Particulate urea with finely divided inorganic material incorpor

Details Particulate urea with finely divided inorganic material incorpor Particulate urea with finely divided inorganic material incorpor

1997-02-20

1998-07-21

Langel, Wayne

Chemistry: fertilizers

Processes and products

Organic material-containing

71 29, 71 30, 71 6412, 71 6413, C05C 900

Patent

active

057829519

ABSTRACT:
A particulate urea product having improved hardness, nonfriable and anti-caking properties and which is useful for either direct application to the soil or as an intermediate product for the subsequent incorporation with other fertilizer materials into solid bulk blends. The product consists of an admixture of urea and a finely divided inorganic material selected from the group consisting of calcium oxide, calcium hydroxide, cement and fly ash and is in particulate form, some examples of which are granules or prills.

REFERENCES:
patent: 5676729 (1997-10-01), Elrod et al.
Haneda et al, AN 1990:6697, Manufacture of fertilizers . . . materials, Mar. 1987.
Zhou, AN 1996:113523, Multi-effect fly ash fertilizer . . . method, Dec. 1994.
Nagai et al, AN 1976:134543, Improvement of the efficacy . . . soil, 1974.
Vlnaty et al, AN 115:91265, Controlled elease fertilizers . . . nutrients, Nov. 1988.

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