Process for preparing granular compound fertilizers showing stability in storage.

摘要

Granular compound fertilizers are prepared by mixing solid KCl with an NH4NO3-solution or -melt, and granulating the mixture, optionally together with other substances, wherein only part of the NH4NO3 is added to the mixing zone and the balance is supplied to the granulating zone. Compound fertilizers are obtained which in storage do not cake, do not show any decrease in crushing strength neither increased formation of dust.