Process for preparing granular compound fertilizers having a high potassium content.

摘要

Granular compound fertilizers having a high potassium content are prepared by mixing solid KCl with an NH4NO3-solution or melt, and granulating the mixture, optionally together with other substances, wherein technical-grade KCl is used and only part hereof 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.