Mechanism Analysis of Agglomeration and Anti-agglomeration during Preparation of Nanosized Al_2O_3 Powders by Pyrolysis of NH_4AlO(OH)HCO_3

In the paper,the preparation of nanosized Al2O3 powders by pyrolysis of NH4AlO(OH)HCO3 is introduced.Based on the preparation process,we elaborat the mechanism of agglomeration,and the anti-agglomeration mechanism is discussed.In the end,some methods of anti-agglomeration are showed.