METHOD OF PROCESSING OF THE WASTE LEAD STORAGE BATTERIES Russian patent published in 2005 - IPC

FIELD: electrochemical industry; processing of waste lead storage batteries.

SUBSTANCE: the invention is dealt with the methods of electrochemical productions, in particular with processing waste storage batteries. Then the electrolyzer is filled up with a solution 2М of sulphaminic acid and the unbroken leaden plates with an active mass are dipped into it for a day. Then they fix a cathode made out of a pure lead and the selected lead plates from the waste lead storage batteries are used in the capacity of an anode. Then the system is connected to a direct current source. Further the process of electrowinning of lead is conducted at simultaneous dissolution in it of unbroken leaden plates at the anode current density of 10-20 mA/cm² with provision of an increase of productivity of the process at the expense of absence of the labor-consuming production operations. The sulphaminic electrolyte used in the process is harmless, whereas other electrolytes are toxic. Antimony does not dissolve in it and passivation of anodes in it is minimum. The method also ensures practically full utilization of lead from the waste lead storage batteries.

EFFECT: the invention ensures an increase of the process productivity, safety and full utilization of lead from the waste lead storage batteries.

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