Sulphur-economizing ammonium phosphate-producing slurry process

Phosphate rock slurry or powder reacts with sulfuric acid to produce wet phophoric acid, which is then mixed with proper amount of additional phosphate rock slurry or powder and neutralized with ammonia gas to produce ammonium phosphate product. The said technological process utilizes the high order...

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Bibliographic Details
Main Author JIANKANG YING
Format Patent
LanguageEnglish
Published 01.10.1997
Edition6
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:Phosphate rock slurry or powder reacts with sulfuric acid to produce wet phophoric acid, which is then mixed with proper amount of additional phosphate rock slurry or powder and neutralized with ammonia gas to produce ammonium phosphate product. The said technological process utilizes the high order chemical energy in free sulfuric acid and partial chemical energy in phosphoric acid in decomposing phosphate rock into effective phosphorus so that it has its acid consumption lower than that of available ammonium phosphate producing slurry process. In addition, the said technological process hasless corrosion to equipment.
Bibliography:Application Number: CN1996117513