AQUEOUS SOLUTION CONTAINING DIVALENT IRON IONS - JX NIPPON MINING & METALS CORP

Title:

AQUEOUS SOLUTION CONTAINING DIVALENT IRON IONS

Document Type and Number:

WIPO Patent Application WO/2011/062030

Kind Code:

A1

Abstract:

The disclosed aqueous solution that contains divalent iron ions and that has improved storage stability can suppress the oxidation over time into trivalent iron ions of the divalent iron ions of a solution containing divalent iron ions and can prevent the generation of an iron (III) hydroxide precipitate over the long term. The aqueous solution that contains divalent iron ions and that has improved storage stability is characterized by containing divalent iron ions and a hydroxylamine salt as a reducing agent, and by having a pH of no greater than 3.0. The pH is preferably no greater than 2.2, and a pH of no greater than 1.2 is yet more preferable.

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Inventors:

MURAKAMI MASAOMI (JP)
SEKIGUCHI JUNNOSUKE (JP)

Application Number:

PCT/JP2010/068826

Publication Date:

May 26, 2011

Filing Date:

October 25, 2010

Export Citation:

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Assignee:

JX NIPPON MINING & METALS CORP (JP)
MURAKAMI MASAOMI (JP)
SEKIGUCHI JUNNOSUKE (JP)

International Classes:

C01G49/14; C25D3/56

Foreign References:

JP2005256045A	2005-09-22
JPS6241718A	1987-02-23
JPS6324091A	1988-02-01
JPS58156539A	1983-09-17

Attorney, Agent or Firm:

SAKAI, Masami et al. (JP)
Masami Sakai (JP)

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