Selective precipitation of metal sulfides

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal

Reexamination Certificate

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C423S043000, C423S146000, C210S601000

Reexamination Certificate

active

07862786

ABSTRACT:
A method for recovering zinc ions by selective zinc sulfide precipitation from an aqueous solution comprising zinc ions and metal ions of a metal that precipitates as a metal sulfide at a pH lower than a pH at which zinc ions precipitate as a zinc sulfide.

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