Title:
廃触媒からの有価金属回収方法
Document Type and Number:
Japanese Patent JP5387851
Kind Code:
B2
Abstract:
A method for recovering high purity nickel, cobalt, molybdenum and vanadium from a waste catalyst in high yield by convenient means is provided. The method includes a step of heating a waste catalyst containing valuable metals in a non-oxidizing atmosphere, thereby deoiling an adhered oil content by thermal decomposition, a step of co-milling the deoiled waste catalyst and a chloride to form a chloride of nickel and/or cobalt, a step of water-leaching the co-milled waste catalyst to dissolve nickel and/or cobalt in water, a step of oxidizing leaching residue containing molybdenum and/or vanadium after water leaching to form an oxide or molybdenum and/or vanadium; and a step of subjecting the leaching residue containing the oxide of molybdenum and/or vanadium to alkali leaching to dissolve the molybdenum and/or vanadium in an alkali solution.
Inventors:
Takahiro Shiokawa
Hidetaka Sugibe
Fumiyoshi Saito
Junya Kano
Hidetaka Sugibe
Fumiyoshi Saito
Junya Kano
Application Number:
JP2009551074A
Publication Date:
January 15, 2014
Filing Date:
June 11, 2009
Export Citation:
Assignee:
JFE Mineral Co., Ltd.
Tohoku University
Tohoku University
International Classes:
C22B7/00; C22B3/04; C22B23/00; C22B34/22; C22B34/34
Domestic Patent References:
| JPH05156375A | 1993-06-22 | |||
| JP2004162141A | 2004-06-10 |
Attorney, Agent or Firm:
Kenichiro Ochiai
Eiichi Kobayashi
Eiichi Kobayashi
Previous Patent: JPS5387850
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