专利检索 ap:("United States Department of Energy") AND inv:"Circe Verba" 第 1 页

1.

发明授权
Organic acid solution having at least one ionic salt and at least one organic acid which is used for rare earth extraction 有权

公开(公告)号：US11814700B2

公开(公告)日：2023-11-14

申请号：US17955731

申请日：2022-09-29

申请人： United States Department of Energy

发明人： Circe Verba , Mark L. McKoy , Thomas J. Tarka , Scott Montross , Jonathan Yang

IPC分类号： C22B3/00 , C22B3/16 , C22B3/22 , C22B59/00

CPC分类号： C22B3/165 , C22B3/22 , C22B59/00

摘要： One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.

2.

发明申请
Process for Extraction of Recoverable Rare Earth Elements (REE) Using Organic Acids and Chelating Compounds 有权

公开(公告)号：US20230042346A1

公开(公告)日：2023-02-09

申请号：US17955731

申请日：2022-09-29

申请人： United States Department of Energy

发明人： Circe Verba , Mark L. McKoy , Thomas J. Tarka , Scott Montross , Jonathan Yang

IPC分类号： C22B3/16 , C22B3/22 , C22B59/00

摘要： One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.

3.

发明申请
Process for Extraction of Recoverable Rare Earth Elements (REE) Using Organic Acids and Chelating Compounds 有权

公开(公告)号：US20220074019A1

公开(公告)日：2022-03-10

申请号：US17012858

申请日：2020-09-04

申请人： United States Department of Energy

发明人： Circe Verba , Mark L. McKoy , Thomas J. Tarka , Scott Montross , Jonathan Yang

IPC分类号： C22B3/16 , C22B59/00 , C22B3/22

摘要： One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.