Keith D. Cochran;Joseph M. Miller;Gregory S. Peeden;Taylor Pursell;Arthur R. Shirley, Jr.;Timothy G. Holt
发明人:
Taylor Pursell,Arthur R. Shirley, Jr.,Keith D. Cochran,Joseph M. Miller,Timothy G. Holt,Gregory S. Peeden
申请号：
US13071286
公开号：
US08758474B2
申请日:
2011.03.24
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A urea fertilizer having reduced ammonia volatilization upon application to soil including a central particle having an outer surface and comprising ammonia volatilization inhibiting compounds containing one or more of boron and iodine, and a coating of urea on the outer surface of the central particle, and further a process of making the fertilizer including the steps of: granulating ammonia volatilization inhibiting compounds containing one or more of boron and iodine, with a binder to produce volatilization inhibitor particles； screening the inhibitor particles to a preselected particle size； spraying melted urea onto the surface of the inhibitor particles to produce a coating on the inhibitor particles； granulating the coated inhibitor particles with sprayed melted urea to produce granules of urea coated central volatilization particles； and cooling the granules.
