Method for precipitating iron from a zinc sulphate solution...

Details Method for precipitating iron from a zinc sulphate solution... Method for precipitating iron from a zinc sulphate solution...

2007-11-13

2007-11-13

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

C423S138000, C423S142000, C423S544000, C423S633000

Reexamination Certificate

active

10497821

ABSTRACT:
This invention relates to a method for the removal of iron as hematite from a zinc sulphate solution in atmospheric conditions during the electrolytic preparation of zinc. According to the method, the pH of the iron-containing solution is adjusted to a value of at least 2.7, oxygen-containing gas is fed into the solution and part of the hematite thus formed is recirculated to the precipitation stage.

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patent: WO 02/50319 (2002-06-01), None
Monterey zinc sulfate solution 12% Material Safety Data Sheet, Issue date Mar. 2006.

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