Method for separating nickel from lithium, and application thereof
AssigneeSuzhou Botree Cycling Sci & Tech Co., Ltd
InventorXue Wang
Life of this patent
Estimating the term…
Abstract
The present application provides a method for separating nickel from lithium, comprising: (1) performing a saponification reaction on an extraction reagent and an alkaline compound to obtain a saponified extraction agent, wherein the extraction reagent comprises a specific carboxylic acid compound; (2) performing extraction and layering on a nickel-lithium feed liquid by using the saponified extraction agent obtained at step (1), so as to obtain a loaded organic phase and a raffinate water phase; and (3) using a back extraction agent to perform back extraction on the loaded organic phase obtained at step (2), so as to obtain a metal ion enrichment solution and a regenerated organic phase.
Claims9
A method for separating nickel and lithium, comprising:
- (1) subjecting an extractant and an alkaline compound to saponification reaction to obtain a saponified extractant;
- the extractant comprising a carboxylic acid compound selected from any one or a combination of at least two of the following compounds:
- (2) subjecting a nickel-lithium feed solution to extraction by using the saponified extractant obtained from step (1), and performing layer separation to obtain a loaded organic phase and a raffinate aqueous phase, the raffinate aqueous phase comprising lithium ions;
- and
- (3) subjecting the loaded organic phase obtained from step (2) to back extraction with a back extractant to obtain a metal ion enriched solution and a regenerated organic phase, the metal ion enriched solution comprising nickel ions.
Dependencies are inferred from the claim text.