专利检索 ap:("Russell Derrah" OR "Sayeeda Quadir" OR "Arthur R. Shirley, Jr." OR "Keith D. Cochran" OR "Terence B. Lynch" OR "Zdzislaw M. Tulimowski") AND inv:"Russell Derrah" 第 1 页

1.

发明授权
Apparatus and process for coating particles 失效

公开(公告)号：US5399186A

公开(公告)日：1995-03-21

申请号：US977102

申请日：1992-11-16

申请人： Russell Derrah , Sayeeda Quadir , Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Zdzislaw M. Tulimowski

发明人： Russell Derrah , Sayeeda Quadir , Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Zdzislaw M. Tulimowski

IPC分类号： B01J2/16 , B01J8/24 , B01J8/26 , B05C19/02 , C05C13/00 , C05G3/00 , C05G5/00 , B05D7/00

CPC分类号： B01J2/16 , B01J8/26 , C05G3/0029 , Y10S118/05

摘要： An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated. The apparatus and process provides a method to prepare coated particles having a narrow coating weight distribution, and thus allows for the economical production of a slow release fertilizer.