Title:
【発明の名称】ニッケル―カドミウム廃材料からのカドミウムの回収方法
Document Type and Number:
Japanese Patent JP2805492
Kind Code:
B2
Abstract:
PURPOSE:To recover high purity Cd from a scrap material contg. Ni-Cd by an easy operation by immersing the scrap material in a soln. contg. ammonium sulfate to leach the Cd and by electrolyzing the soln. contg. the leached Cd to electrodeposit metallic Cd. CONSTITUTION:A scrap material contg. Ni-Cd such as the scrap electrode plate 1 of a storage battery is immersed in a soln. contg. ammonium sulfate or dilute sulfuric acid to nearly selectively leach the Cd from the material. The resulting soln. contg. the leached Cd is introduced into an electrolytic cell 6 fitted with a pair of anodes 4 and a cathode 5 without using a diaphragm and the soln. is electrolyzed as an electrolytic soln. to electrodeposit Cd on the cathode 5. High purity Cd is recovered without requiring an expensive reagent.
Inventors:
Yoshiyuki Makita
Soichiro Tanaka
Kuniyoshi Hori
Soichiro Tanaka
Kuniyoshi Hori
Application Number:
JP7429789A
Publication Date:
September 30, 1998
Filing Date:
March 27, 1989
Export Citation:
Assignee:
Kamioka Mining Co., Ltd.
International Classes:
C25C1/16; C22B7/00; C22B17/00; H01M10/54; (IPC1-7): C25C1/16; C22B7/00; C22B17/00; H01M10/54
Domestic Patent References:
| JP50101220A | ||||
| JP5099916A | ||||
| JP5199621A |
Attorney, Agent or Firm:
Hiroyuki Mori