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METHOD FOR MANUFACTURING A VALUABLE-METAL SULFURIC-ACID SOLUTION FROM A WASTE BATTERY, AND METHOD FOR MANUFACTURING A POSITIVE ELECTRODE ACTIVE MATERIAL

  • US 20130312254A1
  • Filed: 08/18/2011
  • Published: 11/28/2013
  • Est. Priority Date: 02/17/2011
  • Status: Abandoned Application
First Claim
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1. A method of manufacturing a valuable-metal sulfuric acid solution from a waste battery, the method comprising:

  • obtaining valuable-metal powder including lithium, nickel, cobalt, and manganese from a waste battery;

    acid leaching the valuable-metal powder with an acid solution including a sulfuric acid solution in a reducing atmosphere to obtain a leaching solution; and

    separating lithium from the leaching solution to obtain nickel, cobalt, and manganese sulfuric acid solutions.

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