Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1987-04-13
1988-08-09
Lander, Ferris H.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 6408, 423545, C05C 900, C05C 300
Patent
active
047625465
ABSTRACT:
The present invention teaches novel compositions and techniques for economically producing highly concentrated nitrogen-sulfur suspension fertilizers using cheap and readily available by-product ammonium sulfate or by-product sulfuric acid and ammonia in conjunction with solid, liquid, or suspension nitrogen fertilizers and suspending clay. The products of the instant invention exhibit unique and very desirable physical properties and long-term storage characteristics not heretofore encountered in suspensions containing soluble fertilizer salts. Some of these unique characteristics include virtually no crystal growth during exceptionally long storage periods and near-constant or decreasing viscosity with decrease in temperature.
REFERENCES:
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patent: 2867523 (1959-01-01), Lutz et al.
patent: 3539329 (1970-11-01), Wilson
patent: 3785796 (1974-01-01), Mann, Jr.
patent: 3928015 (1975-12-01), Siegel et al.
patent: 4066432 (1978-01-01), Jones
patent: 4579580 (1986-04-01), Moore
patent: 4589904 (1986-05-01), Harrison et al.
patent: 4676821 (1987-06-01), Gullett et al.
Lander Ferris H.
Petrusek Robert A.
Tennessee Valley Authority
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