Use of a rare earth for the removal of antimony and bismuth

a rare earth and antimony technology, applied in the production of electrolytic organic materials, instruments, electrolysis components, etc., can solve the problems of troublesome materials such as arsenic, antimony and bismuth, interfering with the cathodic deposition of metals, etc., and achieves the effects of easy recovery, low cost and prolonged exposure to water

Inactive Publication Date: 2010-10-14
MOLYCORP MINERALS
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Benefits of technology

[0074]As used herein, “insoluble” refers to materials that are intended to be and/or remain as solids in water and are able to be retained in a device, such as a column, or be readily recovere

Problems solved by technology

More importantly, these contaminants may interfere with the cathodic deposition of the metal.
The pr

Method used

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  • Use of a rare earth for the removal of antimony and bismuth
  • Use of a rare earth for the removal of antimony and bismuth
  • Use of a rare earth for the removal of antimony and bismuth

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Embodiment Construction

[0087]One aspect of the present invention uses one or both of insoluble and soluble fixing agents to remove selected target materials from an electrolytic solution. Preferably, the electrolytic solution comprises an aqueous solution. The fixing agent, whether soluble or insoluble, preferably includes a rare earth. Specific examples of such materials for removing target materials include lanthanum (III) compounds, soluble lanthanum metal salts, lanthanum oxide, cerium dioxide, and soluble cerium salts, which have been described in U.S. patent application Ser. No. 12 / 616,653 with a filing date of Nov. 11, 2009, the contents of which is incorporated herein in its entirety by this reference.

[0088]The electrolytic solution can be a rich electrolytic solution formed in unit operation 301 (FIG. 1) and / or an electrolyzed-electrolytic solution formed in an electrolysis cell 303. The rich electrolytic solution is substantially pregnant with a valuable metal to be electrodeposited on an electr...

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Abstract

The invention relates generally to a process for removing one or more contaminants from an electrolytic solution and more particularly to a process for removing the one or more contaminants contained in an electrorefining solution using rare earth metals.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application claims the benefit of U.S. Provisional Application Ser. No. 61 / 168,097 filed Apr. 9, 2009, entitled “Use of High Surface Area Cerium Oxide Media for the Removal of Antimony and Bismuth from Water”, which is incorporated herein by this reference in its entirety.[0002]Cross reference is made to U.S. patent application Ser. Nos. 12 / 616,653, filed Nov. 11, 2009; 11 / 958,602, filed Dec. 18, 2007; 11 / 958,644, filed Dec. 18, 2007; and 11 / 958,968, filed Dec. 18, 2007, each of which is incorporated herein by this reference in its entirety.FIELD OF INVENTION[0003]The invention relates generally to a process for removing one or more contaminants from an electrolytic solution and more particularly to a process for removing the one or more contaminants in an electrorefining solution using rare earth metals.BACKGROUND OF THE INVENTION[0004]Electrometallurgy is a process for recovering a metal from an electrolytic solution using e...

Claims

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Application Information

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IPC IPC(8): C25B1/00C25C1/22C25C1/20C25C1/18C25C1/14C25C1/00C25C1/12
CPCC22B3/24C22B15/0089C25C7/06C25C1/00C22B30/00Y02P10/20
Inventor WHITEHEAD, CHARLES F.HASSLER, CARL R.
Owner MOLYCORP MINERALS
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