Title:
ニッケル酸化鉱石の湿式製錬方法
Document Type and Number:
Japanese Patent JP5572928
Kind Code:
B2
Abstract:
A hydrometallurgical process for a nickel oxide ore comprising obtaining an aqueous solution of crude nickel sulfate by high pressure acid leaching of a nickel oxide ore; obtaining a zinc free final solution by sulfurization of the solution; obtaining a waste solution; and scrubbing hydrogen sulfide gas from an exhaust gas. The process is characterized by at least one of the following operations: Adjusting the total volume (m3) of a sulfurization reactor to a ratio of 0.2-0.9 (m3/kg/h) relative to the input mass (kg/h) of the nickel to be introduced to the reactor; and/or subjecting the waste solution and the exhaust gas to countercurrent contact, then introducing the exhaust gas back to the scrubber and charging the waste solution from the scrubber into the sulfurization reactor.
Inventors:
Keisuke Shibayama
Ozaki 佳智
Nakai 修
Ozaki 佳智
Nakai 修
Application Number:
JP2008191698A
Publication Date:
August 20, 2014
Filing Date:
July 25, 2008
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B23/00; B01D19/00; B01D53/52; B01D53/77; C01G53/11; C02F1/62; C22B3/04; C22B3/44; C22B19/20
Attorney, Agent or Firm:
Kenji Kawabi