Method for granulating a melt of an hydrous nitrate mineral salt-based composition, system and use thereof

A method for granulating a melt of an hydrous nitrate mineral salt-based composition comprising from 15 to 30 weight % of water, the method comprising the steps of:

• a) granulating a melt of the nitrate mineral salt-based composition by a granulator operating according to the agglomeration granulation principle to obtain a set of granules;
• b) separating out oversized and undersized granules from the granules obtained from step a) to obtain at least a set of oversized granules, a set of undersized granules and a set of granules having a suitable size;
• c) crushing the oversized granules obtained from step b);
• d) recycling the granules obtained from step c) to the granulator;
• e) recycling the undersized granules obtained from step b) to the granulator;
• f) during step a) measuring a temperature in the granulator and
• g) based on the temperature measured in step f), adjusting the amounts of granules recycled in steps d) and/or e) to maintain the temperature measured in step f) within a certain range.