PROCESSO IDROMETALLURGICO PER RICUPERARE IN FORMA METALLICA PURA IL PIOMBO CONTENUTO NELLA MASSA ATTIVA DELLE BATTERIE ESAUSTE.

摘要

The desulphurized paste is leached with an acid suitable for the subsequent electrowinning, with an amount of hydrogen peroxide necessary to reduce all of the existing PbO2 being added. A high extraction yield is obtained, without foreign salts being added to the electrolyte, which is then submitted to an electrolysis step, to recover Pb as cathodes.