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The existing forms of antimony impurities in lead paste were analyzed, and the migration and transformation rules of antimony impurities in the process of recovering waste lead paste by leaching with organic acid system were studied. The experimental results show that when the dosage of leaching agent is constant, the more impurities transfer to the filtrate with the extension of reaction time. The conversion rate of antimony is relatively high, reaching about 97.0%. Cycle experiments show that with the increase of cycle times, the antimony content in the liquid phase decreases. By the third cycle, the proportion of antimony entering the filtrate is only 38%, and most antimony impurities enter the solid phase.

Study on Transformation and Migration of Antimony Impurity in Wet Recovery of Waste Lead Paste