In the smelting and blowing process of lead bismuth,miscible phase is easily formed and difficult to be separa-ted,which leads to the accumulation of the produced lead bismuth alloy or low price for export.The wet separation process of pelletizing and oxidizing acid leaching for recovery of lead and bismuth was carried out by spraying metal liquid with cold water,and oxalic acid was added to the leaching solution to prepare lead oxalate.The main factors affecting the leaching rate of lead and bismuth were optimized.The reaction temperature was 80～90℃,the reaction time was 120 min,the stir-ring rate was 250 r/min,and the initial concentration of acetic acid was 500 g/L.The leaching rates of Pb and Bi reached 96%and 93%respectively,and the purity of lead oxalate product prepared by adding oxalic acid in theoretical amount reached 99.3%,and the wet recovery of lead bismuth alloy was realized.
lead-bismuth alloycold water injectionoxidative acid leachinghydrolysis reactionlead oxalate
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