A kind of method of hydrometallurgic recovery lead in cream from waste lead acid battery lead

A kind of method of hydrometallurgic recovery lead in cream from waste lead acid battery lead

  • CN 107,674,977 A
  • Filed: 10/11/2017
  • Published: 02/09/2018
  • Est. Priority Date: 10/11/2017
  • Status: Active Application
First Claim
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1. a kind of method of hydrometallurgic recovery lead in cream from waste lead acid battery lead, it is characterised in that:

  • Comprise the following steps:

    (1) using metallic zinc or metallic lead or hydrogen peroxide as reducing agent, liquor zinci chloridi is that leaching agent leaches lead plaster, after the completion of leachingLeached mud and leachate are obtained by solid-liquor separation;

    (2) metallic zinc is added in the leachate obtained to step (1) and enters line replacement lead, obtain metallic lead and displaced liquid;

    (3) a small amount of electrodeposition of displaced liquid for obtaining step (2), obtains liquid after electric zinc and electrodeposition;

    (4) the electric zinc part obtained step (3) leaches to use as reducing agent return to step (1) (uses metallic lead or hydrogen peroxideMaking step during reducing agent can omit), remaining electric zinc replaces lead as displacer return to step (2);

    (5) sulfate ion that liquid is added in calcium chloride removing solution after the electrodeposition obtained to step (3), calcium sulfate and net is obtainedLiquid after change;

    (6) liquid uses as leaching agent return to step (1) again after the purification for obtaining step (5).

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