Title:
【発明の名称】尿素と硫酸アンモニウムを含有する肥料粒剤の製造方法及び該粒剤
Document Type and Number:
Japanese Patent JPH0784355
Kind Code:
B2
Abstract:
The invention concerns a method of producing fertilizer granules containing urea and ammonium sulphate by granulating a mixture containing urea, ammonium sulphate and water, which is characterized in that the ammonium sulphate is completely dissolved in an aqueous urea solution with a urea concentration of 70-85% by weight, the resulting solution is thickened to a dry content of 92-97% by weight, with a crystallization retarder for the urea being added in any stage of the treatment, following which the thickened solution is granulated in a fluidized bed of urea and ammonium sulphate containing nuclei, as well as urea, ammonium sulphate and crystallization retarder containing granules.
Inventors:
Liyuk Albert Banmark
Walter Edmond Matilde Cardon
Walter Edmond Matilde Cardon
Application Number:
JP24429286A
Publication Date:
September 13, 1995
Filing Date:
October 16, 1986
Export Citation:
Assignee:
Nederlandse Stakestov Ma-Tosya Tspy Be-V
International Classes:
C05C3/00; C05C9/00; C05C13/00; C05G1/00; C05G3/00; (IPC1-7): C05C13/00; C05G3/00
Domestic Patent References:
| JP5849683A | ||||
| JP5849684A | ||||
| JP5416427A |
Attorney, Agent or Firm:
Heiyoshi Odashima
Next Patent: PHASE-SHIFTING MASK AND MANUFACTURE THEREOF