Stable ferric arsenate precipitation from acid copper...

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group va metal or arsenic

Reexamination Certificate

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C075S010330, C075S744000, C117S937000

Reexamination Certificate

active

10088511

ABSTRACT:
A method of which includes the steps of introducing an acidic solution containing (V), copper, ferric iron and ferrous iron into a first tank of a series of continuously stirred tank reactors and, in the first tank, adding air to the solution; heating the solution to an elevated temperature; recycling a portion of selectively precipitated ferric arsenate compounds to the said first tank; and seeding the solution with ferric arsenate compounds.

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patent: 2000-219920 (2000-08-01), None

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