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Class Information
Number: 423/181
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Alkali metal (li, na, k, rb, or cs) > Ion exchanging or liquid-liquid extracting
Description: Processes which include the step of (1) attracting and retaining a component of the mixture by contact with an ion exchange substance or (2) selectively dissolving a component in one of two immiscible liquids to effect a separations; see Glossary.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8298502 Preparation method of lithium carbonate from lithium-ion secondary battery recovered material Oct. 30, 2012
8158088 Extractant compositions for co-extracting cesium and strontium, a method of separating cesium and strontium from an aqueous feed, and calixarene compounds Apr. 17, 2012
7981388 Process for the purification of lithium salts Jul. 19, 2011
7951311 Non-lead resistor composition May. 31, 2011
7927566 Extraction of radionuclides by crown ether-containing extractants Apr. 19, 2011
7648687 Method of purifying barium nitrate aqueous solution Jan. 19, 2010
7592284 Preparation of ion exchanged polymer bound nitrogen adsorbent Sep. 22, 2009
7524469 Extractant composition including crown ether and calixarene extractants Apr. 28, 2009
7494630 Method of stripping metals from organic solvents Feb. 24, 2009
7291316 Cesium and strontium extraction using a mixed extractant solvent including crown ether and calixarene extractants Nov. 6, 2007
7122164 Niobate-based octahedral molecular sieves Oct. 17, 2006
6986878 Method of producing potassium sulfate via cation exchange Jan. 17, 2006
6936175 Zirconium phosphate, hafnium phosphate and method of making same Aug. 30, 2005
6911188 Production of two alkali metal salts by a combined ion exchange and crystallization process Jun. 28, 2005
6777511 Process for producing poly (meth) acrylates having reduced metal content Aug. 17, 2004
6736958 Ion sensing method May. 18, 2004
6566561 Fluoro-alcohol phase modifiers and process for cesium solvent extraction May. 20, 2003
6517788 Method and device for separating caesium, strontium and transuranium elements contained in sodium waste Feb. 11, 2003
6296679 Method for hydrocarbon steam reforming Oct. 2, 2001
6280693 Composition for the recovery of lithium values from brine and process of making/using said composition Aug. 28, 2001
6274105 Process for producing high-purity potassium salts Aug. 14, 2001
6270737 Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste Aug. 7, 2001
6241893 Water filtration media, apparatus and processes Jun. 5, 2001
6207129 Lithiated manganese oxide Mar. 27, 2001
6174503 Calixarene crown ether solvent composition and use thereof for extraction of cesium from alkaline waste solutions Jan. 16, 2001
6156282 Crown calix[4]arenes, method of preparation and use for selective extraction of caesium Dec. 5, 2000
6120927 Method of recovering lithium from batteries Sep. 19, 2000
6110377 Process for recovering the sodium contained in industrial alkaline waste Aug. 29, 2000
6022992 Acid-salt metathetic process Feb. 8, 2000
5980717 Recovery process in a pulp mill Nov. 9, 1999
5942084 Process for the separation of sulphides from pulping liquors using amphoteric resins Aug. 24, 1999
5922171 Method and apparatus for removing sodium chloride from pulping chemicals using an amphoteric ion-exchange resin Jul. 13, 1999
5888398 Composition and process for separating cesium ions from an acidic aqueous solution also containing other ions Mar. 30, 1999
5750032 Removal of lithium from polymer cements May. 12, 1998
5698169 Methods and agents for the extraction of cesium and strontium from nuclear waste Dec. 16, 1997
5681477 Thermally-driven ion-exchange process for lithium recovery Oct. 28, 1997
5678242 Membrane extraction with thermodynamically unstable diphosphonic acid derivatives Oct. 14, 1997
5666641 Preparation and use of polymeric materials containing hydrophobic anions and plasticizers for separation of cesium and strontium Sep. 9, 1997
5666642 Extraction of cesium and strontium ions from nuclear waste Sep. 9, 1997
5607591 Bis-crown calix [4]arenes, their preparation process and their use for the selective extraction of cesium and actinides Mar. 4, 1997
5603074 Preparation and use of tetra-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents Feb. 11, 1997
5599516 Recovery of lithium values from brines Feb. 4, 1997
5547810 Image forming method with alkali precursor Aug. 20, 1996
5451383 Lithium recovery Sep. 19, 1995
5389349 Recovery of lithium values from brines Feb. 14, 1995
5332531 Extracting metal ions with diphosphonic acid, or derivative thereof Jul. 26, 1994
5277883 Recovery of metal values from aqueous solutions Jan. 11, 1994
H1227 Method for immobilizing mixed waste chloride salts containing radionuclides and other hazardous wastes Sep. 7, 1993
5110578 Continuous production of potassium nitrate via ion exchange May. 5, 1992
5098679 Purification of alkali metal hydrosulfite solutions Mar. 24, 1992

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