Sulfur-coated fertilizer granules and process of making same

Details Sulfur-coated fertilizer granules and process of making same Sulfur-coated fertilizer granules and process of making same

1987-08-11

1989-08-15

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 57, 71 6406, 71 6407, 71 6411, 71 6413, 428403, C05C 900, C05C 100, C05C 500

Patent

active

048570982

ABSTRACT:
Sulfur coated plant fertilizer granules, each such granule including a core granule of fertilizer having a crystalline component, a bonding layer having a mixture of the fertilizer granule crystalline component and crystalline sulfur, coating the granule, the bonding layer crystalline fertilizer component being integral with the fertilizer granule crystalline component at the bonding layer-granule interface, and an outer layer of sulfur having crystallized sulfur, the outer layer sulfur being integral with the bonding layer sulfur at the bonding layer-outer layer interface, the crystalline fertilizer component of the bonding layer and the sulfur of the bonding layer being interwoven, enabling the sulfur outer layer to be tightly bound to the fertilizer granule. A method for producing the granules includes the steps of applying molten fertilizer and molten sulfur, simultaneously, to the surface of the fertilizer granules such that the urea and sulfur solidify on the surface of said urea granules forming a layer including fertilizer and crystalline sulfur and then applying molten sulfur alone to the fertilizer-sulfur coated granules such that the sulfur solidifies as a second coating, forming an outer layer including crystalline sulfur, thus enabling the sulfur outer layer to be tightly bound to the fertilizer granules.

REFERENCES:
patent: T912014 (1973-07-01), Shirley, Jr. et al.
patent: 3100698 (1963-08-01), Horsley et al.
patent: 3295950 (1967-01-01), Blouin et al.
patent: 3576613 (1971-04-01), Fleming
patent: 3877415 (1975-04-01), Blouin
patent: 3903333 (1975-09-01), Shirley, Jr. et al.
patent: 3991225 (1976-11-01), Blouin
patent: 4219589 (1980-08-01), Niks et al.
patent: 4330319 (1982-05-01), Bexton et al.
patent: 4636242 (1987-01-01), Timmons

Affiliated with

Also associated with

Rating

Sulfur-coated fertilizer granules and process of making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sulfur-coated fertilizer granules and process of making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfur-coated fertilizer granules and process of making same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-119016