Quality control in production of suspensions from solid ammonium phosphates (monoammonium phosphate and diammonium phosphate). [Monoammonium phosphate; diammonium phosphate]
Suspensions of good quality can be produced from MAP and DAP. Suspension quality depends on the amount of impurities in the ammonium phosphate solids used. Tests have shown that adding ammonium fluoride helps lower viscosity of suspensions containing a considerable amount of impurities. Also, adding polyphosphates (such as 10-34-0, 9-32-0, and 11-37-0) as a source of part of the P/sub 2/O/sub 5/ (6 to 15% polyphosphate in the product) helps to produce a suspension that has excellent storage characteristics. When the polyphosphate content of the product (11-33-0 suspension) is between 10 and 15% it usually will not solidify during cold weather storage. Freight and production costs of granular ammonium phosphates are relatively low compared to other sources of P/sub 2/O/sub 5/ for the fluid fertilizer market; therefore, using MAP and DAP to produce suspensions is expected to continue to grow in popularity. 2 refs., 7 figs., 1 tab.
- Research Organization:
- Tennessee Valley Authority, Muscle Shoals, AL (USA). Div. of Agricultural Development
- OSTI ID:
- 6014472
- Report Number(s):
- TVA/PUB-86/18; CONF-8212108-1; ON: DE86901140
- Resource Relation:
- Conference: NFSA convention, Atlanta, GA, USA, 6 Dec 1982; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIUM PHOSPHATES
CRYSTALLIZATION
PRODUCTION
VISCOSITY
FERTILIZERS
ALUMINIUM OXIDES
AMMONIUM FLUORIDES
FREEZING
IMPURITIES
IRON OXIDES
QUALITY CONTROL
STORAGE
SUSPENSIONS
ALUMINIUM COMPOUNDS
AMMONIUM COMPOUNDS
CHALCOGENIDES
CONTROL
DISPERSIONS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties