting process. Comprising a material receiving box, the rear end of a bottom plate of the material receiving box inclines downwards, a discharging opening is formed in the lower end of the rear side wall of the material receiving box, a sealing plate for sealing the discharging opening is arranged on the rear side wall of the material receiving box, a plurality of hollow heat exchange strips are fixed in the material receiving box, and an air distribution box is fixed to the lower end of the material receiving box and communicates with the heat exchange strips; a collecting box is fixed to the rear side of the upper end in the material collecting box and communicates with the upper ends of the heat exchange strips through branch pipes, a feeding port is formed in a top plate of the material collecting box, a feeding box communicating with the feeding port is fixed to