リチウムの溶離方法 - Sumitomo Metal Mining Co., Ltd.

Title:

リチウムの溶離方法

Document Type and Number:

Japanese Patent JP7155696

Kind Code:

B2

Abstract:

To provide a method for always keeping lithium concentration after elution constant in an elution method of lithium adsorbed to an ion exchange resin from a manufacturing process wastewater including lithium of a positive electrode material for lithium secondary battery to the ion exchange resin.SOLUTION: There is provided an elution method of lithium including: conducting an adsorption process by connecting a part of a plurality of ion exchange resins in series, conducting an elution process by connecting a plurality of remaining ion exchange resins in series, connecting the ion exchange resins in the first step in the adsorption process to an end of the ion exchange resins in the elution process to move them to the elution process, connecting the ion exchange resins in the first step in the elution process to an end of the ion exchange resins in the adsorption process to move them to the adsorption process, conducting the adsorption process and the elution process on the plurality of ion exchange resins repeatedly, and conducting transition from the elution process to the adsorption process when water conduction in the adsorption process becomes 1.0 to 3.0 by BV (Bed volume) value.SELECTED DRAWING: Figure 4

Inventors:

Osamu Ikeda
Asano Satoshi
Masatoshi Takano
Shinya Matsumoto
Yohei Kudo

Application Number:

JP2018134817A

Publication Date:

October 19, 2022

Filing Date:

July 18, 2018

Export Citation:

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