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Title:
METHOD FOR RECOVERING BASE METALS FROM GEOTHERMAL BRINE
Document Type and Number:
Japanese Patent JPH05195105
Kind Code:
A
Abstract:

PURPOSE: To provide an extracting method for recovery of zinc from a base metal-contg. geothermal brine.

CONSTITUTION: A first insoluble org. extraction solvent having a selective property to extract of zinc is brought into contact with the brine. Zinc is selectively extracted in the form of a zinc chloride aq. soln. from the org. extraction solvent and, if necessary, the pH value of the zinc-contg. aq. soln. is adjusted to a concn. at which the soln. to extract the zinc is adjusted by a second org. extraction solvent. Further, the zinc-contg. extraction solvent is formed by using the second insoluble org. extraction solvent having a selective property to extract of zinc and extracting zinc from the aq. soln. Zinc is removed from the zinc-contg. extraction solvent by using an ample amt. of sulfuric acid. Further, zinc is electrolytically collected from an electrolyte to form substantially pure zinc.


Inventors:
UIREMU PII SHII DEYUIBUESUTEIN
Application Number:
JP24492492A
Publication Date:
August 03, 1993
Filing Date:
September 14, 1992
Export Citation:
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Assignee:
B H P U T A H INTERNATL INC
International Classes:
C22B19/20; B01D11/04; C22B3/32; C22B13/00; C25C1/16; C22B; (IPC1-7): C22B19/20; C25C1/16
Attorney, Agent or Firm:
Yosuke Goto (2 outside)



 
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