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METHOD FOR RECOVERING LEAD OXIDE FROM WASTE LEAD PLASTER
METHOD FOR RECOVERING LEAD OXIDE FROM WASTE LEAD PLASTER
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机译:从废铅膏中回收氧化铅的方法
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摘要
A method for recovering lead oxide from a pre-desalted lead plaster, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and reacting all of PbO therein with the complexing agent to generate lead complexing ions, obtaining a lead-containing solution and filter residue; b. adding a precipitant to the lead-containing solution, and reacting the precipitant with the lead complexing ions to generate a lead salt precipitate and the regenerated complexing agent; and c. calcinating the lead salt precipitate to obtain lead oxide, and regenerate the precipitant. The final recovery rate of lead oxide of the method can reach 99% or more.
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