Lead-zinc ore is a complex symbiotic metal ore with fine disseminated mineral particles and close symbiosis of lead, zinc and gangue minerals. Traditional rough crushing processes cannot fully dissociate lead and zinc monomers, resulting in low separation efficiency of flotation equipment, serious mutual mixing of lead and zinc concentrates and low comprehensive recovery rate of resources.

Flotation beneficiation has strict requirements on ore particle size uniformity. Too coarse particles are not easy to dissociate and float, while too fine particles are easy to be lost with tailings. Graded crushing and precise particle size control are the core prerequisites for efficient lead-zinc flotation separation.

SMP professional lead-zinc ore graded crushing solution adopts three-stage crushing and closed-circuit screening system. The staged crushing mode realizes gradual dissociation of lead-zinc minerals, strictly controls the feeding particle size of flotation equipment within the optimal range, and avoids under-crushing and over-crushing. The optimized crushing cavity protects fine-grained lead-zinc monomers from loss.

After crushing process optimization, the dissociation degree and flotation efficiency of lead-zinc ore are significantly improved, the grade and recovery rate of lead and zinc concentrates are increased synchronously, and the mutual inclusion rate of mixed concentrates is reduced. This technology is widely used in complex lead-zinc symbiotic ore processing projects, greatly improving the comprehensive utilization value of mineral resources.

Keywords: lead-zinc ore crushing, lead zinc flotation efficiency, metal ore graded crushing, complex symbiotic ore processing, improve mineral recovery rate