NOVELTY - A closed-loop recycling method for waste lead-acid battery comprises (A) primary crushing waste lead-acid battery, (B) performing magnetic separation, (C) secondary crushing, (D) separating via waterpower for first time, (E) separating via vortex, (F) crushing for third time, (G) separating by waterpower for second time, (H) desulfuring lead slime, (I) filtering via pressure, (J) smelting, (K) refining, and (L) preparing end product. The step (L) comprises preparing lead liquid to lead powder of 40-45 meshes via Barton lead powder machine or preparing to grid for storage battery.    USE - Closed-loop recycling method for waste lead-acid battery.    ADVANTAGE - The method solves problem of low recovery efficiency and heavy pollution caused by outmoded processing equipment. It has high degree of mechanical automation, is free of pollution, enhances recovery rate of materials, has recovery rate of lead of 98%, has recovery rate of plastic is 95% and utilization rate of resources of 98%.    DETAILED DESCRIPTION - Closed-loop recycling method for waste lead-acid battery comprises (A) primary crushing waste lead-acid battery, (B) performing magnetic separation, (C) secondary crushing, (D) separating via waterpower for first time, (E) separating via vortex, (F) crushing for third time, (G) separating by waterpower for second time, (H) desulfuring lead slime, (I) filtering via pressure, (J) smelting, (K) refining, and (L) preparing end product. The step (A) comprises providing waste lead-acid battery with grabhook and sending to feeding funnel; sending to primary quartering hammer via feeding conveyor and processing primary crushing, where size of crushed mixture is 70-75 mm; and cleaning and separating crushed mixture on first vibrating screen, and introducing lead slime and acid liquor obtained to storage tank. The step (B) comprises delivering mixture on first vibrating screen to a conveyor belt with electromagnetic separator, where electromagnetic separator separates ferromagnetism metal in mixture. The step (C) comprises introducing mixture separated by electromagnetic separator to secondary quartering hammer and processing secondary crushing, where size of crushed mixture is 25-30 mm; and cleaning and separating mixture on second vibrating screen and sending lead slime and acid liquor generated in process to storage tank. The step (D) comprises delivering mixture on vibrating screen to first hydroseparator via a first spiral conveyor, where first hydroseparator can separate out light plastic and lead grid from mixture according to different specific gravity of material in water. The step (E) comprises sending separated mixture to second spiral conveyor with vortex separator, where vortex separator can separate out crushed metal containing copper from mixture; and cleaning and separating the mixture from the third vibrating screen and sending lead slime and flushing liquor generated in process to a settling tank. The step (F) comprises crushing mixture from third vibrating screen via crusher, where size of crushed mixture is 3-4 mm; and cleaning and separating mixture crushed for third time on fourth vibrating screen and sending lead slime and flushing liquor generated in process to settling tank. The step (G) comprises delivering mixture from fourth vibrating screen to the second hydroseparator, where hydroseparator can separate out heavy plastic and surplus lead slime from mixture according to different specific gravity of each material in water; and sending separated lead slime to settling tank. The step (H) comprises weighing lead slime in storage tank and the settling tank via weighing sensor, and sending to desulfuration tank; and adding 24-26% of sodium carbonate (99.2 wt.%), and keeping on stirring to desulfurize, where reaction temperature is 35-45 degrees C and reaction time is 50-70 minutes. The step (I) comprises sending reacted lead slime to pressure filter and washing, performing extrusion and drying at 50-60 degrees C to obtain dried solid lead slime, where sodium sulfate solution can be recycled and preparing sodium sulfate crystals. The step (J) comprises weighing solid lead slime and lead grid via weighing sensor, sending to converter and smelting, adding 3.5-4.0% of scrap iron, 1.5-2.0% of glass, 3.0-4.0% of coal dust and 1.0-1.5% of sodium carbonate, where temperature for smelting is 800-1000 degrees C, and time for smelting is 22-26 hours. The step (K) comprises delivering smelt lead liquid to kiln and refining, where temperature for refining is 850-950 degrees C, and time for refining is 30-40 minutes. The step (L) comprises preparing lead liquid to lead powder of 40-45 meshes via Barton lead powder machine or preparing to grid for storage battery via tandem rolling or preparing to lead ingot via pig molding machine.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating the closed-loop recycling method for waste lead-acid battery (Drawing includes non-English language text).