Title:
亜鉛系溶融金属のトップドロス中の金属亜鉛回収方法
Document Type and Number:
Japanese Patent JP5849687
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of highly efficiently recovering metallic zinc present in the top dross of zinc-based molten metal at a high recovery rate without generating a harmful halogen or a harmful halide.SOLUTION: The method of recovering metallic zinc present in the top dross of zinc-based molten metal includes adding a hydroxide of alkali metal and/or alkaline earth metal and a peroxide of alkali metal and/or alkaline earth metal into the molten top dross of zinc-based molten metal, stirring the mixture, subsequently allowing the mixture to stand still, and removing a material floating on the surface of the molten top dross bath. Reduction reactions by (Al) contained in the top dross proceed, and metallic zinc of a high concentration can be recovered by allowing a generated material floating on the surface of the molten dross bath to stand still and to separate, and subsequently removing the same from the resultant metallic zinc.
Inventors:
Masaru Ito
Gentaro Takeda
Gentaro Takeda
Application Number:
JP2011282694A
Publication Date:
February 03, 2016
Filing Date:
December 26, 2011
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C22B19/30; C22B7/04; C22B9/02; C22B9/10
Domestic Patent References:
| JP48041906A | ||||
| JP2002146502A | ||||
| JP7173550A | ||||
| JP59123161U |
Foreign References:
| US3512959 |
Attorney, Agent or Firm:
Shigeru Inoue
Kazuhiro Mori
Kazuhiro Mori