Sulfur coating of urea containing gelling clays

Details Sulfur coating of urea containing gelling clays Sulfur coating of urea containing gelling clays

1988-10-28

1992-08-04

Lovering, Richard D.

Chemistry: fertilizers

Processes and products

Organic material-containing

C05C 900

Patent

active

H00010855

ABSTRACT:
The present invention teaches a technique and provides for apparatus eminently useful for reducing the amount of sulfur currently needed by industry to sulfur coat water-soluble fertilizer materials such as, for example, granular or prilled urea. A further advantage of and benefit 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: 4676821 (1987-06-01), Gullett et al.
patent: 4885021 (1989-12-01), Elrod

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