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US 11,254,584 B2Granted
Method for inhibiting extractant degradation of DSX process through metal extraction control
AssigneeKorea Resources Corporation
InventorsJeon Woong An, Youn Kyu Yi, Young Hun Kim
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Abstract
Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.
Claims6
A method for inhibiting extractant degradation in a DSX process, the method comprising steps of:
- (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry;
- and
- (b) adding sulfuric acid to the copper solvent extraction-raffinate from which iron (Fe) and aluminum (Al) have been precipitated to adjust the pH thereof.
Dependencies are inferred from the claim text.