Apparatus for purifying lithium
Patent 4842254 Issued on June 27, 1989. Estimated Expiration Date: 
December 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDistillation and sublimation apparatus comprising a condenser Metal distillation method utilizing double vaporization Patent #: 4695319 InventorAssigneeApplicationNo. 07/133882 filed on 12/16/1987US Classes:266/88, In a fluid266/149, Within evacuated chamber266/234, Induction stirring266/94By means sensing level of molten liquidExaminersPrimary: Andrews, MelvynAttorney, Agent or FirmInternational ClassesC22B 9/00 (20060101)C22B 9/04 (20060101) C22B 26/00 (20060101) C22B 26/12 (20060101) Foreign Application Priority Data1985-04-24 FRAbstractThe invention relates to an apparatus for purifying lithium, formed by a sealed enclosure comprising a heated upper portion 1 provided with a container 9 in which the molten lithium 11 is agitated and from which the impurities evaporate, and a cooled lower portion 13 provided with a condensation surface 17 and a pipe means 16 for producing a depression in the lower portion. The invention is used in the purification of lithium, and in particular, for separation of lithium from sodium and potassium impurities. | |
