Production of high purity stable ferrate salts
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United States of America Patent
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Feb 19, 1985
Grant Date -
N/A
app pub date -
Jun 1, 1983
filing date -
Jun 1, 1983
priority date (Note) -
Expired
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Abstract
An improved process for producing stable, high purity alkali metal or alkaline earth metal ferrate salt products is disclosed. In this process, crude ferrate salts, after being precipitated and separated from a chilled mother liquor, are purified first with a chilled anhydrous, water miscible extraction solvent to remove residual process contaminants therefrom followed by chilled oxidation resistant rinse solvent step, miscible with said extractant, followed by a drying step so as to produce a stable, purified ferrate product which can be safely stored without special provisions. Both batch and continuous modes of operation are disclosed.
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