公开(公告)号：US20230192506A1

公开(公告)日：2023-06-22

申请号：US18062318

申请日：2022-12-06

Applicant: IMPERIAL MINING GROUP LIMITED

Inventor： Yemi OYEDIRAN ,  Daniel RISCHE ,  Christian GRAF

IPC: C01F17/247 ,  C01F17/20 ,  C01F17/13 ,  C01F17/212 ,  C22B59/00 ,  C22B3/12 ,  C22B3/22 ,  C22B3/10

CPC classification number: C01F17/247 ,  C01F17/20 ,  C01F17/13 ,  C01F17/212 ,  C22B59/00 ,  C22B3/12 ,  C22B3/22 ,  C22B3/10

Abstract: Despite the abundance of scandium, its commercial applications continue to be limited by the absence of reliable, secure, stable and long-term production. The subject-matter disclosed herein provides for a method for extracting Rare Earth Elements (REE), scandium and/or Rare-Earth Oxides (REO) from ore and mineral concentrates, the method comprising: providing Rare Earth Elements (REE) and/or scandium bearing feedstock; a high-pressure caustic (HPC) leaching step, comprising leaching the feedstock in an alkali solution at a first temperature for a target period of time and at a given pressure to produce a leachate slurry; extracting a solid residue from the leachate slurry; leaching of the solid residue in a mineral acid to form a primary leach solution; extracting scandium and/or REE from the primary leach solution; and/or precipitating REE remaining in the raffinate to form a mixed REE-carbonate to thereby facilitate the extraction of REO.

公开(公告)号：US11807544B2

公开(公告)日：2023-11-07

申请号：US17940351

申请日：2022-09-08

Applicant: Korea Institute Of Geoscience And Mineral Resources

Inventor： Ho Seok Jeon ,  Shun Myung Shin ,  Dong Ju Shin ,  Dong Seok Lee ,  Sung Ho Joo

IPC: C01F17/13 ,  C01G31/00 ,  C01F17/282 ,  C22B3/42 ,  C22B34/22 ,  C22B61/00

CPC classification number: C01F17/13 ,  C01F17/282 ,  C01G31/003 ,  C22B3/42 ,  C22B34/225 ,  C22B61/00 ,  C01P2006/80

Abstract: Provided are a selective recovery method of vanadium and cesium from a waste sulfuric acid vanadium catalyst by a hydrometallurgical method including water leaching, solid-liquid separation, vanadium solvent extraction, vanadium selective stripping, and cesium alum production, and a high-quality vanadium aqueous solution and cesium alum produced thereby.

公开(公告)号：US20230402200A1

公开(公告)日：2023-12-14

申请号：US18239013

申请日：2023-08-28

Applicant: TRIUMF Inc. ,  THE UNIVERSITY OF BRITISH COLUMBIA

Inventor： Andrew Kyle Henderson ROBERTSON ,  Hua YANG ,  Stefan ZEISLER ,  Paul SCHAFFER

IPC: G21G1/00 ,  C01F17/13 ,  B01D15/18 ,  B01D15/36 ,  C01B15/047 ,  G21G1/10

CPC classification number: G21G1/001 ,  C01F17/13 ,  B01D15/1871 ,  B01D15/362 ,  B01D15/363 ,  C01B15/0475 ,  G21G1/10 ,  G21G2001/0094 ,  G21G2001/0089

Abstract: A method of separating actinium and/or radium from proton-irradiated thorium metal. The thorium metal is irradiated to produce isotopes including thorium, actinium and/or radium. The resultant product is dissolved in solution and a selective precipitant is used to precipitate a bulk portion of the thorium. The precipitated thorium can be recovered. Chromatography is carried out on the remaining solution to remove residual thorium and to separate the actinium from the radium.

公开(公告)号：US20230356105A1

公开(公告)日：2023-11-09

申请号：US18027283

申请日：2021-11-12

Applicant: Ustav Organicke Chemie a Biochemie AV CR V.V.I.

Inventor： Miloslav POLASEK ,  Kelsea Grace JONES ,  Tomas DAVID

IPC: B01D9/00 ,  C01F17/13 ,  C07D257/02 ,  C22B59/00 ,  B01D15/32 ,  B01D61/14

CPC classification number: B01D9/005 ,  C01F17/13 ,  C07D257/02 ,  C22B59/00 ,  B01D15/327 ,  B01D61/145 ,  B01D2009/0086

Abstract: The present invention related to the use of compounds of general formula (I) for separations of rare earth elements (lanthanides) by precipitation, wherein R is selected from the group consisting of H; —CH2COOH; R2, R3, R4, R5 and R6 areindependently selected from the group consisting of H; OH; —NO2; —COOH; phenyl; and/or R2 and R3 or R3 and R4 or R4 and R5 or R5 and R6 The invention further relates to a method of separation of rare earth elements by precipitation. together with two neighbouring carbon atoms of the aromatic ring form a six-membered aromatic ring.

公开(公告)号：US11798700B2

公开(公告)日：2023-10-24

申请号：US17040652

申请日：2019-03-26

Applicant: TRIUMF Inc. ,  THE UNIVERSITY OF BRITISH COLUMBIA

Inventor： Andrew Kyle Henderson Robertson ,  Hua Yang ,  Stefan Zeisler ,  Paul Schaffer

IPC: G21G1/00 ,  G21G1/10 ,  B01D5/00 ,  C01B15/047 ,  C01F17/13 ,  B01D15/18 ,  B01D15/36

CPC classification number: G21G1/001 ,  B01D15/1871 ,  B01D15/362 ,  B01D15/363 ,  C01B15/0475 ,  C01F17/13 ,  G21G1/10 ,  G21G2001/0089 ,  G21G2001/0094

Abstract: A method of separating actinium and/or radium from proton-irradiated thorium metal. The thorium metal is irradiated to produce isotopes including thorium, actinium and/or radium. The resultant product is dissolved in solution and a selective precipitant is used to precipitate a bulk portion of the thorium. The precipitated thorium can be recovered. Chromatography is carried out on the remaining solution to remove residual thorium and to separate the actinium from the radium.