| abstract |
The invention presented concerns processes for the granulation of salt mixtures containing potassium chloride and at least one magnesium sulphate hydrate, which have a potassium content, calculated as K20, of 35 to 50 Wt.% and a magnesium content, calculated as MgO, of 2 to 10 Wt.%, with reference to the granulate in each case. The process according to the invention includes the granulation of the salt mixture via press agglomeration, where water is added to the salt mixture before or during press agglomeration. The granulates obtained in this way are characterized by high mechanical stability, low dust-forming characteristics and good hygroscopic resistance. Furthermore, a high content of the entire magnesium content of the granulates is immediately available to the plant. |