Process for the precipitation of iron as jarosite
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United States of America Patent
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Mar 18, 1980
Grant Date -
N/A
app pub date -
Aug 14, 1978
filing date -
Aug 19, 1977
priority date (Note) -
Expired
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Abstract
A process for precipitation of iron as a jarosite compound from sulfate solution in which said solution fed sequentially through a plurality of reaction zones for oxidation and hydrolysis of ferrous sulfate in the presence of alkali-metal or ammonium ions for jarosite precipitation and simultaneous generation of sulfuric acid is subjected to a 'reverse temperature profile', i.e., higher temperature in the last reaction zone than in the first reaction zone, by injection of steam to the last reaction zone.
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