Pastillation of ammonium sulfate nitrate

Details Pastillation of ammonium sulfate nitrate Pastillation of ammonium sulfate nitrate

2011-07-26

2011-07-26

Hendrickson, Stuart (Department: 1736)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

C071S059000, C264S003500, C264S013000, C423S397000

Reexamination Certificate

active

07985393

ABSTRACT:
A process is presented for the production of ammonium sulfate nitrate. The process provides for producing a highly uniform product and having a substantially uniform size. The process includes reacting ammonium sulfate and ammonium nitrate to form an FASN slurry melt. The slurry melt is continuously stirred and heated to keep the slurry melt under a shear thinned condition and at a uniform temperature until the slurry melt is extruded, cooled and solidified.

REFERENCES:
patent: 4623307 (1986-11-01), Froeschke
patent: 5772721 (1998-06-01), Kazemzadeh
patent: 6689181 (2004-02-01), Highsmith et al.
patent: 2004/0156935 (2004-08-01), Lumley et al.
Sandvik “New Performance Standards in Premium Pastillation” Aug. 2007,pp. 1-16.

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