Study on Electrode-deposited Zinc After Workshop Leaching Solution Purification with Zinc-containing Pyrolytic Paint Residue
The paint residue is subjected to high-temperature pyrolysis treatment to remove harmful organic components,and the pyrolyt-ic residue was used to replace metal zinc to remove Pb and Cd impurities.The purified leaching solution obtained was further used to produce elec-trode-deposited zinc.The results showed that the concentration of lead and cadmium were reduced from 796 mg/L and 48 mg/L to 1.2 mg/L and 0.8 mg/L,respectively,by three-stage replacement reaction at 70℃with 11 times the theoretical content of pyrolytic paint residue,remove lead and cad-mium impurities.In the electrode deposition operation after purification,the index is closed to that of workshop production of electrode-deposited zinc.The research provides a new direction for the resource utilization of zinc-containing paint slag.
Zn-containing paint slagpyrolysiselectrode-deposited Znworkshop leaching solutionimpurities removal by replacement
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