Method for enriching zinc through microwave carbon thermal reduction and synchronous vulcanization of low-grade oxysulfide lead zinc ore

The invention discloses a method for enriching zinc through microwave carbon thermal reduction and synchronous vulcanization of low-grade oxysulfide lead zinc ore, and belongs to the technical field of non-ferrous metal metallurgy, the pretreated low-grade oxysulfide lead zinc ore and a reducing agent are uniformly mixed, microwave heating is performed under the inert gas condition, and the temperature is reduced to the room temperature after the reaction is finished. According to the method, the low-grade oxygen-sulfur-lead-zinc ore and a reducing agent are placed in a microwave reaction system, zinc ferrite is reduced into ferroferric oxide and zinc oxide under high-temperature roasting in an inert gas atmosphere, and then the zinc oxide is selectively vulcanized by SO2 generated by thermal decomposition of sulfate existing in the ore, so that zinc sulfide is enriched; the reactions are carried out in the same reaction system at the same time, and compared with the prior art, the process is more simplified,