Bloom Energy Corporation

Justin McAllister

Christopher Jeffrey Hartley

Lunzhi Liao

Andrew Sarmiento

Wayne Werneke Hazen

David R Baughman

Brook Forest Porter

Michael Shang-Yu Yang

Christel Maria Angelina Bemelmans

Pavel Federovich Belits

Timothy James Lanyk

A method of selectively removing impurities from a scandium-containing feed solution includes contacting an aqueous scandium-containing solution with an organic solvent stream containing an extractant, thereby forming a loaded organic solvent stream containing the impurity or impurities while leaving the scandium in the raffinate. The aqueous stream containing the scandium is washed, diluted and has inorganic salts added before being contacted with a second organic solvent stream to extract the scandium selectively, and followed by stripping the scandium from the scandium-containing loaded organic extractant stream by adding oxalic acid to the loaded organic extractant stream to form scandium oxalate.

Method of refining of scandium oxide from concentrates using solvent extraction

A method for selectively removing scandium from a scandium-containing feed solution includes contacting the scandium-containing feed solution with a solvent stream in plural stages using cross current extraction, in which the solvent is loaded with at least a portion of the scandium from the feed solution, and/or ion exchange, and separating the loaded solvent from remaining scandium-containing feed solution.

Methods of recovering scandium from titanium residue streams

Growing community of inventors

Sunnyvale, CA, United States of America

Justin McAllister