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公开(公告)号：US20240327949A1
公开(公告)日：2024-10-03
申请号：US18130234
申请日：2023-04-03
发明人： Greg Lindberg , Kimberly C. Conner
IPC分类号： C22B21/02 , B22D21/00 , C22B1/24 , C22B3/06 , C22B3/22 , C22B5/02 , C22B34/12 , C22B59/00 , C25C3/06 , F03G4/00 , F24T10/10 , F24V50/00
CPC分类号： C22B21/02 , B22D21/007 , C22B1/24 , C22B3/06 , C22B3/22 , C22B5/02 , C22B34/124 , C22B59/00 , C25C3/06 , F03G4/00 , F24T10/10 , F24V50/00
摘要： A geothermally powered aluminum production subsystem includes a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A hopper receives a bauxite ore that is crushed and provided to a digestor. The digestor is heated by a heat transfer fluid heated by the geothermal system, and a product of the digestor is used to prepare aluminum.
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2.发明公开公开(公告)号：US20240279768A1
公开(公告)日：2024-08-22
申请号：US18600497
申请日：2024-03-08
发明人： Paul ZIEMKIEWICZ , Aaron NOBLE , Chris VASS
摘要： In one aspect, the disclosure relates to a continuous process for treating acid mine drainage while simultaneously recovering a high-grade rare earth preconcentrate suitable for extraction of commercially valuable rare earth oxides. In a further aspect, the preconcentrate is from about 0.1% to 5% rare earth elements on a dry weight basis. In another aspect, the disclosure relates to a method for processing the preconcentrate to generate a pregnant leach solution that does not form gels or emulsions and is suitable for processing via solvent extraction. In another aspect, the disclosure relates to a system and plant for carrying out the disclosed process. In still another aspect, the disclosure relates to a composition containing rare earth elements produced by the process disclosed herein. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
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公开(公告)号：US20240271247A1
公开(公告)日：2024-08-15
申请号：US18407664
申请日：2024-01-09
发明人： Nien-Hwa Linda Wang , Hoon Choi , David Harvey
IPC分类号： C22B7/00 , C01B33/14 , C01B33/26 , C01B33/32 , C01D13/00 , C01F7/0693 , C01F11/02 , C01F11/24 , C01F17/271 , C01G49/02 , C01G49/06 , C01G49/10 , C22B3/06 , C22B3/08 , C22B3/10 , C22B3/42 , C22B3/44 , C22B7/02 , C22B21/00 , C22B59/00
CPC分类号： C22B7/007 , C01B33/14 , C01B33/26 , C01B33/32 , C01F7/0693 , C01F11/02 , C01F11/24 , C01F17/271 , C01G49/02 , C01G49/06 , C01G49/10 , C22B3/065 , C22B3/08 , C22B3/10 , C22B3/42 , C22B3/44 , C22B7/02 , C22B21/0023 , C22B59/00 , C01D13/00
摘要： A process disclosed herein is related to the isolation and purification of substantially pure chemicals, including silica gel, sodium silicate, aluminum silicate, iron oxide, and rare earth elements (or rare earth metals, REEs), from massive industrial waste coal ash. In one embodiment, the process includes a plurality of caustic extractions of coal ash at an elevated temperature, followed by an acidic treatment to dissolve aluminum silicate and REEs. The dissolved aluminum silicate is precipitated out by pH adjustment as a solid product while REEs remain in the solution. REEs are captured and enriched using an ion exchange column. Alternatively, the solution containing aluminum silicate and REEs is heated to produce silica gel, which is easily separated from the enriched REEs solution. REEs are then isolated and purified from the enriched solution to afford substantially pure individual REE by a ligand-assisted chromatography. Additionally, a simplified process using one caustic extraction and one acidic extraction with an ion exchange process was also investigated and optimized to afford a comparable efficiency.
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公开(公告)号：US20240270612A1
公开(公告)日：2024-08-15
申请号：US18567344
申请日：2022-06-07
IPC分类号： C02F1/54 , B01D9/00 , C02F1/52 , C02F101/10 , C02F103/16 , C22B3/00 , C22B3/02 , C22B7/00 , C22B26/20 , C22B59/00
CPC分类号： C02F1/54 , B01D9/0036 , B01D9/004 , B01D9/0059 , C22B3/02 , C22B7/006 , C22B23/0461 , C22B26/20 , C22B59/00 , B01D2009/0086 , C02F2001/5218 , C02F2101/10 , C02F2103/16
摘要： A method of removing one or more of solutes from an aqueous solution comprises introducing, into a first fractional crystallization chamber, dimethyl ether and a salt containing solution comprising one or more dissolved salts to form an aqueous solution, and precipitating a first solid from the aqueous solution. Related systems and additional methods are also described.
