Method for recovering scandium values from leach solutions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 16, 2019
Grant Date -
Nov 1, 2018
app pub date -
Apr 26, 2018
filing date -
Dec 22, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for isolating scandium values is provided. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to an acid leaching process, thereby obtaining a leachate, wherein the pH of the leachate is less than 1.5; extracting scandium values from the leachate with an organic solvent, thereby obtaining a scandium-loaded organic solvent, wherein the leachate contains iron and scandium ions, and wherein the organic solvent contains a primary amine; stripping the scandium values from the scandium-loaded solvent with a stripping solution containing an acid and a salt, thereby obtaining a scandium-loaded stripping solution, wherein the acid is selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid and phosphoric acid, wherein the salt is selected from the group consisting of alkali chlorides, alkali earth chlorides, alkali nitrates, alkali sulfates, alkali phosphates, ammonium chlorides, ammonium nitrates, ammonium sulfates and ammonium phosphates, and wherein the salt comprises a cation selected from the group consisting of Na, K, Li, NH4 and Mg; and processing the scandium-loaded stripping solution to yield scandium oxide.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully