Purified solution containing iron and manganese, and method producing thereof
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United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
Oct 17, 1989
filing date -
Oct 17, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A purified solution containing iron chloride and manganese chloride, having a phosphorus content not higher than about 0.007 wt. % with respect to the total content of iron and manganese. The method for producing the purified solution comprises the steps of dissolving manganese containing raw material in hydrochloric solution; oxidizing the solution; adjusting the pH of the solution to 2.5.about.4.5 to form insolubles; and separating the insolubles from the solution. This solution can be utilized to produce a mixed powder of an iron oxide and a manganese oxide. The mixed powder is useful for producing a high-quality soft ferrite.
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