Process for upgrading raw phosphate ore

Details Process for upgrading raw phosphate ore Process for upgrading raw phosphate ore

2005-07-26

2005-07-26

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C423S323000

Reexamination Certificate

active

06921520

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.

REFERENCES:
patent: 4919906 (1990-04-01), Barber

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