Method for recovering indium from indium-containing material

Details Method for recovering indium from indium-containing material Method for recovering indium from indium-containing material

2007-09-25

2009-10-20

Mayes, Melvin C (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

Reexamination Certificate

active

07604786

ABSTRACT:
The present invention provides a recovery method in which the indium sponge that is deposited by substitution in the substitution deposition step in the recovery of indium from an indium-containing material is produced in the form of a powder rather than in a bulky form. This recovery method is a method in which an indium sponge is deposited by substitution by adding a substance containing chlorine, and further adding a reducing agent, to an indium-containing solution whose pH has been adjusted to a value in the range of 1 to 2.2.

REFERENCES:
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patent: A-2001-348632 (2001-12-01), None
M.A. Barakat, “Recovery of lead, tin and indium from alloy wire scrap,” Hydrometallurgy, Jun. 1998, 63-73, vol. 49, No. 1-2.
P. Halsall, “Indium-extraction from lead, zinc and tin circuits,” Trans Inst Min Metall, Jun. 1988, vol. 97, C93-C101.

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