公开(公告)号：US20240051837A1

公开(公告)日：2024-02-15

申请号：US18270791

申请日：2021-01-05

Applicant: SOCIEDAD QUIMICA Y MINERA DE CHILE S.A.

Inventor： Gabriel MERUANE ,  Pablo MELIPILLAN

IPC: C01D15/02 ,  C01D1/30 ,  C01D1/20 ,  B01D9/00

CPC classification number: C01D15/02 ,  C01D1/30 ,  C01D1/20 ,  B01D9/004 ,  B01D2009/0086 ,  C01P2006/40

Abstract: The present invention is directed to a method for the production of lithium hydroxide (LiOH) directly from lithium chloride (LiCl), without the need for an intermediate production of lithium carbonate or similar. Specifically, the invention teaches a method for producing lithium hydroxide directly from lithium chloride, wherein LiCl is converted to LiOH from a brine, the LiOH is then crystallised to obtain crude lithium hydroxide monohydrate (crude LiOH·H2O) and then undergoes a second crystallization to produce pure LiOH·H2O. Finally, it is dried and packaged.

公开(公告)号：US11708278B2

公开(公告)日：2023-07-25

申请号：US17658647

申请日：2022-04-08

Applicant: Lithium Ark Holding B.V.

Inventor： Peter Ehren

IPC: C01D1/20 ,  C01D15/02 ,  C01D15/08 ,  C01B7/01 ,  B01D9/00 ,  B01D21/00 ,  C25B1/46 ,  C25B15/08 ,  B01D21/26

CPC classification number: C01D1/20 ,  B01D9/0031 ,  B01D21/0012 ,  B01D21/262 ,  C01B7/012 ,  C01D15/02 ,  C01D15/08 ,  C25B1/46 ,  C25B15/081 ,  C25B15/083 ,  C01P2006/80

Abstract: Methods and systems for production of lithium hydroxide and lithium carbonate are described. One or more embodiments of the method include producing lithium hydroxide from potassium chloride, lithium chloride, and water. One or more embodiments of the method include producing lithium carbonate from potassium chloride, lithium chloride, water, and a carbon dioxide source. One or more embodiments of the method include producing lithium carbonate from sodium chloride, lithium chloride, water, and a carbon dioxide source.

公开(公告)号：US2862793A

公开(公告)日：1958-12-02

申请号：US62251856

申请日：1956-11-16

Applicant: COLUMBIA SOUTHERN CHEM CORP

Inventor： LAUER KARL H

IPC: C01D1/20

CPC classification number: C01D1/20

公开(公告)号：US1754207A

公开(公告)日：1930-04-08

申请号：US44924321

申请日：1921-03-02

Applicant: BRADLEY MCKEEFE CORP

Inventor： LINN BRADLEY ,  MCKEEFE EDWARD P

IPC: C01D1/20 ,  D21C11/04

CPC classification number: C01D1/20 ,  D21C11/04 ,  Y10S423/03

公开(公告)号：US1680540A

公开(公告)日：1928-08-14

申请号：US19987327

申请日：1927-06-18

Applicant: ERIK HAGGLUND

Inventor： ERIK HAGGLUND

IPC: C01D1/20 ,  D21C11/00

CPC classification number: D21C11/0007 ,  C01D1/20 ,  Y10S423/03

公开(公告)号：US1452185A

公开(公告)日：1923-04-17

申请号：US44991221

申请日：1921-03-05

Applicant: AMERICAN POTASH CORP

Inventor： CHARLTON HARRY W ,  NORRIS SHREVE RANDOLPH

IPC: C01D1/20

CPC classification number: C01D1/20

公开(公告)号：US1342148A

公开(公告)日：1920-06-01

申请号：US22937618

申请日：1918-04-18

Applicant: PATENT CORP LTD

Inventor： JOHN ARMSTRONG

IPC: B65D81/26 ,  C01D1/20

CPC classification number: B65D81/266 ,  C01D1/20

公开(公告)号：US10822241B2

公开(公告)日：2020-11-03

申请号：US16311560

申请日：2018-03-22

Applicant: Joint Stock Company “Rosenergoatom” ,  JOINT STOCK COMPANY “SCIENCE AND INNOVATIONS”

Inventor： Vladimir Ivanovich Ivanenko ,  Tat'yana Andreevna Sedneva ,  Efroim Pinkhusovich Lokshin ,  Roman Ivanovich Korneikov

