Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR MANUFACTURING NICKEL AND COBALT MIXED SULFIDE AND NICKEL OXIDE ORE HYDROMETALLURGICAL METHOD
Document Type and Number:
WIPO Patent Application WO/2016/157629
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid-acidic solution containing nickel and cobalt and a high iron concentration as the sulfidation start solution. This method for manufacturing a nickel and cobalt mixed sulfide is a method for generating a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid-acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid-acidic solution, which is the sulfidation start solution, contains iron at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.

Inventors:
YONEYAMA TOMOAKI (JP)
MITSUI HIROYUKI (JP)
ENOMOTO MANABU (JP)
Application Number:
PCT/JP2015/084427
Publication Date:
October 06, 2016
Filing Date:
December 08, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B23/00; C22B3/44
Foreign References:
JP2010126778A2010-06-10
JP2005350766A2005-12-22
Other References:
See also references of EP 3279344A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
Download PDF: