公开(公告)号：US11834729B2

公开(公告)日：2023-12-05

申请号：US18060378

申请日：2022-11-30

Applicant: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences

Inventor： Jianxi Zhu ,  Hongping He ,  Gaofeng Wang ,  Yuanyuan Wang ,  Mingqi Sun ,  Liuqing He ,  Xiaoliang Liang ,  Jingming Wei ,  Qingze Chen ,  Runliang Zhu

IPC: C22B59/00 ,  C22B3/06 ,  C22B3/10 ,  C22B3/14 ,  C22B3/24 ,  C22B3/46 ,  C22B3/26

CPC classification number: C22B59/00 ,  C22B3/065 ,  C22B3/10 ,  C22B3/14 ,  C22B3/24 ,  C22B3/41 ,  C22B3/46

Abstract: A method for extracting rare earth elements (REEs) from a REE hyperaccumulator, including: subjecting the REE hyperaccumulator to microwave-assisted digestion to obtain a REE extract; subjecting the REE extract to absorption with a chelating resin and elution to obtain a purified REE solution; and subjecting the purified REE solution to precipitation and calcination to obtain high-purity rare earth compound.

公开(公告)号：US11840744B2

公开(公告)日：2023-12-12

申请号：US16908003

申请日：2020-06-22

Applicant: HYMO Corporation

Inventor： Ryuichi Ansai ,  Fumi Oono ,  Satoshi Sakuma ,  Fumiaki Satou ,  Akihiro Ishii ,  Yasuharu Mori

IPC: C22B11/00 ,  C22B3/24 ,  C22B3/26

CPC classification number: C22B11/04 ,  C22B3/24 ,  C22B3/41

Abstract: Provided are a method for recovering gold, in which gold is recovered from a solution containing a gold cyano complex using a crosslinked resin containing a vinyl amine unit, by which gold can be efficiently recovered from the solution not only in a case (A) where a concentration of the gold cyano complex in the solution is low but also in a case (B) where another metal is dissolved in the solution; a method for recovering gold, in which the crosslinked resin and the solution are brought into contact with each other to separate the crosslinked resin and the solution from each other, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B); and a gold recovery facility comprising: a container inside which the crosslinked resin is accommodated in a flowable manner; and a device which feeds the solution to the container, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B).

公开(公告)号：US12122884B2

公开(公告)日：2024-10-22

申请号：US15734386

申请日：2019-06-05

Applicant: COATEX

Inventor： Mehdi Bouzid ,  Christian Jacquemet ,  Benoit Magny ,  Jacques Mongoin

IPC: C08J3/05 ,  C08F2/22 ,  C08F220/06 ,  C08F220/18 ,  C22B3/26 ,  C22B3/40 ,  C22B15/00

CPC classification number: C08J3/05 ,  C08F2/22 ,  C08F220/06 ,  C08F220/1802 ,  C22B3/41 ,  C22B15/00

Abstract: A method for preparing an aqueous mineral suspension from an aqueous metal ore residue may include introducing into the aqueous metal ore residue a polymer (P) having a molecular mass Mw measured by GPC ranging from 2,000 to 20,000 g/mol. The polymer (P) may be prepared by radical polymerization of at least one anionic monomer (M). The suspension produced by such a method may have a Brookfield viscosity of which is lower than 1,800 mPa·s or a yield point of lower than 80 Pa.

公开(公告)号：US20230151456A1

公开(公告)日：2023-05-18

申请号：US18060378

申请日：2023-01-13

Applicant: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences

Inventor： Jianxi ZHU ,  Hongping HE ,  Gaofeng WANG ,  Yuanyuan WANG ,  Mingqi SUN ,  Liuqing HE ,  Xiaoliang LIANG ,  Jingming WEI ,  Qingze CHEN ,  Runliang ZHU

IPC: C22B59/00 ,  C22B3/26 ,  C22B3/06 ,  C22B3/10

CPC classification number: C22B59/00 ,  C22B3/41 ,  C22B3/065 ,  C22B3/10

Abstract: A method for extracting rare earth elements (REEs) from a REE hyperaccumulator, including: subjecting the REE hyperaccumulator to microwave-assisted digestion to obtain a REE extract; subjecting the REE extract to absorption with a chelating resin and elution to obtain a purified REE solution; and subjecting the purified REE solution to precipitation and calcination to obtain high-purity rare earth compound.