Title:
ORE SLURRY PRE-TREATMENT METHOD AND ORE SLURRY MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/136069
Kind Code:
A1
Abstract:
Provided is a wet smelting method for nickel oxide ore that is capable of effectively reducing the amount of sulfuric acid used in the leaching step and the amount of a neutralizer such as slaked lime used in the final neutralization step without reducing nickel yield. The present invention is a method for pre-treating an ore slurry to be submitted for leaching treatment in a wet smelting method for nickel oxide ore, the method comprising: a separating step for separating the ore slurry into a coarse particle fraction, in which particles having a particle diameter of less than 45 µm are 30 mass% of the solids or less, and a fine particle fraction, and feeding said fine particle fraction to the leaching process; and a vibration sieving step for separating the separated coarse particle fraction into oversize particles and undersize particles using vibration sieving and feeding the ore slurry of said undersize particles to the leaching process.
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Inventors:
HIGUCHI HIROTAKA (JP)
OHARA GO (JP)
NAKAI OSAMU (JP)
IMAMURA MASAKI (JP)
OHARA GO (JP)
NAKAI OSAMU (JP)
IMAMURA MASAKI (JP)
Application Number:
PCT/JP2015/083790
Publication Date:
September 01, 2016
Filing Date:
December 01, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B23/00; C22B1/00; C22B3/08
Domestic Patent References:
| WO2005116281A1 | 2005-12-08 |
Foreign References:
| JP2012107289A | 2012-06-07 | |||
| JP2010095788A | 2010-04-30 |
Other References:
See also references of EP 3252176A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
Right wood Masayuki (JP)
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