Invention Grant
- Patent Title: Method for producing a solid scandium-containing material of enhanced scandium content
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Application No.: US14650923Application Date: 2013-12-10
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Publication No.: US09970078B2Publication Date: 2018-05-15
- Inventor: David Gregory Nakon
- Applicant: Scandium Pty Ltd
- Applicant Address: AU
- Assignee: Element 21 Pty Limited
- Current Assignee: Element 21 Pty Limited
- Current Assignee Address: AU
- Agency: Hartman Global IP Law
- Agent Gary M. Hartman; Domenica N. S. Hartman
- Priority: AU2012905510 20121217
- International Application: PCT/AU2013/001445 WO 20131210
- International Announcement: WO2014/094037 WO 20140626
- Main IPC: C22B59/00
- IPC: C22B59/00 ; C22B3/04 ; C22B3/44 ; C01F17/00 ; C07C51/41 ; C07F5/00 ; C22B7/00

Abstract:
A method for producing a solid scandium-containing material comprises providing an aqueous solution containing carbonate ions, carbamate ions, hydrogen carbonate (HCO3+) ions, or mixtures thereof, contacting the aqueous solution with a scandium containing material containing one or more impurities to produce a scandium-loaded solution and a depleted scandium containing material, separating the depleted scandium containing material from the scandium loaded solution, treating the scandium loaded solution to cause precipitation of a solid scandium-containing material while avoiding or minimizing precipitation of impurities present in the aqueous solution, and separating the solid scandium-containing material from the solution. In another embodiment, a high purity scandium containing is produced by contacting a solid material containing scandium with an acid to form a scandium loaded solution, separating the scandium loaded solution from any solids, adding additional acid to the scandium loaded solution to reduce the pH and precipitating a high purity scandium oxalate material by adding oxalic acid to the solution.
Public/Granted literature
- US20150368755A1 METHOD FOR PRODUCING A SOLID SCANDIUM-CONTAINING MATERIAL OF ENHANCED SCANDIUM CONTENT Public/Granted day:2015-12-24
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