Phosphate rock utilization
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Apr 3, 1987
filing date -
Apr 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process providing solubilization of phosphate rock by contacting the rock with sulfurous acid in the presence of an oxidizing agent selected from the group consisting of hydrogen peroxide and ozone. Use of sulfurous acid in combination with a substoichiometric amount of hydrogen peroxide significantly enhances the solubilization of phosphate rock.
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