IPC: B01D61/44 ,  C01B35/10 ,  C01D1/20 ,  G21F9/12

Abstract: The invention relates to the complex processing of a nuclear power plant's NPP's liquid, boron-containing waste with a complex composition, being generated during the operation of NPPs, including of ones VVER-type, and can be used to isolate boric and nitric acids and hydroxides of sodium and potassium for their reuse in the NPP process cycle. The invention allows to obtain crystalline boric acid and highly concentrated solutions of nitric acid and hydroxides of sodium and potassium, suitable for reuse in the NPP process cycle and for general industrial use. Conducting electrodialysis at low values of current and voltage provides a reduction of the method's energy intensity. The involvement of all major components of waste mother liquors into the processing reduces the amount of stored and disposed hazardous waste.

公开(公告)号：US4451439A

公开(公告)日：1984-05-29

申请号：US324060

申请日：1981-11-23

Applicant: Pierre Maurel ,  Bernard Bosca ,  Francois Nicolas

Inventor： Pierre Maurel ,  Bernard Bosca ,  Francois Nicolas

IPC: C01D1/20 ,  C01D1/28 ,  C01D1/32 ,  C01D7/00 ,  C01D7/07 ,  C01F7/47 ,  C22B34/22 ,  C22B34/34 ,  C22B60/02 ,  C01G39/06 ,  C01D5/00 ,  C01F11/18

CPC classification number: C01D1/20 ,  C01D1/28 ,  C01D1/32 ,  C01D7/00 ,  C01D7/07 ,  C01F7/473 ,  C22B34/22 ,  C22B34/34 ,  C22B60/0247 ,  C22B60/0278

Abstract: A process for the purification of solutions containing sodium or potassium carbonate, sulphate, hydroxide or hydrogen carbonate, and mainly at least one of the metals belonging to the group formed by vanadium, uranium or molybdenum, in the form of sodium or potassium salts, and inorganic and/or organic impurities, wherein the above-mentioned solutions are completely or partially caustified by the addition of an adequate amount of lime, whereby a first precipitate essentially containing calcium carbonate is separated, and the separated liquor is concentrated by evaporation until the hydroxide content is at most equal to 50%, to cause the production of a second precipitate which essentially comprises sodium or potassium sulphate, then, after separation thereof, a hydroxide-rich liquor is collected.This process is more particularly adapted for treatments of liquors resulting from the alkaline attach of vanadiferous and uraniferous ores.

Abstract translation: 用于纯化含有碳酸钠或碳酸钾，硫酸盐，氢氧化物或碳酸氢盐的溶液的方法，以及主要是属于由钒或铀或钼形成的钒，铀或钼形成的基团中的至少一种金属，其为钠盐或钾盐， 无机和/或有机杂质，其中通过加入足够量的石灰将上述溶液完全或部分地除去，由此分离出基本上含有碳酸钙的第一沉淀物，通过蒸发浓缩分离的液体直到氢氧化物 含量最多等于50％，导致产生基本上包含硫酸钠或硫酸钾的第二沉淀物，然后在分离之后，收集富含氢氧化物的液体。 该方法更特别适用于由含钒和含铀矿石的碱性附着产生的液体的处理。

公开(公告)号：US4085191A

公开(公告)日：1978-04-18

申请号：US791005

申请日：1977-04-26

Applicant: Peter G. Mein ,  Horst R. Adolf

Inventor： Peter G. Mein ,  Horst R. Adolf

IPC: C01D1/20 ,  C01G45/12 ,  C01D1/04

CPC classification number: C01G45/1214

Abstract: Potassium is recovered as a dilute KOH solution from residue solids resulting from conversion of manganese ore to K.sub.2 MnO.sub.4 by reacting the solids with a Ca(OH).sub.2 under specified conditions. The resulting KOH solution can be returned to the K.sub.2 MnO.sub.4 plant and the solids of reduced potassium content are suitable for disposal in a landfill.

Abstract translation: 从指定条件下通过使固体与Ca（OH）2反应使锰矿石转化成K2MnO4的残留固体，将钾作为稀释的KOH溶液回收。 所得到的KOH溶液可以返回到K2MnO4装置，并且减少的钾含量的固体适合在垃圾填埋场中处理。