Title:
パラジウムおよびスズの分離回収方法
Document Type and Number:
Japanese Patent JP6538617
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of easily, selectively and efficiently separating and recovering palladium and tin from acidic aqueous solution containing palladium, tin and compounds thereof.SOLUTION: The invention relates to a method of separating and recovering palladium and tin from an acidic aqueous solution containing palladium, tin and compounds thereof, including following steps (1) to (3). (1) a step of adjusting pH of the acidic aqueous solution containing palladium, tin and compounds thereof to 3 or more. (2) a step of adding alkali and at least one of a reductant and metal scavenger to the solution at pH of 3 or more obtained in the step (1) to adjust pH to 6 to 10 and forming a palladium-containing precipitate and a tin-containing precipitate. (3) a step of performing solid-liquid separation on the palladium-containing precipitate and the tin-containing precipitate obtained in the step (2) and recovering them.SELECTED DRAWING: Figure 2
Inventors:
Hiroyasu Sato
Takanori Kimura
Watanabe Jun
Sawada Matsunori
Takanori Kimura
Watanabe Jun
Sawada Matsunori
Application Number:
JP2016125276A
Publication Date:
July 03, 2019
Filing Date:
June 24, 2016
Export Citation:
Assignee:
Tanaka Kikinzoku Kogyo Co., Ltd.
International Classes:
C22B11/00; C02F1/44; C02F1/62; C02F1/70; C22B3/22; C22B3/44; C22B25/00
Domestic Patent References:
| JP5888124A | ||||
| JP63297527A | ||||
| JP4318131A | ||||
| JP8238489A | ||||
| JP2001032025A | ||||
| JP2009102722A | ||||
| JP60500944A | ||||
| JP2010502436A |
Foreign References:
| US4600699 |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Yuta Terashima
Shingo Kitamura
Mitsutsugu Sugimura
Yuta Terashima
Shingo Kitamura