| 摘要 |
PROBLEM TO BE SOLVED: To provide a preparation method of granules.SOLUTION: A preparation method of granules comprises: a step of providing a granulation zone comprising particles which are kept in motion; a step of providing a first feed stream comprising a liquid composition into the granulation zone, the liquid composition being applied onto or over the moving particles in the granulation zone; and a step of withdrawing a product stream comprising granules which are the result of layered growth of the moving particles in the granulation zone from the granulation zone; in which a second feed stream comprising granulation nuclei is fed into the granulation zone, the granulation nuclei have a particle size distribution characterized by a standard deviation of the particle size that is less than 15% of the mean particle size, and the second feed stream comprises 0.05 to 50 mass% of the product stream. |
