The utility model relates to an ore dressing
system for complex gold-silver mixed lead-
zinc polymetallic ore, which comprises a first-section mill, a
discharge port of the first-section mill is connected with a feed port of a spiral classifier, a sand setting ore
discharge port of the spiral classifier is connected with the feed port of the first-section mill, and an overflow ore
discharge port of the spiral classifier is connected with a feed port of a 1 # stirring
barrel; a discharging port of the first stirring
barrel is connected with a feeding port of the second stirring
barrel, a discharging port of the second stirring barrel is connected with an ore feeding
pipe of the first lead roughing
machine, a concentrate port of the first lead roughing
machine is connected with an ore feeding
pipe of the first lead classificator through the first pump
pool and the first pump, and the first lead classificator is sequentially connected with the second lead classificator and the third lead classificator. According to the embedded particle size of the lead-
zinc ore and the
oxidation rate of lead, the mineral
separation system with stage
grinding and stage lead flotation, reselection and
zinc flotation is adopted for separation of complex mixed lead-zinc polymetallic ore containing gold and silver, the practicability is high, the separation and
recovery effect is remarkable, and the
recovery rate of the mixed lead-zinc ore can be effectively improved.