Method for recovering lead oxide from waste lead-acid storage battery
A technology of lead-acid battery and recovery method, which is applied in the direction of lead monoxide and lead oxide, which can solve the problems of long reaction time, complicated process, and low product purity, and achieve short reaction time, low energy consumption, and short process flow Effect
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[0037] Example 1
[0038] 20g PbCO recovered from waste lead-acid batteries and sieved through a 400 mesh sieve 3 Put the powder into the vibrating screen; then heat the furnace to 400°C and keep the furnace temperature stable; then start feeding, the material will fall from the top of the vertical tube and react in the vertical tube. After the flash thermal decomposition reaction is over, the product is taken out. Finally, XRD analysis is performed to determine the product phase. The first container is filled with water to absorb the tiny dust particles generated by flash thermal decomposition, and the second container is filled with sodium hydroxide solution to absorb carbon dioxide generated by flash thermal decomposition. . The results show that the product is all red α-PbO, such as image 3 with Figure 4 Shown, where image 3 It is a real photo of α-PbO, Figure 4 It is the XRD spectrum of α-PbO. After testing, the mass of lead oxide obtained is 19.8 g, and the recovery ra...
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[0039] Example 2
[0040] 20g PbCO recovered from waste lead-acid batteries and sieved through a 400 mesh sieve 3 Put the powder into the vibrating screen; then heat the furnace to 550°C and keep the furnace temperature stable; then start feeding, the material will fall from the top of the vertical tube and react in the vertical tube. After the flash thermal decomposition reaction is over, the product is taken out. Finally, XRD analysis is performed to determine the product phase. The first container is filled with water to absorb the tiny dust particles generated by flash thermal decomposition, and the second container is filled with sodium hydroxide solution to absorb carbon dioxide generated by flash thermal decomposition. . The results show that the product is all yellow β-PbO, such as Figure 5 with Image 6 Shown, where Figure 5 The actual photo of β-PbO, Image 6 It is the XRD spectrum of β-PbO. After testing, the mass of lead oxide obtained is 19.6 g, and the recovery...
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