Title:
FILTRATION METHOD OF WASTE WATER, FILTRATION MACHINE, MANUFACTURING METHOD OF FERRONICKEL, AND MANUFACTURING FACILITY OF FERRONICKEL
Document Type and Number:
Japanese Patent JP2023100574
Kind Code:
A
Abstract:
To reduce concentration of suspended substances in waste water discharged in a process of a wet process, and prevent a recovery rate of nickel from lowering by preventing loss of nickel contained in the suspended substances, in a dry-type smelting method for manufacturing ferronickel.SOLUTION: In a dry-type smelting method for manufacturing ferronickel by sequentially performing a drying step S1, a firing step S2 and a melting reduction step S3, a filtration method of waste water includes using ferronickel slag as a filter medium 44, separated and removed from ferronickel metal in the melting reduction step S3, in the filtration method of waste water containing suspended substances separated and recovered by wet process from an exhaust gas generated in the drying step S1 and/or the firing step S2 and containing dust derived from raw material ore 11.SELECTED DRAWING: Figure 1
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Inventors:
SUZUKI KOKI
ENDO SHUJI
ENDO SHUJI
Application Number:
JP2022131482A
Publication Date:
July 19, 2023
Filing Date:
August 22, 2022
Export Citation:
Assignee:
HYUGA SMELTING
International Classes:
C22B23/02; C22B1/02; C22B23/00; C22C33/04; F27D17/00
Attorney, Agent or Firm:
Masayuki Shobayashi
Kazuyoshi Hayashi
Kazuyoshi Hayashi
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