Desulfurization and transformation method for waste lead accumulator regenerative lead

Abstract

A kind of desulfitation transformation method to regenerate Pb with waste chloride accumulator, it contains a procedure to break waste chloride accumulator, the liquid and the solid in the Pb mud fluid after breaking will be separated, and wet lead slime can be gained. The wet lead slime will be put into a desulfurizer. And sodium carbonate will be also added as desulfurating agent, then they will be fully agitated, they will fully react. The liquid and solid will be separated after stewing, The sediment lead carbonate and liquid sodium sulfate can be gained, the later will be put into a reactor, and barium carbonate will also be put in, then they will be agitated, and reacted fully, they will be stew, and then the liquid and solid of them will be separated, the sediment barium sulfate and liquid sodium carbonate can be gained, and the later will be delivered into the desulfurizer to recycle as desulfurating agent. This patent translates the reaction between sodium sulfate and barium carbonate in the remained liquid, recycle the desulfurater sodium carbonate. It not only resolves the problem how to deal with the sodium sulfate in the desulfitation transformation technology, but also resolves the regeneration and the recycle of desulfurater sodium carbonate.

Description

Technical field: [0001] The invention belongs to the field of chemical industry, in particular to a process for recovering lead, in particular to a desulfurization conversion method for waste lead storage batteries. Background technique: [0002] 80% of the recycled lead raw materials come from waste lead batteries, and waste lead batteries are classified and sorted into lead grids, lead mud, PVC shells, plastics, and waste acids through the MA crushing and sorting system. There is a certain amount of lead sulfate in the lead sludge. To completely restore the lead in the lead sulfate, the temperature needs to be above 1200°C. Not only will it consume a lot of energy, but also a large amount of lead will be evaporated into the furnace gas, and the dust will be collected and smelted repeatedly. , Repeated waste of energy, the investment, operation, maintenance and energy costs of these environmental protection equipment for handling these lead-containing furnace gases are very...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a desulfurization conversion method for regenerated lead in waste lead storage batteries. The desulfurization conversion method for regenerated lead in waste lead storage batteries needs to solve the problem of how to deal with the by-product sodium sulfate produced after processing waste lead storage batteries in the prior art. technical problems, as well as the technical problems of complex and costly processing of waste lead-acid batteries

Images