Systems and methods for the hydrometallurgical recovery of lead from spent lead-acid batteries and the preparation of lead oxide for use in new lead-acid batteries

摘要

The present disclosure relates generally to recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A lead recovery system includes a first reactor configured to receive and mix a lead-bearing material and a first carboxylate source to yield a first mixture, wherein the first mixture includes a first lead carboxylate that is dissolved in a liquid component of the first mixture. The system includes a second reactor configured to receive and mix the liquid component of the first mixture and a second carboxylate source to yield a second mixture, wherein the second mixture includes solid particles of a second lead carboxylate. The system includes a third reactor configured to receive and mix the solid particles of the second lead carboxylate and a hydroxide solution to yield a third mixture, wherein the third mixture includes solid particles of lead oxide.