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Statistics show that the average utilization rate of tailings in our country is less than 30%, and the piled-up tailings pose serious threats to the environment. The development and application of comprehensive tailings recovery and utilization technologies are one of the key aspects for mines in China to implement clean production and achieve waste-free (or low-waste) mining. How can lead-zinc mine tailings be comprehensively recovered and utilized? The processing technology for lead-zinc ore mainly includes three processes: crushing, grinding, and mineral processing. During the crushing process, three-stage closed-circuit crushing is a modern method suitable for crushing high-hardness lead-zinc ores; it enables the crushing of the ore as well as partial dissociation of its components, thereby improving the efficiency of subsequent grinding ； During the grinding process, the two-stage closed-grinding method is a grinding technique that allows for more thorough grinding of lead-zinc ore ； In mineral processing, the relatively successful new processes that have emerged in recent years are primarily represented by the mixed flotation process. Phase 1: Crushing and screening – The large pieces of lead-zinc ore are evenly fed from the silo, via a vibrating feeder, into jaw crushers or mobile primary crushing units for primary crushing ； The roughly crushed lead-zinc ore is screened using a vibrating screen, and then conveyed by a belt conveyor to a single-cylinder hydraulic cone crusher for further crushing ； The medium-crushed lead-zinc ore material is fed into a multi-cylinder hydraulic cone crusher for fine crushing ； Phase 2: Grinding – The manganese powder with a size of 0–12 mm, which has been screened by the vibrating screen, is evenly fed into the grinder for grinding. It is then screened by a spiral classifier, and any particles that do not meet the requirements are sent back to the grinder for further grinding ； Stage 3: Mineral processing – The manganese powder that meets the requirements for mineral processing is fed into a magnetic separator for strong magnetic separation in order to remove impurities; the resulting manganese powder is then fed into a dryer to be dried, thereby yielding refined manganese powder.