METHOD OF STORAGE BATTERY LEAD BEARING SCRAP PROCESSING Russian patent published in 1994 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: processing of storage BATTERY lead bearing scrap provides for its desalinizations by solution, that has alkali. Desalinizations is exercised, using sulfur consumption of 110 -120 % from theoretically required amount for sulfate sulfur cleaning. In the case sulfurization is exercised simultaneously with lead scrap suspension division for metal, acid-sulfate and organic fractions. Extracted organic fraction is subjected to lixiviation in alkaline solution with alkali concentration of 40 - 60 g/l with liquid part to hard part ratio as (10 - 15) : 1. Desulfurized metal and acid-sulfate fractions are fed for separate smelting to extract metal lead. After organic fraction lixiviation produced solution is used at scrap separation stage for preparation of suspension and scrap desalinizations. Regeneration of alkali in used solution is exercised by electrodialysis and produced solution of sulfuric acid is used for production of industrial gypsum. EFFECT: method is used in nonferrous metallurgy. 3 cl, 1 dwg, 3 tbl