Title:
塩化コバルト水溶液の精製方法
Document Type and Number:
Japanese Patent JP6728905
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for purifying cobalt chloride solution without cadmium remaining in a cobalt chloride solution after adsorption treatment when zinc and cadmium in the cobalt chloride solution is absorption removed by contacting a weak basic anion-exchange resin with the cobalt chloride solution.SOLUTION: When zinc and cadmium absorbed by a weak basic anion-exchange resin are removed and the weak basic anion-exchange resin is recycled, cadmium concentration in the cobalt chloride solution after absorption removal can be less than 0.1 mg/L by setting elution amount for eluting zinc and cadmium at 25 to 30 times of filled volume of the weak basic anion-exchange resin.SELECTED DRAWING: Figure 1
Inventors:
Fujiko Akiko
Amano road
Jiro Hayada
Amano road
Jiro Hayada
Application Number:
JP2016076010A
Publication Date:
July 22, 2020
Filing Date:
April 05, 2016
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C01G51/00; B01J49/07; C01G51/08; C02F1/42; C02F1/62; C02F1/64; C22B3/42; C22B3/44; C22B23/00
Domestic Patent References:
| JP2015203134A | ||||
| JP3054118A | ||||
| JP2008038236A |
Attorney, Agent or Firm:
Yamauchi Patent Office