Sulfur-coated urea

Details Sulfur-coated urea Sulfur-coated urea

1986-12-12

1987-06-30

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 6407, 71 6412, 71 6413, 564 3, 564 32, 564 63, C05C 900

Patent

active

046768211

ABSTRACT:
The present invention teaches a technique and provides for apparatus eminently useful for reducing the amount of sulfur currently needed by industry to coat water-soluble fertilizer materials such as, for example, granular or prilled urea. A further advantage of and benefits derived from the practice of the instant invention relates to the production of sulfur-coated urea products which have substantially higher nitrogen values than do urea products produced by prior art processes.

REFERENCES:
patent: 4042366 (1977-08-01), Fersch et al.
patent: 4326875 (1982-04-01), Young
patent: 4330319 (1982-05-01), Bexton et al.
patent: 4587358 (1986-05-01), Blouin

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