Cradle to Gate
Identity ID
247ae273-a117-405c-ba34-4de7bfdd54ed
Materials
Associated ID
bb51e399-b0ee-49c9-861a-1f118959eb9d
Included activities starts
Included activities ends
Description
Spent lead-acid batteries generally come from scrapped cars and electric bicycles, and lead-acid batteries can be divided into starting (liquid-rich) lead-acid batteries, power (liquid-lean) lead-acid batteries, and other types according to the difference in structure and use. The waste lead-acid battery contains 30%~40% (mass) waste lead paste, the main component is PbSO4, PbSO4 solubility is very low, and it is not soluble in common acids such as sulfuric acid, hydrochloric acid and nitric acid, carbonate and alkali are the most commonly used reagents for the desulfurization of waste lead paste.
In this dataset, sodium carbonate and sodium hydroxide are added to the lead paste as desulfurizers for desulfurization, followed by pressure filtration. The filtrate can be recovered from anhydrous sodium sulfate, which produces slag, water vapor and centrifugal separated wastewater.
This dataset is suitable for the desulfurization process of lead paste in spent lead-acid batteries.
Activity Description
This dataset represents the desulfurization process of lead paste from spent lead-acid batteries, involving the reaction with sodium carbonate solution and sodium hydroxide solution added into the lead sludge, followed by press filtration, including the consumption of energy and energy media.
Process Description
Desulfurize the separated lead paste first by adding sodium carbonate and sodium hydroxide to the lead sludge for reaction, followed by pressing filtration.
Time period
2021
2026
Geography
China
Geography comment
Guizhou Province
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Desulfurization treatment of lead paste using sodium carbonate and anhydrous sodium sulfate