Selective recovery of manganese, lead and zinc

  • US 8,518,232 B1
  • Filed: 06/29/2012
  • Issued: 08/27/2013
  • Est. Priority Date: 06/29/2011
  • Status: Active Grant
First Claim
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1. A method for recovering zinc and manganese from a geothermal brine, the method comprising the steps of:

  • providing a geothermal brine, said geothermal brine comprising manganese and zinc;

    selectively removing silica and iron from the geothermal brine to produce a substantially silica free brine;

    adjusting the pH of the substantially silica free brine to a pH suitable to form precipitates of zinc and manganese, such that precipitates of zinc and manganese are selectively formed and other metal precipitates are not formed; and

    separating the zinc and manganese precipitates from the brine.

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