Method for precipitating rare earth

Method for precipitating rare earth

  • CN 101,798,627 A
  • Filed: 02/09/2009
  • Published: 08/11/2010
  • Est. Priority Date: 02/09/2009
  • Status: Active Grant
First Claim
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1. the method for a precipitating rare earth, it is characterized in that:

  • with Calcium hydrogen carbonate and/or the Magnesium hydrogen carbonate aqueous solution as precipitation agent, with earth solution mixed precipitation, control mother liquor of precipitation of ammonium pH value is 4.5~

    9, make rare earth ion precipitation, and obtain at least a in rare earth carbonate, oxyhydroxide, the subcarbonate through aftertreatment.

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