| abstract |
The invention relates to a novel neutralization and granulation method. According to said method, a neutralizing foam which is obtained by mixing an anionic surfactant in its acid form with a solid neutralizing agent and then expanding the mixture is used as a granulation adjuvant. Said neutralizing foam preferably has an average pore size of less than 10 mm, more preferably less than 5 mm and especially less than 2 mm. |