Title:
NEUTRALIZATION TREATMENT METHOD AND WET REFINING METHOD OF NICKEL OXIDE ORE
Document Type and Number:
Japanese Patent JP2019077928
Kind Code:
A
Abstract:
To provide a neutralization treatment method capable of reducing used amount of a neutralization agent during a neutralization process for neutralizing an exudate in a wet refining method of a nickel oxide ore, and the wet refining method of the nickel oxide ore.SOLUTION: There is provided a neutralization treatment method including: conducting an exudation treatment by acid on a nickel oxide ore to obtain an exudation slurry containing an exudate containing nickel and an exudation residue, then adding a neutralization agent to the exudate obtained by a solid liquid separation treatment on the exudation slurry and conducting a neutralization treatment to obtain a neutralized final liquid containing nickel and a neutralization deposit containing impurity elements, in which the neutralization agent is calcium carbonate and a calcium carbonate slurry with solid concentration of 270 kg/mto 350 kg/mis added to the exudate.SELECTED DRAWING: Figure 1
Inventors:
MIYAMOTO TAKASHI
AMANO MICHI
AMANO MICHI
Application Number:
JP2017206967A
Publication Date:
May 23, 2019
Filing Date:
October 26, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
C22B23/00; C22B3/06; C22B3/44
Domestic Patent References:
| JP2016222989A | 2016-12-28 | |||
| JP2005350766A | 2005-12-22 | |||
| JP2010037626A | 2010-02-18 |
Foreign References:
| WO2008003160A1 | 2008-01-10 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi