Minimizing soluble iron concentration in a plant effluent
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United States of America Patent
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Sep 9, 1980
Issued Date -
N/A
app pub date -
Dec 10, 1976
filing date -
Dec 10, 1976
priority date (Note) -
Expired
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Abstract
This process reduces the soluble iron found in the final effluent of a plant making iron oxide by the Penniman-Zoph scrap process. The finished oxide product slurry is separated from the scrap iron, and the slurry is aerated while the pH is maintained between about 3.0 and 5.0. As the soluble iron is converted to product oxide, the pH of the system rises toward the higher value.
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