公开(公告)号：US20170022617A1

公开(公告)日：2017-01-26

申请号：US15119472

申请日：2015-02-24

Applicant: NEMASKA LITHIUM INC.

Inventor： Jean-François MAGNAN ,  Guy BOURASSA ,  Nicolas LAROCHE ,  Gary PEARSE ,  Stephen Charles MACKIE ,  Mykolas GLADKOVAS ,  Peter SYMONS ,  J. David GENDERS ,  Geneviève CLAYTON ,  Pierre BOUCHARD

IPC: C25B1/16 ,  B01D61/42 ,  C01D15/06 ,  C22B1/02 ,  C22B3/08 ,  C01D15/02 ,  B01D61/02 ,  B01D61/58

Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.

Abstract translation: 本发明涉及从含锂材料中提取锂的方法。 例如，该方法可以包括在适于获得包含诸如硫酸锂和/或硫酸氢锂的锂化合物的水性组合物的条件下浸出焙烧的含锂材料。 包含硫酸锂和/或硫酸氢锂的水性组合物可以任选地用于例如包含电解质工艺的制备氢氧化锂的方法中。 焙烧的含锂材料可以例如通过使用包含任选的硫酸锂和/或硫酸氢锂的水性组合物的方法来制备，所述水性组合物可以由制备氢氧化锂的方法获得，所述方法包括电化学方法如两室 单极或双极电解过程。