Title:
混合肥料造粒方法
Document Type and Number:
Japanese Patent JP4459326
Kind Code:
B2
Abstract:
There is disclosed a process to produce fertilizer granules containing urea and ammonium sulfate with a high ammonium sulfate concentration of <=60 wt. % in a fluidized bed granulator, which process comprises the steps of: a) a molten urea suspension consisting of ammonium sulfate having an average particle size of 30 to 300 mum and urea having a temperature range of 120 to 155° C. is produced, b) the molten urea suspension produced at the stage a) is then injected from below on the fine particles of urea/ammonium sulfate in a fluidized bed granulator by means of at least a nozzle, while the fluidized bed is loosened by a spouting air flow in the injection area, and subsequently, c) the fertilizer granules generated in the fluidized bed are separated and, if necessary, treated. Homogeneous urea/ammonium sulfate granules of an ammonium sulfate content between 30 and 60 wt. % can be produced this way without any problems, while the particle size of granules can be adjusted selectively and dust emissions by granulation can be reduced to a minimum.
Inventors:
Horst bendix
Heinz Lange
Claus shovel
Hans-Youahim Baksmus
Tetsuzo Honda
Eiji Sakata
Nishikawa Hikoshi
Heinz Lange
Claus shovel
Hans-Youahim Baksmus
Tetsuzo Honda
Eiji Sakata
Nishikawa Hikoshi
Application Number:
JP16748799A
Publication Date:
April 28, 2010
Filing Date:
June 14, 1999
Export Citation:
Assignee:
Toyo Engineering Corporation
Escar Wehstikstoff Berke Peace Teritz G.M.B.H.
Escar Wehstikstoff Berke Peace Teritz G.M.B.H.
International Classes:
B01J2/04; C05C13/00; C05C3/00; C05C9/00; C05G5/00
Domestic Patent References:
| JP58120587A | ||||
| JP63282183A |
Attorney, Agent or Firm:
Toshizo Iida