Process for upgrading raw phosphate ore
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United States of America Patent
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Jul 26, 2005
Grant Date -
Apr 8, 2004
app pub date -
Oct 7, 2002
filing date -
Oct 7, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is a process for upgrading feedstock prepared from raw phosphate ore. Phosphorus sludge is burned to produce impure phosphoric acid and the acid is combined with beneficiated phosphate ore to prepare anhydrous monocalcium phosphate. Feedstock prepared from raw phosphate ore is blended with anhydrous monocalcium phosphate to upgrade the feedstock.
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