Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkaline earth metal
Patent
1994-03-18
1995-04-25
Niebling, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkaline earth metal
423164, 423165, 423178, 204 95, C01F 100
Patent
active
054096804
ABSTRACT:
A process for removing alkaline earth metal impurities (e.g. calcium and magnesium ions) from an aqueous alkali metal chlorate solution which includes adding sufficient alkali metal carbonate or hydroxide or both to the impure solution to raise the pH to above 9 and form alkaline earth metal precipitates which are then removed from the pH-adjusted solution (e.g. by microfiltration). This process can lower the level of these impurities from about 1-20 ppm to less than about 0.3 ppm or less.
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Cawlfield David W.
Kaczur Jerry J.
Watson Julian F.
Mee Brendan
Niebling John
Olin Corporation
Simons William A.
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