Method for improving appearance quality of granules made from diammonium phosphate slurry

• Main Authors: YU SHIRUI, HUANG JIN, GUO YU, ZHAO JIANYONG, JIN XIANYU, XIE YAN, LUO HUANHU, LI YAN, YANG GUOHANG, YANG YI, ZENG XIANGQIN
• Format: Patent
• Language: Chinese; English
• Published: 08.10.2008
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; PHOSPHATIC FERTILISERS

Disclosed is a method for improving the appearance quality of a formed diammonium phosphate slurry particle, which relates to a fertilizer containing ammonium salts, the method uses surface active agents to change the gas-liquid interfacial tension and viscosity of slurry so as to improve the particle sphericity and homogeneity when in diammonium phosphate slurry granulation, thereby reaching the purpose of improving the product appearance quality of diammonium phosphate particles; the method has the detailed technical proposal that: proper surface active agents or combinations thereof are firstly selected, and the surface active agents or combinations thereof are then prepared into a saturation solution; and then the solution is pumped to the pipe-connecting part of a suction inlet of a slurry pump by a gear pump, and the slurry-spraying granulation can be implemented after the solution enters the slurry for mixing. Using the method of the invention and adding the surface active agents to the slurry can larg