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公开(公告)号：US20240229188A9
公开(公告)日：2024-07-11
申请号：US18547434
申请日：2022-02-18
申请人： Cornell University
发明人： Buz BARSTOW , Alexa SCHMITZ , Brooke PIAN , Sean MEDIN
CPC分类号： C22B3/18 , C12N1/205 , C12N9/001 , C12N9/0026 , C12N15/74 , C12Y103/03011 , C12Y105/08004 , C22B59/00 , C12R2001/01
摘要： Provided are modified bacteria for use in bioleaching rare earth elements (REEs). The modified bacteria contain at least one engineered genetic change that is correlated with improved bioleaching of the REEs, relative to REE bioleaching by unmodified bacteria of the same species as the modified bacteria. Also provided is a method for extracting REEs by contacting a composition containing REEs with biolixiviant produced by the modified bacteria. Kits that include containers that hold the modified bacteria are also provided.
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公开(公告)号：US12024756B2
公开(公告)日：2024-07-02
申请号：US17252023
申请日：2019-06-14
发明人： Peter Nockemann , Donnacha Brolly , Ena Bradley , Eadaoin McCourt
IPC分类号： C22B59/00 , C07D233/61 , C07F9/54 , C22B3/38
CPC分类号： C22B59/00 , C07D233/61 , C07F9/5407 , C22B3/38
摘要： A method for extracting a rare earth metal from a mixture of one or more rare earth metals, said method comprising countercurrently contacting an acidic solution of the rare earth metal with a composition which comprises an ionic liquid to form an aqueous phase and a non-aqueous phase into which the rare earth metal has been selectively extracted.
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7.发明公开公开(公告)号：US20240076195A1
公开(公告)日：2024-03-07
申请号：US18501352
申请日：2023-11-03
发明人： Mostafa Khodakarami , Lana Alagha
IPC分类号： C01F17/17 , C07C211/63 , C07C229/12 , C07C235/06 , C22B3/28 , C22B59/00
CPC分类号： C01F17/17 , C07C211/63 , C07C229/12 , C07C235/06 , C22B3/288 , C22B59/00
摘要： The present disclosure is directed to novel functionalized ionic liquids (ILs) that are used, for example, for enhanced recovery and separation of rare earth elements from aqueous solutions. The liquids and processes disclosed herein lead to greater separation efficiency, increased stability of separation materials, increased selectivity, and a reduced amount of waste materials.
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8.发明公开公开(公告)号：US20240035118A1
公开(公告)日：2024-02-01
申请号：US17873898
申请日：2022-07-26
发明人： Eric Van Abel , Tim Vaughan , Charles Shackett , Zach Childs , Shawn Underhill , Matthew Szymski , Kenny Kearney
CPC分类号： C22B59/00 , B01D1/0023
摘要： A phase change crucible that includes an inner chamber comprising an inner chamber wall extending from an inner chamber floor to an inner chamber upper end, an outer chamber comprising an outer chamber wall extending from an outer chamber floor to an outer chamber upper end, wherein the inner chamber upper end terminates beyond the outer chamber upper end and the outer chamber wall encircles the inner chamber wall, an inner collection region formed by the inner chamber wall and the inner chamber floor, and an outer collection region formed by the outer chamber wall, the inner chamber wall, and the outer chamber floor.
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公开(公告)号：US20230365422A1
公开(公告)日：2023-11-16
申请号：US18225207
申请日：2023-07-24
IPC分类号： C01D15/08 , C22B7/00 , C22B26/12 , C22B59/00 , C01F17/247
CPC分类号： C01D15/08 , C22B7/006 , C22B26/12 , C22B59/00 , C01F17/247
摘要： Embodiments relate to methods for generating selected materials from a natural brine. A natural brine comprising at least a portion of a selected material is heated. CO2 is added and mixes with the natural brine forming a mixture such that the CO2/P is a first predetermined value. The mixture is held so that impurities in the natural brine precipitate as solids leaving a second brine substantially comprising the selected material. The second brine is heated. CO2 gas is injected into the second brine, mixing so that the CO2/P is a second predetermined value. The mixture is held so that the selected material precipitates out and are removed.
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公开(公告)号：US11814700B2
公开(公告)日：2023-11-14
申请号：US17955731
申请日：2022-09-29
发明人： Circe Verba , Mark L. McKoy , Thomas J. Tarka , Scott Montross , Jonathan Yang
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.
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